diff --git a/ltx_video/pipelines/crf_compressor.py b/ltx_video/pipelines/crf_compressor.py
index 9b9380a..416c3f7 100644
--- a/ltx_video/pipelines/crf_compressor.py
+++ b/ltx_video/pipelines/crf_compressor.py
@@ -1,4 +1,4 @@
-import av
+# import av
 import torch
 import io
 import numpy as np
diff --git a/requirements.txt b/requirements.txt
index 237b447..deeaa58 