added Phantom model support

README.md

@@ -10,7 +10,9 @@
 
 
 ## 🔥 Latest News!!
-* April 25 2025: 👋 Wan 2.1GP v4.3: Added preview mode and support for Sky Reels v2 Diffusion Forcing for high quality "infinite length videos" (see Window Sliding section below) 
+* April 27 2025: 👋 Wan 2.1GP v4.4: Phantom model support, very good model to transfer people or objects into video, works quite well at 720p and with the number of steps > 30
+* April 25 2025: 👋 Wan 2.1GP v4.3: Added preview mode and support for Sky Reels v2 Diffusion Forcing for high quality "infinite length videos" (see Window Sliding section below).Note that Skyreel uses causal attention that is only supported by Sdpa attention so even if chose an other type of attention, some of the processes will use Sdpa attention. 
+
 * April 18 2025: 👋 Wan 2.1GP v4.2: FLF2V model support, official support from Wan for image2video start and end frames specialized for 720p.  
 * April 17 2025: 👋 Wan 2.1GP v4.1: Recam Master model support, view a video from a different angle. The video to process must be at least 81 frames long and you should set at least 15 steps denoising to get good results.
 * April 13 2025: 👋 Wan 2.1GP v4.0: lots of goodies for you !

wan/diffusion_forcing.py

@@ -31,6 +31,8 @@ class DTT2V:
         text_encoder_filename = None,
         quantizeTransformer = False,
         dtype = torch.bfloat16,
+        VAE_dtype = torch.float32,
+        mixed_precision_transformer = False,
     ):
         self.device = torch.device(f"cuda")
         self.config = config
@@ -50,24 +52,22 @@ class DTT2V:
         self.vae_stride = config.vae_stride
         self.patch_size = config.patch_size 
 
-        
         self.vae = WanVAE(
-            vae_pth=os.path.join(checkpoint_dir, config.vae_checkpoint),
+            vae_pth=os.path.join(checkpoint_dir, config.vae_checkpoint), dtype= VAE_dtype,
             device=self.device)
 
         logging.info(f"Creating WanModel from {model_filename}")
         from mmgp import offload
         # model_filename = "model.safetensors"
-        self.model = offload.fast_load_transformers_model(model_filename, modelClass=WanModel,do_quantize= quantizeTransformer, writable_tensors= False) #, forcedConfigPath="config.json"
+        self.model = offload.fast_load_transformers_model(model_filename, modelClass=WanModel,do_quantize= quantizeTransformer, writable_tensors= False) #, forcedConfigPath="config.json")
         # offload.load_model_data(self.model, "recam.ckpt")
         # self.model.cpu()
-        if self.dtype == torch.float16 and not "fp16" in model_filename:
-            self.model.to(self.dtype) 
-        # offload.save_model(self.model, "rt1.3B.safetensors", config_file_path="config.json") 
-        # offload.save_model(self.model, "rtint8.safetensors", do_quantize= "config.json") 
+        self.model.lock_layers_dtypes(torch.float32 if mixed_precision_transformer else dtype, True)
+        offload.change_dtype(self.model, dtype, True)
+        # offload.save_model(self.model, "sky_reels2_diffusion_forcing_1.3B_mbf16.safetensors", config_file_path="config.json") 
+        # offload.save_model(self.model, "sky_reels2_diffusion_forcing_720p_14B_quanto_xbf16_int8.safetensors", do_quantize= True, config_file_path="config.json") 
         # offload.save_model(self.model, "rtfp16_int8.safetensors", do_quantize= "config.json") 
-        if self.dtype == torch.float16:
-            self.vae.model.to(self.dtype)
+
         self.model.eval().requires_grad_(False)
 
         self.scheduler = FlowUniPCMultistepScheduler()
@@ -228,11 +228,16 @@ class DTT2V:
         latent_height = height // 8
         latent_width = width // 8
 
-        prompt_embeds = self.text_encoder([prompt], self.device)
-        prompt_embeds  = [u.to(self.dtype).to(self.device) for u in prompt_embeds]
+        if self._interrupt:
+            return None
+        prompt_embeds = self.text_encoder([prompt], self.device)[0]
+        prompt_embeds  = prompt_embeds.to(self.dtype).to(self.device)
         if self.do_classifier_free_guidance:
-            negative_prompt_embeds = self.text_encoder([negative_prompt], self.device)
-            negative_prompt_embeds  = [u.to(self.dtype).to(self.device) for u in negative_prompt_embeds]
+            negative_prompt_embeds = self.text_encoder([negative_prompt], self.device)[0]
+            negative_prompt_embeds  = negative_prompt_embeds.to(self.dtype).to(self.device)
+
+        if self._interrupt:
+            return None
 
         self.scheduler.set_timesteps(num_inference_steps, device=self.device, shift=shift)
         init_timesteps = self.scheduler.timesteps
@@ -305,6 +310,17 @@ class DTT2V:
             del time_steps_comb
         from mmgp import offload
         freqs = get_rotary_pos_embed(latents[0].shape[1 :], enable_RIFLEx= False) 
+        kwrags = {
+            "freqs" :freqs,
+            "fps" : fps_embeds,
+            "causal_block_size" : causal_block_size,
+            "causal_attention" : causal_attention,
+            "callback" : callback,
+            "pipeline" : self,
+        }   
+        kwrags.update(i2v_extra_kwrags)
+
+
         for i, timestep_i in enumerate(tqdm(step_matrix)):
             offload.set_step_no_for_lora(self.model, i)
             update_mask_i = step_update_mask[i]
@@ -323,52 +339,45 @@ class DTT2V:
                     * noise_factor
                 )
                 timestep[:, valid_interval_start:predix_video_latent_length] = timestep_for_noised_condition
-            kwrags = {
+            kwrags.update({
                 "x" : torch.stack([latent_model_input[0]]),
                 "t" : timestep,
-                "freqs" :freqs,
-                "fps" : fps_embeds,
-                "causal_block_size" : causal_block_size,
-                "causal_attention" : causal_attention,
-                "callback" : callback,
-                "pipeline" : self,
                 "current_step" : i,                 
-            }   
-            kwrags.update(i2v_extra_kwrags)
-                
-            if not self.do_classifier_free_guidance:
-                noise_pred = self.model(
-                    context=prompt_embeds,
-                    **kwrags,
-                )[0]
-                if self._interrupt:
-                    return None
-                noise_pred= noise_pred.to(torch.float32)                                                                  
-            else:
-                if joint_pass:
-                    noise_pred_cond, noise_pred_uncond = self.model(
-                        context=prompt_embeds,
-                        context2=negative_prompt_embeds,
+                })
+
+            # with torch.autocast(device_type="cuda"):                
+            if True:
+                if not self.do_classifier_free_guidance:
+                    noise_pred = self.model(
+                        context=[prompt_embeds],
                         **kwrags,
-                    )
-                    if self._interrupt:
-                        return None                
-                else:
-                    noise_pred_cond = self.model(
-                        context=prompt_embeds,
-                        **kwrags,
-                    )[0]
-                    if self._interrupt:
-                        return None                
-                    noise_pred_uncond = self.model(
-                        context=negative_prompt_embeds,
                     )[0]
                     if self._interrupt:
                         return None
-                noise_pred_cond= noise_pred_cond.to(torch.float32)                                          
-                noise_pred_uncond= noise_pred_uncond.to(torch.float32)                                          
-                noise_pred = noise_pred_uncond + guidance_scale * (noise_pred_cond - noise_pred_uncond)
-                del noise_pred_cond, noise_pred_uncond
+                    noise_pred= noise_pred.to(torch.float32)                                                                  
+                else:
+                    if joint_pass:
+                        noise_pred_cond, noise_pred_uncond = self.model(
+                            context= [prompt_embeds, negative_prompt_embeds],
+                            **kwrags,
+                        )
+                        if self._interrupt:
+                            return None                
+                    else:
+                        noise_pred_cond = self.model(
+                            context=[prompt_embeds],
+                            **kwrags,
+                        )[0]
+                        if self._interrupt:
+                            return None                
+                        noise_pred_uncond = self.model(
+                            context=[negative_prompt_embeds],
+                            **kwrags,
+                        )[0]
+                        if self._interrupt:
+                            return None
+                    noise_pred = noise_pred_uncond + guidance_scale * (noise_pred_cond - noise_pred_uncond)
+                    del noise_pred_cond, noise_pred_uncond
             for idx in range(valid_interval_start, valid_interval_end):
                 if update_mask_i[idx].item():
                     latents[0][:, idx] = sample_schedulers[idx].step(

wan/image2video.py

@@ -48,47 +48,17 @@ class WanI2V:
         self,
         config,
         checkpoint_dir,
-        rank=0,
-        t5_fsdp=False,
-        dit_fsdp=False,
-        use_usp=False,
-        t5_cpu=False,
-        init_on_cpu=True,
-        i2v720p= True,
         model_filename ="",
         text_encoder_filename="",
         quantizeTransformer = False,
-        dtype = torch.bfloat16
+        dtype = torch.bfloat16,
+        VAE_dtype = torch.float32,
+        mixed_precision_transformer = False
     ):
-        r"""
-        Initializes the image-to-video generation model components.
-
-        Args:
-            config (EasyDict):
-                Object containing model parameters initialized from config.py
-            checkpoint_dir (`str`):
-                Path to directory containing model checkpoints
-            device_id (`int`,  *optional*, defaults to 0):
-                Id of target GPU device
-            rank (`int`,  *optional*, defaults to 0):
-                Process rank for distributed training
-            t5_fsdp (`bool`, *optional*, defaults to False):
-                Enable FSDP sharding for T5 model
-            dit_fsdp (`bool`, *optional*, defaults to False):
-                Enable FSDP sharding for DiT model
-            use_usp (`bool`, *optional*, defaults to False):
-                Enable distribution strategy of USP.
-            t5_cpu (`bool`, *optional*, defaults to False):
-                Whether to place T5 model on CPU. Only works without t5_fsdp.
-                Enable initializing Transformer Model on CPU. Only works without FSDP or USP.
-            init_on_cpu (`bool`, *optional*, defaults to True):
-        """
         self.device = torch.device(f"cuda")
         self.config = config
-        self.rank = rank
-        self.use_usp = use_usp
-        self.t5_cpu = t5_cpu
         self.dtype = dtype
+        self.VAE_dtype = VAE_dtype
         self.num_train_timesteps = config.num_train_timesteps
         self.param_dtype = config.param_dtype
         # shard_fn = partial(shard_model, device_id=device_id)
@@ -104,7 +74,7 @@ class WanI2V:
         self.vae_stride = config.vae_stride
         self.patch_size = config.patch_size
         self.vae = WanVAE(
-            vae_pth=os.path.join(checkpoint_dir, config.vae_checkpoint),
+            vae_pth=os.path.join(checkpoint_dir, config.vae_checkpoint), dtype = VAE_dtype,
             device=self.device)
 
         self.clip = CLIPModel(
@@ -118,11 +88,9 @@ class WanI2V:
         from mmgp import offload
 
         self.model = offload.fast_load_transformers_model(model_filename, modelClass=WanModel,do_quantize= quantizeTransformer, writable_tensors= False)
-        if self.dtype == torch.float16 and not "fp16" in model_filename:
-            self.model.to(self.dtype) 
+        self.model.lock_layers_dtypes(torch.float32 if mixed_precision_transformer else dtype, True)
+        offload.change_dtype(self.model, dtype, True)
         # offload.save_model(self.model, "i2v_720p_fp16.safetensors",do_quantize=True)
-        if self.dtype == torch.float16:
-            self.vae.model.to(self.dtype)
 
         # offload.save_model(self.model, "wan2.1_Fun_InP_1.3B_bf16_bis.safetensors")
         self.model.eval().requires_grad_(False)
@@ -142,7 +110,6 @@ class WanI2V:
         guide_scale=5.0,
         n_prompt="",
         seed=-1,
-        offload_model=True,
         callback = None,
         enable_RIFLEx = False,
         VAE_tile_size= 0,
@@ -212,13 +179,13 @@ class WanI2V:
         w = lat_w * self.vae_stride[2]
 
         clip_image_size = self.clip.model.image_size
-        img_interpolated = resize_lanczos(img, h, w).sub_(0.5).div_(0.5).unsqueeze(0).transpose(0,1).to(self.device, self.dtype)
+        img_interpolated = resize_lanczos(img, h, w).sub_(0.5).div_(0.5).unsqueeze(0).transpose(0,1).to(self.device) #, self.dtype
         img = resize_lanczos(img, clip_image_size, clip_image_size)
-        img = img.sub_(0.5).div_(0.5).to(self.device, self.dtype)
+        img = img.sub_(0.5).div_(0.5).to(self.device) #, self.dtype
         if img2!= None:
-            img_interpolated2 = resize_lanczos(img2, h, w).sub_(0.5).div_(0.5).unsqueeze(0).transpose(0,1).to(self.device, self.dtype)
+            img_interpolated2 = resize_lanczos(img2, h, w).sub_(0.5).div_(0.5).unsqueeze(0).transpose(0,1).to(self.device) #, self.dtype
             img2 = resize_lanczos(img2, clip_image_size, clip_image_size)
-            img2 = img2.sub_(0.5).div_(0.5).to(self.device, self.dtype)
+            img2 = img2.sub_(0.5).div_(0.5).to(self.device) #, self.dtype
 
         max_seq_len = lat_frames * lat_h * lat_w // ( self.patch_size[1] * self.patch_size[2])
 
@@ -244,25 +211,19 @@ class WanI2V:
         if n_prompt == "":
             n_prompt = self.sample_neg_prompt
 
-        # preprocess
-        if not self.t5_cpu:
-            # self.text_encoder.model.to(self.device)
-            context = self.text_encoder([input_prompt], self.device)
-            context_null = self.text_encoder([n_prompt], self.device)
-            if offload_model:
-                self.text_encoder.model.cpu()
-        else:
-            context = self.text_encoder([input_prompt], torch.device('cpu'))
-            context_null = self.text_encoder([n_prompt], torch.device('cpu'))
-            context = [t.to(self.device) for t in context]
-            context_null = [t.to(self.device) for t in context_null]
+        if self._interrupt:
+            return None
 
-        context  = [u.to(self.dtype) for u in context]
-        context_null  = [u.to(self.dtype) for u in context_null]
+        # preprocess
+        context = self.text_encoder([input_prompt], self.device)[0]
+        context_null = self.text_encoder([n_prompt], self.device)[0]
+        context  = context.to(self.dtype)
+        context_null  = context_null.to(self.dtype)
+
+        if self._interrupt:
+            return None
 
         clip_context = self.clip.visual([img[:, None, :, :]])
-        if offload_model:
-            self.clip.model.cpu()
 
         from mmgp import offload
         offload.last_offload_obj.unload_all()
@@ -270,23 +231,20 @@ class WanI2V:
             mean2 = 0
             enc= torch.concat([
                     img_interpolated,
-                    torch.full( (3, frame_num-2,  h, w), mean2, device=self.device, dtype= self.dtype),
+                    torch.full( (3, frame_num-2,  h, w), mean2, device=self.device, dtype= self.VAE_dtype),
                     img_interpolated2,
             ], dim=1).to(self.device)
         else:
             enc= torch.concat([
                     img_interpolated,
-                    torch.zeros(3, frame_num-1, h, w, device=self.device, dtype= self.dtype)
+                    torch.zeros(3, frame_num-1, h, w, device=self.device, dtype= self.VAE_dtype)
             ], dim=1).to(self.device)
+        img, img2, img_interpolated, img_interpolated2 = None, None, None, None
 
         lat_y = self.vae.encode([enc], VAE_tile_size, any_end_frame= any_end_frame and add_frames_for_end_image)[0]
         y = torch.concat([msk, lat_y])
+        lat_y = None
 
-        @contextmanager
-        def noop_no_sync():
-            yield
-
-        no_sync = getattr(self.model, 'no_sync', noop_no_sync)
 
         # evaluation mode
 
@@ -317,7 +275,7 @@ class WanI2V:
         freqs = get_rotary_pos_embed(latent.shape[1:],  enable_RIFLEx= enable_RIFLEx) 
 
         arg_c = {
-            'context': [context[0]],
+            'context': [context],
             'clip_fea': clip_context,
             'y': [y],
             'freqs' : freqs,
@@ -326,7 +284,7 @@ class WanI2V:
         }
 
         arg_null = {
-            'context': context_null,
+            'context': [context_null],
             'clip_fea': clip_context,
             'y': [y],
             'freqs' : freqs,
@@ -335,8 +293,7 @@ class WanI2V:
         }
 
         arg_both= {
-            'context': [context[0]],
-            'context2': context_null,
+            'context': [context, context_null],
             'clip_fea': clip_context,
             'y': [y],
             'freqs' : freqs,
@@ -344,9 +301,6 @@ class WanI2V:
             'callback' : callback
         }
 
-        if offload_model:
-            torch.cuda.empty_cache()
-
         if self.model.enable_teacache:
             self.model.compute_teacache_threshold(self.model.teacache_start_step, timesteps, self.model.teacache_multiplier)
 
@@ -379,8 +333,6 @@ class WanI2V:
                 )[0]
                 if self._interrupt:
                     return None                
-                if offload_model:
-                    torch.cuda.empty_cache()
                 noise_pred_uncond = self.model(
                     latent_model_input,
                     t=timestep,
@@ -392,8 +344,7 @@ class WanI2V:
                 if self._interrupt:
                     return None                
             del latent_model_input
-            if offload_model:
-                torch.cuda.empty_cache()
+
             # CFG Zero *. Thanks to https://github.com/WeichenFan/CFG-Zero-star/
             noise_pred_text = noise_pred_cond
             if cfg_star_switch:
@@ -412,9 +363,6 @@ class WanI2V:
 
             del noise_pred_uncond
 
-            latent = latent.to(
-                torch.device('cpu') if offload_model else self.device)
-
             temp_x0 = sample_scheduler.step(
                 noise_pred.unsqueeze(0),
                 t,
@@ -429,29 +377,18 @@ class WanI2V:
                 callback(i, latent, False) 
 
 
-        x0 = [latent.to(self.device, dtype=self.dtype)]
+        # x0 = [latent.to(self.device, dtype=self.dtype)]
 
-        if offload_model:
-            self.model.cpu()
-            torch.cuda.empty_cache()
+        x0 = [latent]
 
-        if self.rank == 0:
-            # x0 = [lat_y]
-            video = self.vae.decode(x0, VAE_tile_size, any_end_frame= any_end_frame and add_frames_for_end_image)[0]
+        # x0 = [lat_y]
+        video = self.vae.decode(x0, VAE_tile_size, any_end_frame= any_end_frame and add_frames_for_end_image)[0]
 
-            if any_end_frame and add_frames_for_end_image:
-                # video[:,  -1:] = img_interpolated2
-                video = video[:,  :-1]  
-
-        else:
-            video = None
+        if any_end_frame and add_frames_for_end_image:
+            # video[:,  -1:] = img_interpolated2
+            video = video[:,  :-1]  
 
         del noise, latent
         del sample_scheduler
-        if offload_model:
-            gc.collect()
-            torch.cuda.synchronize()
-        if dist.is_initialized():
-            dist.barrier()
 
         return video

wan/modules/model.py

@@ -408,6 +408,9 @@ class WanAttentionBlock(nn.Module):
             freqs(Tensor): Rope freqs, shape [1024, C / num_heads / 2]
         """
         hint = None
+        attention_dtype =  self.self_attn.q.weight.dtype 
+        dtype = x.dtype
+
         if self.block_id is not None and hints is not None:
             kwargs = { 
                 "grid_sizes" : grid_sizes,
@@ -434,9 +437,11 @@ class WanAttentionBlock(nn.Module):
             cam_emb = rearrange(cam_emb, 'b f h w d -> b (f h w) d')
             x_mod += cam_emb
 
-        xlist = [x_mod]
+        xlist = [x_mod.to(attention_dtype)]
         del x_mod
         y = self.self_attn( xlist, grid_sizes, freqs, block_mask)
+        y = y.to(dtype)
+
         if cam_emb != None: 
             y = self.projector(y)
 
@@ -445,15 +450,18 @@ class WanAttentionBlock(nn.Module):
         x, y = reshape_latent(x , 1), reshape_latent(y , 1)
         del y
         y = self.norm3(x)
+        y = y.to(attention_dtype)
         ylist= [y]
         del y
-        x += self.cross_attn(ylist, context)
+        x += self.cross_attn(ylist, context).to(dtype)
+
         y = self.norm2(x)
 
         y = reshape_latent(y , latent_frames)
         y *= 1 + e[4]
         y += e[3]
         y = reshape_latent(y , 1)
+        y = y.to(attention_dtype)
 
         ffn = self.ffn[0]
         gelu = self.ffn[1]
@@ -469,7 +477,7 @@ class WanAttentionBlock(nn.Module):
             y_chunk[...] = ffn2(mlp_chunk)
             del mlp_chunk 
         y = y.view(y_shape)
-
+        y = y.to(dtype)
         x, y = reshape_latent(x , latent_frames), reshape_latent(y , latent_frames)
         x.addcmul_(y, e[5])
         x, y = reshape_latent(x , 1), reshape_latent(y , 1)
@@ -532,7 +540,6 @@ class Head(nn.Module):
         out_dim = math.prod(patch_size) * out_dim
         self.norm = WanLayerNorm(dim, eps)
         self.head = nn.Linear(dim, out_dim)
-
         # modulation
         self.modulation = nn.Parameter(torch.randn(1, 2, dim) / dim**0.5)
 
@@ -552,6 +559,7 @@ class Head(nn.Module):
         x *= (1 + e[1])
         x += e[0]
         x = reshape_latent(x , 1)
+        x= x.to(self.head.weight.dtype)
         x = self.head(x)
         return x
 
@@ -735,6 +743,44 @@ class WanModel(ModelMixin, ConfigMixin):
                 block.projector.bias = nn.Parameter(torch.zeros(dim))            
 
 
+    def lock_layers_dtypes(self,  dtype = torch.float32, force = False):
+        count = 0
+        layer_list = [self.head, self.head.head, self.patch_embedding, self.time_embedding, self.time_embedding[0], self.time_embedding[2], 
+                      self.time_projection, self.time_projection[1]] #, self.text_embedding, self.text_embedding[0], self.text_embedding[2] ]
+        if hasattr(self, "fps_embedding"):
+            layer_list += [self.fps_embedding, self.fps_projection, self.fps_projection[0], self.fps_projection[2]]
+
+        if hasattr(self, "vace_patch_embedding"):
+            layer_list += [self.vace_patch_embedding]
+            layer_list += [self.vace_blocks[0].before_proj]
+            for block in self.vace_blocks:
+                layer_list += [block.after_proj, block.norm3]
+
+        # cam master
+        if hasattr(self.blocks[0], "projector"):
+            for block in self.blocks:
+                layer_list += [block.projector]
+
+        for block in self.blocks:
+            layer_list += [block.norm3]
+        for layer in layer_list:
+            if hasattr(layer, "weight"):
+                if layer.weight.dtype == dtype  :
+                    count += 1
+                elif force:
+                    if hasattr(layer, "weight"):
+                        layer.weight.data = layer.weight.data.to(dtype)
+                    if hasattr(layer, "bias"):
+                        layer.bias.data = layer.bias.data.to(dtype)
+                    count += 1
+
+            layer._lock_dtype = dtype 
+
+
+        if count > 0:
+            self._lock_dtype = dtype
+
+
     def compute_teacache_threshold(self, start_step, timesteps = None, speed_factor =0): 
         rescale_func = np.poly1d(self.coefficients)         
         e_list = []
@@ -788,7 +834,6 @@ class WanModel(ModelMixin, ConfigMixin):
         freqs = None,
         pipeline = None,
         current_step = 0,
-        context2 = None,
         is_uncond=False,
         max_steps = 0, 
         slg_layers=None,
@@ -797,7 +842,10 @@ class WanModel(ModelMixin, ConfigMixin):
         fps = None,
         causal_block_size = 1,
         causal_attention = False,
+        x_neg = None
     ):
+        # dtype =  self.blocks[0].self_attn.q.weight.dtype 
+        dtype =  self.patch_embedding.weight.dtype
 
         if self.model_type == 'i2v':
             assert clip_fea is not None and y is not None
@@ -810,9 +858,9 @@ class WanModel(ModelMixin, ConfigMixin):
             x = [torch.cat([u, v], dim=0) for u, v in zip(x, y)]
 
         # embeddings
-        x = [self.patch_embedding(u.unsqueeze(0)) for u in x] 
-        # grid_sizes = torch.stack(
-        #     [torch.tensor(u.shape[2:], dtype=torch.long) for u in x])
+        x = [self.patch_embedding(u.unsqueeze(0)).to(dtype) for u in x] 
+        if x_neg !=None:
+            x_neg = [self.patch_embedding(u.unsqueeze(0)).to(dtype) for u in x_neg] 
 
         grid_sizes = [ list(u.shape[2:]) for u in x]
         embed_sizes = grid_sizes[0]
@@ -836,57 +884,46 @@ class WanModel(ModelMixin, ConfigMixin):
 
         x = [u.flatten(2).transpose(1, 2) for u in x]
         x = x[0]
+        if x_neg !=None:
+            x_neg = [u.flatten(2).transpose(1, 2) for u in x_neg]
+            x_neg = x_neg[0]
 
         if t.dim() == 2:
             b, f = t.shape
             _flag_df = True
         else:
             _flag_df = False
-        
         e = self.time_embedding(
-            sinusoidal_embedding_1d(self.freq_dim, t.flatten()).to(self.patch_embedding.weight.dtype)
+            sinusoidal_embedding_1d(self.freq_dim, t.flatten()).to(dtype)  # self.patch_embedding.weight.dtype)
         )  # b, dim        
         e0 = self.time_projection(e).unflatten(1, (6, self.dim)).to(e.dtype)
 
         if self.inject_sample_info:
             fps = torch.tensor(fps, dtype=torch.long, device=device)
 
-            fps_emb = self.fps_embedding(fps).float()
+            fps_emb = self.fps_embedding(fps).to(dtype) # float()
             if _flag_df:
                 e0 = e0 + self.fps_projection(fps_emb).unflatten(1, (6, self.dim)).repeat(t.shape[1], 1, 1)
             else:
                 e0 = e0 + self.fps_projection(fps_emb).unflatten(1, (6, self.dim))
 
         # context
-        context = self.text_embedding(
-            torch.stack([
-                torch.cat(
-                    [u, u.new_zeros(self.text_len - u.size(0), u.size(1))])
-                for u in context
-            ]))
-        if context2!=None:
-            context2 = self.text_embedding(
-                torch.stack([
-                    torch.cat(
-                        [u, u.new_zeros(self.text_len - u.size(0), u.size(1))])
-                    for u in context2
-                ]))
-
+        context = [self.text_embedding( torch.cat( [u, u.new_zeros(self.text_len - u.size(0), u.size(1))] ).unsqueeze(0) ) for u in context  ] 
+        
         if clip_fea is not None:
             context_clip = self.img_emb(clip_fea)  # bs x 257 x dim
-            context = torch.concat([context_clip, context], dim=1)
-            if context2 != None:
-                context2 = torch.concat([context_clip, context2], dim=1)
+            context = [ torch.cat( [context_clip, u ], dim=1 ) for u in context  ] 
         
-        joint_pass = context2 != None
+        joint_pass = len(context) > 0 
+        x_list = [x]
         if joint_pass:
-            x_list = [x, x.clone()]
-            context_list = [context, context2]
+            if x_neg == None:
+                x_list +=  [x.clone() for i in  range(len(context) - 1) ]
+            else:
+                x_list +=  [x.clone() for i in  range(len(context) - 2) ] + [x_neg]
             is_uncond = False
-        else:
-            x_list = [x]
-            context_list = [context]
         del x
+        context_list = context
 
             # arguments
 
@@ -945,10 +982,7 @@ class WanModel(ModelMixin, ConfigMixin):
                 if callback != None:
                     callback(-1, None, False, True)
                 if pipeline._interrupt:
-                    if joint_pass:
-                        return None, None
-                    else:
-                        return [None]
+                    return [None] * len(x_list)
 
                 if slg_layers is not None and block_idx in slg_layers:
                     if is_uncond and not joint_pass:
@@ -983,10 +1017,7 @@ class WanModel(ModelMixin, ConfigMixin):
             x_list[i] = self.unpatchify(x, grid_sizes)
             del x
 
-        if joint_pass:
-            return x_list[0][0], x_list[1][0]
-        else:
-            return [u.float() for u in x_list[0]]
+        return [x[0].float() for x in x_list]
 
     def unpatchify(self, x, grid_sizes):
         r"""

wan/modules/vae.py

@@ -752,7 +752,8 @@ def _video_vae(pretrained_path=None, z_dim=None, device='cpu', **kwargs):
     logging.info(f'loading {pretrained_path}')
     # model.load_state_dict(
     #     torch.load(pretrained_path, map_location=device), assign=True)
-    offload.load_model_data(model, pretrained_path.replace(".pth", "_bf16.safetensors"), writable_tensors= False)    
+    # offload.load_model_data(model, pretrained_path.replace(".pth", "_bf16.safetensors"), writable_tensors= False)    
+    offload.load_model_data(model, pretrained_path.replace(".pth", ".safetensors"), writable_tensors= False)    
     return model
 
 
@@ -782,20 +783,22 @@ class WanVAE:
         self.model = _video_vae(
             pretrained_path=vae_pth,
             z_dim=z_dim,
-        ).eval() #.requires_grad_(False).to(device)
-
+        ).to(dtype).eval() #.requires_grad_(False).to(device)
+    
     def encode(self, videos, tile_size = 256, any_end_frame = False):
         """
         videos: A list of videos each with shape [C, T, H, W].
         """
+        original_dtype = videos[0].dtype
+        
         if tile_size > 0:
-            return [ self.model.spatial_tiled_encode(u.unsqueeze(0), self.scale, tile_size, any_end_frame=any_end_frame).float().squeeze(0) for u in videos ]
+            return [ self.model.spatial_tiled_encode(u.to(self.dtype).unsqueeze(0), self.scale, tile_size, any_end_frame=any_end_frame).float().squeeze(0) for u in videos ]
         else:
-            return [ self.model.encode(u.unsqueeze(0), self.scale, any_end_frame=any_end_frame).float().squeeze(0) for u in videos ]
+            return [ self.model.encode(u.to(self.dtype).unsqueeze(0), self.scale, any_end_frame=any_end_frame).float().squeeze(0) for u in videos ]
 
 
     def decode(self, zs, tile_size, any_end_frame = False):
         if tile_size > 0:
-            return [ self.model.spatial_tiled_decode(u.unsqueeze(0), self.scale, tile_size, any_end_frame=any_end_frame).clamp_(-1, 1).float().squeeze(0) for u in zs ]
+            return [ self.model.spatial_tiled_decode(u.to(self.dtype).unsqueeze(0), self.scale, tile_size, any_end_frame=any_end_frame).clamp_(-1, 1).float().squeeze(0) for u in zs ]
         else:
-            return [ self.model.decode(u.unsqueeze(0), self.scale, any_end_frame=any_end_frame).clamp_(-1, 1).float().squeeze(0) for u in zs ]
+            return [ self.model.decode(u.to(self.dtype).unsqueeze(0), self.scale, any_end_frame=any_end_frame).clamp_(-1, 1).float().squeeze(0) for u in zs ]

wan/text2video.py

@@ -52,7 +52,9 @@ class WanT2V:
         model_filename = None,
         text_encoder_filename = None,
         quantizeTransformer = False,
-        dtype = torch.bfloat16
+        dtype = torch.bfloat16,
+        VAE_dtype = torch.float32,
+        mixed_precision_transformer = False
     ):
         self.device = torch.device(f"cuda")
         self.config = config
@@ -71,24 +73,23 @@ class WanT2V:
 
         self.vae_stride = config.vae_stride
         self.patch_size = config.patch_size 
-
         
         self.vae = WanVAE(
-            vae_pth=os.path.join(checkpoint_dir, config.vae_checkpoint),
+            vae_pth=os.path.join(checkpoint_dir, config.vae_checkpoint), dtype= VAE_dtype,
             device=self.device)
 
         logging.info(f"Creating WanModel from {model_filename}")
         from mmgp import offload
-
-        self.model = offload.fast_load_transformers_model(model_filename, modelClass=WanModel,do_quantize= quantizeTransformer, writable_tensors= False)
-        # offload.load_model_data(self.model, "recam.ckpt")
+        # model_filename
+        self.model = offload.fast_load_transformers_model(model_filename, modelClass=WanModel,do_quantize= quantizeTransformer, writable_tensors= False ) #, forcedConfigPath= "e:/vace_config.json")
+        # offload.load_model_data(self.model, "e:/vace.safetensors")
+        # offload.load_model_data(self.model, "c:/temp/Phantom-Wan-1.3B.pth")
+        # self.model.to(torch.bfloat16)
         # self.model.cpu()
-        # offload.save_model(self.model, "recam.safetensors")
-        if self.dtype == torch.float16 and not "fp16" in model_filename:
-            self.model.to(self.dtype) 
-        # offload.save_model(self.model, "t2v_fp16.safetensors",do_quantize=True)
-        if self.dtype == torch.float16:
-            self.vae.model.to(self.dtype)
+        self.model.lock_layers_dtypes(torch.float32 if mixed_precision_transformer else dtype, True)
+        offload.change_dtype(self.model, dtype, True)
+        # offload.save_model(self.model, "mvace.safetensors", config_file_path="e:/vace_config.json")
+        # offload.save_model(self.model, "phantom_1.3B.safetensors")
         self.model.eval().requires_grad_(False)
 
 
@@ -252,6 +253,15 @@ class WanT2V:
 
         return self.vae.decode(trimed_zs, tile_size= tile_size)
 
+    def get_vae_latents(self, ref_images, device, tile_size= 0):
+        ref_vae_latents = []
+        for ref_image in ref_images:
+            ref_image = TF.to_tensor(ref_image).sub_(0.5).div_(0.5).to(self.device)
+            img_vae_latent = self.vae.encode([ref_image.unsqueeze(1)], tile_size= tile_size)
+            ref_vae_latents.append(img_vae_latent[0])
+                    
+        return torch.cat(ref_vae_latents, dim=1)
+        
     def generate(self,
                 input_prompt,
                 input_frames= None,
@@ -320,8 +330,15 @@ class WanT2V:
         seed_g = torch.Generator(device=self.device)
         seed_g.manual_seed(seed)
 
-        context = self.text_encoder([input_prompt], self.device)
-        context_null = self.text_encoder([n_prompt], self.device)
+        if self._interrupt:
+            return None
+        context = self.text_encoder([input_prompt], self.device)[0]
+        context_null = self.text_encoder([n_prompt], self.device)[0]
+        context = context.to(self.dtype)
+        context_null = context_null.to(self.dtype)
+        input_ref_images_neg = None
+        phantom = False
+
         if target_camera != None:
             size = (source_video.shape[2], source_video.shape[1])
             source_video = source_video.to(dtype=self.dtype , device=self.device)
@@ -346,8 +363,12 @@ class WanT2V:
             target_shape = list(z0[0].shape)
             target_shape[0] = int(target_shape[0] / 2)
         else:
+            if input_ref_images != None: # Phantom Ref images
+                phantom = True
+                input_ref_images = [self.get_vae_latents(input_ref_images, self.device)]
+                input_ref_images_neg = [torch.zeros_like(input_ref_images[0])]
             F = frame_num
-            target_shape = (self.vae.model.z_dim, (F - 1) // self.vae_stride[0] + 1,
+            target_shape = (self.vae.model.z_dim, (F - 1) // self.vae_stride[0] + 1 + (input_ref_images[0].shape[1] if input_ref_images != None else 0),
                             size[1] // self.vae_stride[1],
                             size[0] // self.vae_stride[2])
 
@@ -355,8 +376,8 @@ class WanT2V:
                             (self.patch_size[1] * self.patch_size[2]) *
                             target_shape[1]) 
 
-        context  = [u.to(self.dtype) for u in context]
-        context_null  = [u.to(self.dtype) for u in context_null]
+        if self._interrupt:
+            return None
 
         noise = [ torch.randn( *target_shape, dtype=torch.float32, device=self.device, generator=seed_g) ]
 
@@ -393,21 +414,15 @@ class WanT2V:
             freqs = get_rotary_pos_embed(shape, enable_RIFLEx= False) 
         else:
             freqs = get_rotary_pos_embed(latents[0].shape[1:], enable_RIFLEx= enable_RIFLEx) 
-        arg_c = {'context': context, 'freqs': freqs, 'pipeline': self, 'callback': callback}
-        arg_null = {'context': context_null, 'freqs': freqs, 'pipeline': self, 'callback': callback}
-        arg_both = {'context': context, 'context2': context_null,  'freqs': freqs, 'pipeline': self, 'callback': callback}
+
+        kwargs = {'freqs': freqs, 'pipeline': self, 'callback': callback}
 
         if target_camera != None:
-            recam_dict = {'cam_emb': cam_emb}
-            arg_c.update(recam_dict)
-            arg_null.update(recam_dict)
-            arg_both.update(recam_dict)
+            kwargs.update({'cam_emb': cam_emb})
 
         if input_frames != None:
-            vace_dict = {'vace_context' : z, 'vace_context_scale' : context_scale}
-            arg_c.update(vace_dict)
-            arg_null.update(vace_dict)
-            arg_both.update(vace_dict)
+            kwargs.update({'vace_context' : z, 'vace_context_scale' : context_scale})
+
 
         if self.model.enable_teacache:
             self.model.compute_teacache_threshold(self.model.teacache_start_step, timesteps, self.model.teacache_multiplier)
@@ -424,39 +439,68 @@ class WanT2V:
             timestep = [t]
             offload.set_step_no_for_lora(self.model, i)
             timestep = torch.stack(timestep)
-
+            kwargs["current_step"] = i 
+            kwargs["t"] = timestep 
             if joint_pass:
-                noise_pred_cond, noise_pred_uncond = self.model(
-                    latent_model_input, t=timestep,  current_step=i, slg_layers=slg_layers_local, **arg_both)
+                if phantom:
+                    pos_it, pos_i, neg = self.model(
+                        [torch.cat([latent[:,:-ref_latent.shape[1]], ref_latent], dim=1) for latent, ref_latent in zip(latent_model_input, input_ref_images)],
+                        x_neg = [torch.cat([latent[:,:-ref_latent_neg.shape[1]], ref_latent_neg], dim=1) for latent, ref_latent_neg in zip(latent_model_input, input_ref_images_neg)],  
+                        context = [context, context_null, context_null], **kwargs)
+                else:
+                    noise_pred_cond, noise_pred_uncond = self.model(
+                        latent_model_input, slg_layers=slg_layers_local, context = [context, context_null], **kwargs)
                 if self._interrupt:
                     return None
             else:
-                noise_pred_cond = self.model(
-                    latent_model_input, t=timestep,current_step=i, is_uncond = False, **arg_c)[0]
-                if self._interrupt:
-                    return None               
-                noise_pred_uncond = self.model(
-                    latent_model_input, t=timestep,current_step=i, is_uncond = True, slg_layers=slg_layers_local, **arg_null)[0]
-                if self._interrupt:
-                    return None
+                if phantom:
+                    pos_it = self.model(
+                        [torch.cat([latent[:,:-ref_latent.shape[1]], ref_latent], dim=1) for latent, ref_latent in zip(latent_model_input, input_ref_images)], context = [context], **kwargs
+                        )[0]
+                    if self._interrupt:
+                        return None               
+                    pos_i = self.model(
+                        [torch.cat([latent[:,:-ref_latent.shape[1]], ref_latent], dim=1) for latent, ref_latent in zip(latent_model_input, input_ref_images)],  context = [context_null],**kwargs
+                        )[0]
+                    if self._interrupt:
+                        return None               
+                    neg = self.model(
+                        [torch.cat([latent[:,:-ref_latent_neg.shape[1]], ref_latent_neg], dim=1) for latent, ref_latent_neg in zip(latent_model_input, input_ref_images_neg)], context = [context_null], **kwargs
+                        )[0]
+                    if self._interrupt:
+                        return None               
+                else:
+                    noise_pred_cond = self.model(
+                        latent_model_input, is_uncond = False, context = [context], **kwargs)[0]
+                    if self._interrupt:
+                        return None               
+                    noise_pred_uncond = self.model(
+                        latent_model_input, is_uncond = True, slg_layers=slg_layers_local,context = [context_null], **kwargs)[0]
+                    if self._interrupt:
+                        return None
 
             # del latent_model_input
 
             # CFG Zero *. Thanks to https://github.com/WeichenFan/CFG-Zero-star/
-            noise_pred_text = noise_pred_cond
-            if cfg_star_switch:
-                positive_flat = noise_pred_text.view(batch_size, -1)  
-                negative_flat = noise_pred_uncond.view(batch_size, -1)  
+            if phantom:
+                guide_scale_img= 5.0
+                guide_scale_text= guide_scale #7.5                
+                noise_pred = neg + guide_scale_img * (pos_i - neg) + guide_scale_text * (pos_it - pos_i)
+            else:
+                noise_pred_text = noise_pred_cond
+                if cfg_star_switch:
+                    positive_flat = noise_pred_text.view(batch_size, -1)  
+                    negative_flat = noise_pred_uncond.view(batch_size, -1)  
 
-                alpha = optimized_scale(positive_flat,negative_flat)
-                alpha = alpha.view(batch_size, 1, 1, 1)
+                    alpha = optimized_scale(positive_flat,negative_flat)
+                    alpha = alpha.view(batch_size, 1, 1, 1)
 
-                if (i <= cfg_zero_step):
-                    noise_pred = noise_pred_text*0. # it would be faster not to compute noise_pred...
-                else:
-                    noise_pred_uncond *= alpha
-            noise_pred = noise_pred_uncond + guide_scale * (noise_pred_text - noise_pred_uncond)            
-            del noise_pred_uncond
+                    if (i <= cfg_zero_step):
+                        noise_pred = noise_pred_text*0. # it would be faster not to compute noise_pred...
+                    else:
+                        noise_pred_uncond *= alpha
+                noise_pred = noise_pred_uncond + guide_scale * (noise_pred_text - noise_pred_uncond)            
+            noise_pred_uncond, noise_pred_cond, noise_pred_text, pos_it, pos_i, neg  = None, None, None, None, None, None
 
             temp_x0 = sample_scheduler.step(
                 noise_pred[:, :target_shape[1]].unsqueeze(0),
@@ -473,8 +517,12 @@ class WanT2V:
         x0 = latents
 
         if input_frames == None:
+            if phantom:
+                # phantom post processing
+                x0 = [x0_[:,:-input_ref_images[0].shape[1]] for x0_ in x0]
             videos = self.vae.decode(x0, VAE_tile_size)
         else:
+            # vace post processing
             videos = self.decode_latent(x0, input_ref_images, VAE_tile_size)
 
         del latents

wan/utils/utils.py

@@ -69,18 +69,29 @@ def remove_background(img, session=None):
 
 
 
-def resize_and_remove_background(img_list, budget_width, budget_height, rm_background ):
+def resize_and_remove_background(img_list, budget_width, budget_height, rm_background, fit_into_canvas = False ):
     if rm_background:
         session = new_session() 
 
     output_list =[]
     for img in img_list:
         width, height =  img.size 
-        scale = (budget_height * budget_width / (height * width))**(1/2)
-        new_height = int( round(height * scale / 16) * 16)
-        new_width = int( round(width * scale / 16) * 16)
 
-        resized_image= img.resize((new_width,new_height), resample=Image.Resampling.LANCZOS) 
+        if fit_into_canvas:
+            white_canvas = np.ones((budget_height, budget_width, 3), dtype=np.uint8) * 255 
+            scale = min(budget_height / height, budget_width / width)
+            new_height = int(height * scale)
+            new_width = int(width * scale)
+            resized_image= img.resize((new_width,new_height), resample=Image.Resampling.LANCZOS) 
+            top = (budget_height - new_height) // 2
+            left = (budget_width - new_width) // 2
+            white_canvas[top:top + new_height, left:left + new_width] = np.array(resized_image)            
+            resized_image = Image.fromarray(white_canvas)  
+        else:
+            scale = (budget_height * budget_width / (height * width))**(1/2)
+            new_height = int( round(height * scale / 16) * 16)
+            new_width = int( round(width * scale / 16) * 16)
+            resized_image= img.resize((new_width,new_height), resample=Image.Resampling.LANCZOS) 
         if rm_background:
             resized_image = remove(resized_image, session=session, alpha_matting = True, bgcolor=[255, 255, 255, 0]).convert('RGB')
         output_list.append(resized_image)

wgp.py

@@ -40,7 +40,7 @@ global_queue_ref = []
 AUTOSAVE_FILENAME = "queue.zip"
 PROMPT_VARS_MAX = 10
 
-target_mmgp_version = "3.4.0"
+target_mmgp_version = "3.4.1"
 from importlib.metadata import version
 mmgp_version = version("mmgp")
 if mmgp_version != target_mmgp_version:
@@ -133,10 +133,11 @@ def process_prompt_and_add_tasks(state, model_choice):
 
     model_filename = state["model_filename"]
 
-    if model_choice != get_model_type(model_filename):
+    model_type = get_model_type(model_filename)
+    inputs = state.get(model_type, None)
+    if model_choice != model_type or inputs ==None:
         raise gr.Error("Webform can not be used as the App has been restarted since the form was displayed. Please refresh the page")
- 
-    inputs = state.get(get_model_type(model_filename), None)
+    
     inputs["state"] =  state
     inputs.pop("lset_name")
     if inputs == None:
@@ -176,7 +177,7 @@ def process_prompt_and_add_tasks(state, model_choice):
             gr.Info(f"Resolution {resolution} not supported by image 2 video")
             return
 
-    if "1.3B" in  model_filename and width * height > 848*480:
+    if "1.3B" in  model_filename and width * height > 848*480 and any( model in model_filename for model in ["image2video", "text2video"] ):
         gr.Info("You must use the 14B model to generate videos with a resolution equivalent to 720P")
         return
 
@@ -186,8 +187,28 @@ def process_prompt_and_add_tasks(state, model_choice):
         if  video_length > sliding_window_size:
             gr.Info(f"The Number of Frames to generate ({video_length}) is greater than the Sliding Window Size ({sliding_window_size}) , multiple Windows will be generated")
 
+    if "phantom" in model_filename:
+        image_refs = inputs["image_refs"]
 
-    if "diffusion_forcing" in model_filename:
+        if isinstance(image_refs, list):
+            image_refs = [ convert_image(tup[0]) for tup in image_refs ]
+            os.environ["U2NET_HOME"] = os.path.join(os.getcwd(), "ckpts", "rembg")
+            from wan.utils.utils import resize_and_remove_background
+            image_refs = resize_and_remove_background(image_refs, width, height, inputs["remove_background_image_ref"] ==1, fit_into_canvas= True)
+        
+
+        if len(prompts) > 0:
+            prompts = ["\n".join(prompts)]
+
+        for single_prompt  in prompts:
+            extra_inputs = {
+                "prompt" : single_prompt,
+                "image_refs": image_refs,
+            }
+            inputs.update(extra_inputs) 
+            add_video_task(**inputs)
+
+    elif "diffusion_forcing" in model_filename:
         image_start = inputs["image_start"]
         video_source = inputs["video_source"]
         keep_frames_video_source = inputs["keep_frames_video_source"]
@@ -1362,10 +1383,6 @@ quantizeTransformer = args.quantize_transformer
 check_loras = args.check_loras ==1
 advanced = args.advanced
 
-transformer_choices_t2v=["ckpts/wan2.1_text2video_1.3B_bf16.safetensors", "ckpts/wan2.1_text2video_14B_bf16.safetensors", "ckpts/wan2.1_text2video_14B_quanto_int8.safetensors", "ckpts/wan2.1_Vace_1.3B_preview_bf16.safetensors", 
-                         "ckpts/wan2.1_recammaster_1.3B_bf16.safetensors", "ckpts/sky_reels2_diffusion_forcing_1.3B_bf16.safetensors", "ckpts/sky_reels2_diffusion_forcing_14B_bf16.safetensors", "ckpts/sky_reels2_diffusion_forcing_14B_quanto_int8.safetensors"]   
-transformer_choices_i2v=["ckpts/wan2.1_image2video_480p_14B_bf16.safetensors", "ckpts/wan2.1_image2video_480p_14B_quanto_int8.safetensors", "ckpts/wan2.1_image2video_720p_14B_bf16.safetensors", "ckpts/wan2.1_image2video_720p_14B_quanto_int8.safetensors", "ckpts/wan2.1_Fun_InP_1.3B_bf16.safetensors", "ckpts/wan2.1_Fun_InP_14B_bf16.safetensors", "ckpts/wan2.1_Fun_InP_14B_quanto_int8.safetensors", "ckpts/wan2.1_FLF2V_720p_14B_bf16.safetensors", "ckpts/wan2.1_FLF2V_720p_14B_quanto_int8.safetensors"]
-transformer_choices = transformer_choices_t2v + transformer_choices_i2v
 text_encoder_choices = ["ckpts/models_t5_umt5-xxl-enc-bf16.safetensors", "ckpts/models_t5_umt5-xxl-enc-quanto_int8.safetensors"]
 server_config_filename = "wgp_config.json"
 if not os.path.isdir("settings"):
@@ -1401,11 +1418,32 @@ else:
         text = reader.read()
     server_config = json.loads(text)
 
+# for src_path, tgt_path in zip( ["ckpts/sky_reels2_diffusion_forcing_14B_bf16.safetensors", "ckpts/sky_reels2_diffusion_forcing_14B_quanto_int8.safetensors"], ["ckpts/sky_reels2_diffusion_forcing_540p_14B_quanto_int8.safetensors", "ckpts/sky_reels2_diffusion_forcing_540p_14B_bf16.safetensors"] ):
+#     if Path(src_path).is_file():
+#         shutil.move(src_path, tgt_path) )
+# for path in  ["ckpts/wan2.1_Vace_1.3B_preview_mbf16.safetensors", "sky_reels2_diffusion_forcing_1.3B_bf16.safetensors"]:
+#     if Path(path).is_file():
+#         os.remove(path)
 
-model_types = [ "t2v_1.3B", "vace_1.3B", "fun_inp_1.3B", "t2v", "i2v", "i2v_720p", "fun_inp", "recam_1.3B", "flf2v_720p", "sky_df_1.3B", "sky_df_14B"]
+path= "ckpts/sky_reels2_diffusion_forcing_1.3B_bf16.safetensors"
+if os.path.isfile(path) and os.path.getsize(path) > 4000000000:
+    os.remove(path)
+
+transformer_choices_t2v=["ckpts/wan2.1_text2video_1.3B_bf16.safetensors", "ckpts/wan2.1_text2video_14B_bf16.safetensors", "ckpts/wan2.1_text2video_14B_quanto_int8.safetensors", "ckpts/wan2.1_Vace_1.3B_preview_mbf16.safetensors", 
+                         "ckpts/wan2.1_recammaster_1.3B_bf16.safetensors", "ckpts/sky_reels2_diffusion_forcing_1.3B_mbf16.safetensors", "ckpts/sky_reels2_diffusion_forcing_14B_bf16.safetensors",
+                        "ckpts/sky_reels2_diffusion_forcing_14B_quanto_int8.safetensors",  "ckpts/sky_reels2_diffusion_forcing_720p_14B_bf16.safetensors","ckpts/sky_reels2_diffusion_forcing_720p_14B_quanto_int8.safetensors", 
+                        "ckpts/wan2_1_phantom_1.3B_mbf16.safetensors"]   
+transformer_choices_i2v=["ckpts/wan2.1_image2video_480p_14B_bf16.safetensors", "ckpts/wan2.1_image2video_480p_14B_quanto_int8.safetensors", "ckpts/wan2.1_image2video_720p_14B_bf16.safetensors",
+                        "ckpts/wan2.1_image2video_720p_14B_quanto_int8.safetensors", "ckpts/wan2.1_Fun_InP_1.3B_bf16.safetensors", "ckpts/wan2.1_Fun_InP_14B_bf16.safetensors",
+                        "ckpts/wan2.1_Fun_InP_14B_quanto_int8.safetensors", "ckpts/wan2.1_FLF2V_720p_14B_bf16.safetensors", "ckpts/wan2.1_FLF2V_720p_14B_quanto_int8.safetensors"]
+transformer_choices = transformer_choices_t2v + transformer_choices_i2v
+
+model_types = [ "t2v_1.3B", "vace_1.3B", "fun_inp_1.3B", "t2v", "i2v", "i2v_720p", "fun_inp", "recam_1.3B", "flf2v_720p", "sky_df_1.3B", "sky_df_14B", "sky_df_720p_14B", "phantom_1.3B"]
 model_signatures = {"t2v": "text2video_14B", "t2v_1.3B" : "text2video_1.3B",   "fun_inp_1.3B" : "Fun_InP_1.3B",  "fun_inp" :  "Fun_InP_14B", 
                     "i2v" : "image2video_480p", "i2v_720p" : "image2video_720p" , "vace_1.3B" : "Vace_1.3B", "recam_1.3B": "recammaster_1.3B",
-                    "flf2v_720p" : "FLF2V_720p", "sky_df_1.3B" : "sky_reels2_diffusion_forcing_1.3B", "sky_df_14B" : "sky_reels2_diffusion_forcing_14B" }
+                    "flf2v_720p" : "FLF2V_720p", "sky_df_1.3B" : "sky_reels2_diffusion_forcing_1.3B", "sky_df_14B" : "sky_reels2_diffusion_forcing_14B", 
+                    "sky_df_720p_14B" : "sky_reels2_diffusion_forcing_720p_14B",
+                     "phantom_1.3B" : "phantom_1.3B",  }
 
 
 def get_model_type(model_filename):
@@ -1417,29 +1455,47 @@ def get_model_type(model_filename):
 def test_class_i2v(model_filename):
     return "image2video" in model_filename or "Fun_InP" in model_filename  or "FLF2V" in model_filename
 
-def get_model_name(model_filename):
+def get_model_name(model_filename, description_container = [""]):
     if "Fun" in model_filename:
         model_name = "Fun InP image2video"
         model_name += " 14B" if "14B" in model_filename else " 1.3B"
+        description = "The Fun model is an alternative image 2 video that supports out the box End Image fixing (contrary to the original Wan image 2 video model). The 1.3B adds also image 2 to video capability  to the 1.3B model."
     elif "Vace" in model_filename:
         model_name = "Vace ControlNet"
         model_name += " 14B" if "14B" in model_filename else " 1.3B"
+        description = "The Vace ControlNet model is a powerful model that allows you to control the content of the generated video based of additional custom data : pose or depth video, images or objects you want to see in the video."
     elif "image" in model_filename:
         model_name = "Wan2.1 image2video"
         model_name += " 720p" if "720p" in model_filename else " 480p"
+        if "720p" in model_filename:
+            description = "The standard Wan Image 2 Video specialized to generate 720p images. It also offers Start and End Image support (End Image is not supported in the original model but seems to work well)"
+        else:
+            description = "The standard Wan Image 2 Video specialized to generate 480p images. It also offers Start and End Image support (End Image is not supported in the original model but seems to work well)"
     elif "recam" in model_filename:
         model_name = "ReCamMaster"
         model_name += " 14B" if "14B" in model_filename else " 1.3B"
+        description = "The Recam Master in theory should allow you to replay a video by applying a different camera movement. The model supports only video that are at least 81 frames long (any frame beyond will be ignored)"
     elif "FLF2V" in model_filename:
         model_name = "Wan2.1 FLF2V"
         model_name += " 720p" if "720p" in model_filename else " 480p"
+        description = "The First Last Frame 2 Video model is the official model Image 2 Video model that support Start and End frames."
     elif "sky_reels2_diffusion_forcing" in model_filename:
-        model_name = "SkyReels2 diffusion forcing"
+        model_name = "SkyReels2 Diffusion Forcing"
+        if "720p" in model_filename :
+            model_name += " 720p"
+        elif not "1.3B" in model_filename :
+            model_name += " 540p"
         model_name += " 14B" if "14B" in model_filename else " 1.3B"
+        description = "The SkyReels 2 Diffusion Forcing model has been designed to generate very long videos that exceeds the usual 5s limit. You can also use this model to extend any existing video."
+    elif "phantom" in model_filename:
+        model_name = "Wan2.1 Phantom"
+        model_name += " 14B" if "14B" in model_filename else " 1.3B"
+        description = "The Phantom model is specialized to transfer people or objects of your choice into a generated Video. It produces very nices results when used at 720p."
     else:
         model_name = "Wan2.1 text2video"
         model_name += " 14B" if "14B" in model_filename else " 1.3B"
-
+        description = "The original Wan Text 2 Video model. Most other models have been built on top of it" 
+    description_container[0] = description
     return model_name
 
 
@@ -1493,13 +1549,28 @@ def get_default_settings(filename):
             "slg_end_perc": 90
         }
 
-        if get_model_type(filename) in ("sky_df_1.3B", "sky_df_14B"):
+        if get_model_type(filename) in ("sky_df_1.3B", "sky_df_14B", "sky_df_720p_14B"):
             ui_defaults.update({
                 "guidance_scale": 6.0,
                 "flow_shift": 8,
-                "sliding_window_discard_last_frames" : 0
+                "sliding_window_discard_last_frames" : 0,
+                "resolution": "1280x720" if "720p" in filename else "960x544",
+                "sliding_window_size" : 121 if "720p" in filename else 97,
+                "RIFLEx_setting": 2,
+                "guidance_scale": 6,
+                "flow_shift": 8,
             })
 
+
+        if get_model_type(filename) in ("phantom_1.3B"):
+            ui_defaults.update({
+                "guidance_scale": 7.5,
+                "flow_shift": 5,
+                "resolution": "1280x720" 
+            })
+
+            
+
         with open(defaults_filename, "w", encoding="utf-8") as f:
             json.dump(ui_defaults, f, indent=4)
     else:
@@ -1649,7 +1720,7 @@ def download_models(transformer_filename, text_encoder_filename):
     from huggingface_hub import hf_hub_download, snapshot_download    
     repoId = "DeepBeepMeep/Wan2.1" 
     sourceFolderList = ["xlm-roberta-large", "pose", "depth", "mask", "",  ]
-    fileList = [ [], [],[], ["sam_vit_h_4b8939_fp16.safetensors"], ["Wan2.1_VAE_bf16.safetensors", "models_clip_open-clip-xlm-roberta-large-vit-huge-14-bf16.safetensors", "flownet.pkl" ] + computeList(text_encoder_filename) + computeList(transformer_filename) ]   
+    fileList = [ [], [],[], ["sam_vit_h_4b8939_fp16.safetensors"], ["Wan2.1_VAE.safetensors", "models_clip_open-clip-xlm-roberta-large-vit-huge-14-bf16.safetensors", "flownet.pkl" ] + computeList(text_encoder_filename) + computeList(transformer_filename) ]   
     targetRoot = "ckpts/" 
     for sourceFolder, files in zip(sourceFolderList,fileList ):
         if len(files)==0:
@@ -1763,12 +1834,12 @@ def setup_loras(model_filename, transformer,  lora_dir, lora_preselected_preset,
     return loras, loras_names, loras_presets, default_loras_choices, default_loras_multis_str, default_lora_preset_prompt, default_lora_preset
 
 
-def load_t2v_model(model_filename, value, quantizeTransformer = False, dtype = torch.bfloat16):
+def load_t2v_model(model_filename, value, quantizeTransformer = False, dtype = torch.bfloat16, VAE_dtype = torch.float32, mixed_precision_transformer = False):
 
     cfg = WAN_CONFIGS['t2v-14B']
     # cfg = WAN_CONFIGS['t2v-1.3B']    
     print(f"Loading '{model_filename}' model...")
-    if  get_model_type(model_filename) in ("sky_df_1.3B", "sky_df_14B"):
+    if  get_model_type(model_filename) in ("sky_df_1.3B", "sky_df_14B", "sky_df_720p_14B"):
         model_factory = wan.DTT2V
     else:
         model_factory = wan.WanT2V
@@ -1779,52 +1850,32 @@ def load_t2v_model(model_filename, value, quantizeTransformer = False, dtype = t
         model_filename=model_filename,
         text_encoder_filename= text_encoder_filename,
         quantizeTransformer = quantizeTransformer,
-        dtype = dtype 
+        dtype = dtype,
+        VAE_dtype = VAE_dtype, 
+        mixed_precision_transformer = mixed_precision_transformer
     )
 
     pipe = {"transformer": wan_model.model, "text_encoder" : wan_model.text_encoder.model,  "vae": wan_model.vae.model } 
 
     return wan_model, pipe
 
-def load_i2v_model(model_filename, value, quantizeTransformer = False, dtype = torch.bfloat16):
+def load_i2v_model(model_filename, value, quantizeTransformer = False, dtype = torch.bfloat16, VAE_dtype = torch.float32, mixed_precision_transformer = False):
 
     print(f"Loading '{model_filename}' model...")
 
-    if value == '720P':
-        cfg = WAN_CONFIGS['i2v-14B']
-        wan_model = wan.WanI2V(
-            config=cfg,
-            checkpoint_dir="ckpts",
-            rank=0,
-            t5_fsdp=False,
-            dit_fsdp=False,
-            use_usp=False,
-            i2v720p= True,
-            model_filename=model_filename,
-            text_encoder_filename=text_encoder_filename,
-            quantizeTransformer = quantizeTransformer,
-            dtype = dtype
-        )            
-        pipe = {"transformer": wan_model.model, "text_encoder" : wan_model.text_encoder.model,  "text_encoder_2": wan_model.clip.model, "vae": wan_model.vae.model } #
+    cfg = WAN_CONFIGS['i2v-14B']
+    wan_model = wan.WanI2V(
+        config=cfg,
+        checkpoint_dir="ckpts",
+        model_filename=model_filename,
+        text_encoder_filename=text_encoder_filename,
+        quantizeTransformer = quantizeTransformer,
+        dtype = dtype,
+        VAE_dtype = VAE_dtype,
+        mixed_precision_transformer = mixed_precision_transformer
+    )            
+    pipe = {"transformer": wan_model.model, "text_encoder" : wan_model.text_encoder.model,  "text_encoder_2": wan_model.clip.model, "vae": wan_model.vae.model } #
 
-    elif value == '480P':
-        cfg = WAN_CONFIGS['i2v-14B']
-        wan_model = wan.WanI2V(
-            config=cfg,
-            checkpoint_dir="ckpts",
-            rank=0,
-            t5_fsdp=False,
-            dit_fsdp=False,
-            use_usp=False,
-            i2v720p= False,
-            model_filename=model_filename,
-            text_encoder_filename=text_encoder_filename,
-            quantizeTransformer = quantizeTransformer,
-            dtype = dtype
-        )
-        pipe = {"transformer": wan_model.model, "text_encoder" : wan_model.text_encoder.model,  "text_encoder_2": wan_model.clip.model, "vae": wan_model.vae.model } #
-    else:
-        raise Exception("Model i2v {value} not supported")
     return wan_model, pipe
 
 
@@ -1836,18 +1887,22 @@ def load_models(model_filename):
     perc_reserved_mem_max = args.perc_reserved_mem_max
 
     major, minor = torch.cuda.get_device_capability(args.gpu if len(args.gpu) > 0 else None)
-    default_dtype = torch.float16 if major < 8 else torch.bfloat16
-    # default_dtype = torch.bfloat16
-    if default_dtype == torch.float16 or args.fp16:
+    if  major < 8:
         print("Switching to f16 model as GPU architecture doesn't support bf16")
+        default_dtype = torch.float16
+    else:
+        default_dtype = torch.float16 if args.fp16 else torch.bfloat16
+    if default_dtype == torch.float16   :
         if "quanto" in model_filename:
             model_filename = model_filename.replace("quanto_int8", "quanto_fp16_int8")
     download_models(model_filename, text_encoder_filename)
+    VAE_dtype = torch.float16 if server_config.get("vae_precision","16") == "16" else torch.float
+    mixed_precision_transformer =  server_config.get("mixed_precision","0") == "1"
     if test_class_i2v(model_filename):
         res720P = "720p" in model_filename
-        wan_model, pipe = load_i2v_model(model_filename, "720P" if res720P else "480P", quantizeTransformer = quantizeTransformer, dtype = default_dtype )
+        wan_model, pipe = load_i2v_model(model_filename, "720P" if res720P else "480P", quantizeTransformer = quantizeTransformer, dtype = default_dtype, VAE_dtype = VAE_dtype, mixed_precision_transformer = mixed_precision_transformer)
     else:
-        wan_model, pipe = load_t2v_model(model_filename, "", quantizeTransformer = quantizeTransformer, dtype = default_dtype)
+        wan_model, pipe = load_t2v_model(model_filename, "", quantizeTransformer = quantizeTransformer, dtype = default_dtype, VAE_dtype = VAE_dtype, mixed_precision_transformer = mixed_precision_transformer)
     wan_model._model_file_name = model_filename
     kwargs = { "extraModelsToQuantize": None}
     if profile == 2 or profile == 4:
@@ -1888,8 +1943,13 @@ def get_default_flow(filename, i2v):
 
 
 def generate_header(model_filename, compile, attention_mode):
-    
-    header = "<DIV style='align:right;width:100%'><FONT SIZE=3>Attention mode <B>" + (attention_mode if attention_mode!="auto" else "auto/" + get_auto_attention() )
+
+    description_container = [""]
+    get_model_name(model_filename, description_container)
+    description  = description_container[0]
+    header = "<DIV style='height:40px'>" + description + "</DIV>"
+
+    header += "<DIV style='align:right;width:100%'><FONT SIZE=3>Attention mode <B>" + (attention_mode if attention_mode!="auto" else "auto/" + get_auto_attention() )
     if attention_mode not in attention_modes_installed:
         header += " -NOT INSTALLED-"
     elif attention_mode not in attention_modes_supported:
@@ -1907,6 +1967,8 @@ def generate_header(model_filename, compile, attention_mode):
 def apply_changes(  state,
                     transformer_types_choices,
                     text_encoder_choice,
+                    VAE_precision_choice,
+                    mixed_precision_choice,
                     save_path_choice,
                     attention_choice,
                     compile_choice,
@@ -1922,7 +1984,7 @@ def apply_changes(  state,
     if args.lock_config:
         return
     if gen_in_progress:
-        return "<DIV ALIGN=CENTER>Unable to change config when a generation is in progress</DIV>"
+        return "<DIV ALIGN=CENTER>Unable to change config when a generation is in progress</DIV>", gr.update(), gr.update()
     global offloadobj, wan_model, server_config, loras, loras_names, default_loras_choices, default_loras_multis_str, default_lora_preset_prompt, default_lora_preset, loras_presets
     server_config = {"attention_mode" : attention_choice,  
                      "transformer_types": transformer_types_choices, 
@@ -1931,6 +1993,8 @@ def apply_changes(  state,
                      "compile" : compile_choice,
                      "profile" : profile_choice,
                      "vae_config" : vae_config_choice,
+                     "vae_precision" : VAE_precision_choice,
+                     "mixed_precision" : mixed_precision_choice,
                      "metadata_type": metadata_choice,
                      "transformer_quantization" : quantization_choice,
                      "boost" : boost_choice,
@@ -2052,12 +2116,9 @@ def build_callback(state, pipe, send_cmd, status, num_inference_steps):
     return callback
 def abort_generation(state):
     gen = get_gen_info(state)
-    if "in_progress" in gen:
+    if "in_progress" in gen and wan_model != None:
 
-        gen["abort"] = True
-        gen["extra_orders"] = 0
-        if wan_model != None:
-            wan_model._interrupt= True
+        wan_model._interrupt= True
         msg = "Processing Request to abort Current Generation"
         gen["status"] = msg
         gr.Info(msg)
@@ -2140,13 +2201,6 @@ def finalize_generation(state):
     return gr.Gallery(selected_index=choice), gr.Button(interactive=  True), gr.Button(visible= True), gr.Button(visible= False), gr.Column(visible= False), gr.HTML(visible= False, value="")
 
 
-def refresh_gallery_on_trigger(state):
-    gen = get_gen_info(state)
-
-    if(gen.get("update_gallery", False)):
-        gen['update_gallery'] = False
-        return gr.update(value=gen.get("file_list", []))
-
 def select_video(state , event_data: gr.EventData):
     data=  event_data._data
     gen = get_gen_info(state)
@@ -2385,6 +2439,8 @@ def generate_video(
      # VAE Tiling
     device_mem_capacity = torch.cuda.get_device_properties(0).total_memory / 1048576
     if vae_config == 0:
+        if server_config.get("vae_precision", "16") == "32":
+            device_mem_capacity = device_mem_capacity / 2
         if device_mem_capacity >= 24000:
             use_vae_config = 1            
         elif device_mem_capacity >= 8000:
@@ -2497,6 +2553,7 @@ def generate_video(
     max_frames_to_generate = video_length
     diffusion_forcing = "diffusion_forcing" in model_filename
     vace = "Vace" in model_filename
+    phantom = "phantom" in model_filename
     if diffusion_forcing or vace:
         reuse_frames = min(sliding_window_size - 4, sliding_window_overlap)
     if diffusion_forcing and source_video != None:
@@ -2536,6 +2593,7 @@ def generate_video(
         extra_windows = 0
         guide_start_frame = 0
         video_length = first_window_video_length
+        gen["extra_windows"] = 0
         while not abort:
             if sliding_window:
                 prompt =  prompts[window_no] if window_no < len(prompts) else prompts[-1]
@@ -2550,7 +2608,9 @@ def generate_video(
             window_no += 1
             gen["window_no"] = window_no
             
-            if diffusion_forcing:
+            if phantom:
+                src_ref_images = image_refs.copy() if image_refs != None else None
+            elif diffusion_forcing:
                 if video_source != None and len(video_source) > 0 and window_no == 1:
                     keep_frames_video_source= 1000 if len(keep_frames_video_source) ==0 else int(keep_frames_video_source) 
                     prefix_video  = preprocess_video(None, width=width, height=height,video_in=video_source, max_frames= keep_frames_video_source , start_frame = 0, fit_canvas= True, target_fps = fps)
@@ -2559,7 +2619,7 @@ def generate_video(
                     prefix_video_frames_count = prefix_video.shape[1]
                     pre_video_guide =  prefix_video[:, -reuse_frames:]
 
-            if vace:
+            elif vace:
                 # video_prompt_type =  video_prompt_type +"G"
                 image_refs_copy = image_refs.copy() if image_refs != None else None # required since prepare_source do inplace modifications
                 video_guide_copy = video_guide
@@ -2610,7 +2670,7 @@ def generate_video(
             progress_args = [0, status + " - Encoding Prompt"]
             send_cmd("progress", progress_args)
 
-            samples = torch.empty( (1,2)) #for testing
+            # samples = torch.empty( (1,2)) #for testing
             # if False:
             
             try:
@@ -2633,7 +2693,6 @@ def generate_video(
                         guide_scale=guidance_scale,
                         n_prompt=negative_prompt,
                         seed=seed,
-                        offload_model=False,
                         callback=callback,
                         enable_RIFLEx = enable_RIFLEx,
                         VAE_tile_size = VAE_tile_size,
@@ -2738,6 +2797,7 @@ def generate_video(
             if samples == None:
                 abort = True
                 state["prompt"] = ""
+                send_cmd("output")  
             else:
                 sample = samples.cpu()
                 if True: # for testing
@@ -2839,7 +2899,6 @@ def generate_video(
 
                 print(f"New video saved to Path: "+video_path)
                 file_list.append(video_path)
-                state['update_gallery'] = True
                 send_cmd("output")
                 if sliding_window :
                     if max_frames_to_generate > 0 and extra_windows == 0:
@@ -2847,8 +2906,6 @@ def generate_video(
                         if (current_length - prefix_video_frames_count)>= max_frames_to_generate:
                             break
                         video_length = min(sliding_window_size, ((max_frames_to_generate - (current_length - prefix_video_frames_count) + reuse_frames + discard_last_frames) // 4) * 4 + 1 )
-                else:
-                    break
 
         seed += 1
 
@@ -3416,7 +3473,7 @@ def prepare_inputs_dict(target, inputs ):
     if not "recam" in model_filename or not "diffusion_forcing" in model_filename:
         inputs.pop("model_mode")
 
-    if not "Vace" in model_filename:
+    if not "Vace" in model_filename or not "phantom" in model_filename:
         unsaved_params = ["keep_frames_video_guide", "video_prompt_type",  "remove_background_image_ref"]
         for k in unsaved_params:
             inputs.pop(k)
@@ -3776,6 +3833,7 @@ def generate_video_tab(update_form = False, state_dict = None, ui_defaults = Non
             diffusion_forcing = "diffusion_forcing" in model_filename 
             recammaster = "recam" in model_filename
             vace = "Vace" in model_filename
+            phantom = "phantom" in model_filename
             with gr.Column(visible= test_class_i2v(model_filename) or diffusion_forcing or recammaster) as image_prompt_column: 
                 if diffusion_forcing:
                     image_prompt_type_value= ui_defaults.get("image_prompt_type","S")
@@ -3835,23 +3893,27 @@ def generate_video_tab(update_form = False, state_dict = None, ui_defaults = Non
                     model_mode = gr.Dropdown(visible=False)
                     keep_frames_video_source = gr.Text(visible=False)
 
-            with gr.Column(visible= vace ) as video_prompt_column: 
+            with gr.Column(visible= vace or phantom) as video_prompt_column: 
                 video_prompt_type_value= ui_defaults.get("video_prompt_type","")
                 video_prompt_type = gr.Text(value= video_prompt_type_value, visible= False)
                 with gr.Row():
-                    video_prompt_type_video_guide = gr.Dropdown(
-                        choices=[
-                            ("None", ""),
-                            ("Transfer Human Motion from the Control Video", "PV"),
-                            ("Transfer Depth from the Control Video", "DV"),
-                            ("Recolorize the Control Video", "CV"),
-                            # ("Alternate Video Ending", "OV"),
-                            ("Video contains Open Pose, Depth, Black & White, Inpainting ", "V"),
-                            ("Control Video and Mask video for stronger Inpainting ", "MV"),
-                        ],
-                        value=filter_letters(video_prompt_type_value, "ODPCMV"),
-                        label="Video to Video", scale = 3
-                    )
+                    if vace:
+                        video_prompt_type_video_guide = gr.Dropdown(
+                            choices=[
+                                ("None", ""),
+                                ("Transfer Human Motion from the Control Video", "PV"),
+                                ("Transfer Depth from the Control Video", "DV"),
+                                ("Recolorize the Control Video", "CV"),
+                                # ("Alternate Video Ending", "OV"),
+                                ("Video contains Open Pose, Depth, Black & White, Inpainting ", "V"),
+                                ("Control Video and Mask video for stronger Inpainting ", "MV"),
+                            ],
+                            value=filter_letters(video_prompt_type_value, "ODPCMV"),
+                            label="Video to Video", scale = 3, visible= True
+                        )
+                    else:
+                        video_prompt_type_video_guide = gr.Dropdown(visible= False)
+
                     video_prompt_video_guide_trigger = gr.Text(visible=False, value="")
 
                     video_prompt_type_image_refs = gr.Dropdown(
@@ -3869,7 +3931,8 @@ def generate_video_tab(update_form = False, state_dict = None, ui_defaults = Non
                 image_refs = gr.Gallery( label ="Reference Images",
                         type ="pil",   show_label= True,
                         columns=[3], rows=[1], object_fit="contain", height="auto", selected_index=0, interactive= True, visible= "I" in video_prompt_type_value, 
-                        value= ui_defaults.get("image_refs", None) )
+                        value= ui_defaults.get("image_refs", None),
+                 )
 
                 # with gr.Row():
                 remove_background_image_ref = gr.Checkbox(value=ui_defaults.get("remove_background_image_ref",1), label= "Remove Background of Images References", visible= "I" in video_prompt_type_value, scale =1 ) 
@@ -3929,7 +3992,8 @@ def generate_video_tab(update_form = False, state_dict = None, ui_defaults = Non
                             # ("832x1104 (3:4, 720p)", "832x1104"),
                             # ("960x960 (1:1, 720p)", "960x960"),
                             # 480p
-                            # ("960x544 (16:9, 480p)", "960x544"),
+                            ("960x544 (16:9, 540p)", "960x544"),
+                            ("544x960 (16:9, 540p)", "544x960"),
                             ("832x480 (16:9, 480p)", "832x480"),
                             ("480x832 (9:16, 480p)", "480x832"),
                             # ("832x624 (4:3, 540p)", "832x624"), 
@@ -4082,13 +4146,13 @@ def generate_video_tab(update_form = False, state_dict = None, ui_defaults = Non
                         gr.Markdown("<B>A Sliding Window allows you to generate video with a duration not limited by the Model</B>")
                         gr.Markdown("<B>It is automatically turned on if the number of frames to generate is higher than the Window Size</B>")
                         if diffusion_forcing:
-                            sliding_window_size = gr.Slider(37, 137, value=ui_defaults.get("sliding_window_size", 97), step=20, label="Sliding Window Size")
+                            sliding_window_size = gr.Slider(37, 137, value=ui_defaults.get("sliding_window_size", 97), step=20, label="Sliding Window Size (recommended to keep it at 97)")
                             sliding_window_overlap = gr.Slider(17, 97, value=ui_defaults.get("sliding_window_overlap",17), step=20, label="Windows Frames Overlap (needed to maintain continuity between windows, a higher value will require more windows)")
-                            sliding_window_discard_last_frames = gr.Slider(0, 10, value=ui_defaults.get("sliding_window_discard_last_frames", 0), step=1, visible = False)
+                            sliding_window_discard_last_frames = gr.Slider(0, 12, value=ui_defaults.get("sliding_window_discard_last_frames", 0), step=4, visible = False)
                         else:
                             sliding_window_size = gr.Slider(5, 137, value=ui_defaults.get("sliding_window_size", 81), step=4, label="Sliding Window Size")
                             sliding_window_overlap = gr.Slider(1, 97, value=ui_defaults.get("sliding_window_overlap",17), step=4, label="Windows Frames Overlap (needed to maintain continuity between windows, a higher value will require more windows)")
-                            sliding_window_discard_last_frames = gr.Slider(0, 10, value=ui_defaults.get("sliding_window_discard_last_frames", 16), step=1, label="Discard Last Frames of a Window (that may have bad quality)", visible = True)
+                            sliding_window_discard_last_frames = gr.Slider(0, 12, value=ui_defaults.get("sliding_window_discard_last_frames", 4), step=4, label="Discard Last Frames of a Window (that may have bad quality)", visible = True)
 
 
                 with gr.Tab("Miscellaneous", visible= not "recam" in model_filename):
@@ -4429,13 +4493,22 @@ def generate_configuration_tab(state, blocks, header, model_choice):
 
         quantization_choice = gr.Dropdown(
             choices=[
-                ("Int8 Quantization (recommended)", "int8"),
+                ("Scaled Int8 Quantization (recommended)", "int8"),
                 ("16 bits (no quantization)", "bf16"),
             ],
             value= transformer_quantization,
             label="Wan Transformer Model Quantization Type (if available)",
          )                
 
+        mixed_precision_choice = gr.Dropdown(
+            choices=[
+                ("16 bits only, requires less VRAM", "0"),
+                ("Mixed 16 / 32 bits, slightly more VRAM needed but better Quality", "1"),
+            ],
+            value= server_config.get("mixed_precision", "0"),
+            label="Transformer Engine Calculation"
+         )
+
         index = text_encoder_choices.index(text_encoder_filename)
         index = 0 if index ==0 else index
         text_encoder_choice = gr.Dropdown(
@@ -4446,6 +4519,16 @@ def generate_configuration_tab(state, blocks, header, model_choice):
             value= index,
             label="Text Encoder model"
          )
+
+        VAE_precision_choice = gr.Dropdown(
+            choices=[
+                ("16 bits, requires less VRAM and faster", "16"),
+                ("32 bits, requires twice more VRAM and slower but recommended with Window Sliding", "32"),
+            ],
+            value= server_config.get("vae_precision", "16"),
+            label="VAE Encoding / Decoding precision"
+         )
+
         save_path_choice = gr.Textbox(
             label="Output Folder for Generated Videos",
             value=server_config.get("save_path", save_path)
@@ -4510,14 +4593,7 @@ def generate_configuration_tab(state, blocks, header, model_choice):
             value= profile,
             label="Profile (for power users only, not needed to change it)"
          )
-        # default_ui_choice = gr.Dropdown(
-        #     choices=[
-        #         ("Text to Video", "t2v"),
-        #         ("Image to Video", "i2v"),
-        #     ],
-        #     value= default_ui,
-        #     label="Default mode when launching the App if not '--t2v' ot '--i2v' switch is specified when launching the server ",
-        #  )                
+      
         metadata_choice = gr.Dropdown(
             choices=[
                 ("Export JSON files", "json"),
@@ -4563,6 +4639,8 @@ def generate_configuration_tab(state, blocks, header, model_choice):
                     state,
                     transformer_types_choices,
                     text_encoder_choice,
+                    VAE_precision_choice,
+                    mixed_precision_choice,
                     save_path_choice,
                     attention_choice,
                     compile_choice,                            
@@ -4957,7 +5035,7 @@ def create_demo():
         theme = gr.themes.Soft(font=["Verdana"], primary_hue="sky", neutral_hue="slate", text_size="md")
 
     with gr.Blocks(css=css, theme=theme, title= "Wan2GP") as main:
-        gr.Markdown("<div align=center><H1>Wan<SUP>GP</SUP> v4.3 <FONT SIZE=4>by <I>DeepBeepMeep</I></FONT> <FONT SIZE=3>") # (<A HREF='https://github.com/deepbeepmeep/Wan2GP'>Updates</A>)</FONT SIZE=3></H1></div>")
+        gr.Markdown("<div align=center><H1>Wan<SUP>GP</SUP> v4.4 <FONT SIZE=4>by <I>DeepBeepMeep</I></FONT> <FONT SIZE=3>") # (<A HREF='https://github.com/deepbeepmeep/Wan2GP'>Updates</A>)</FONT SIZE=3></H1></div>")
         global model_list
 
         tab_state = gr.State({ "tab_no":0 })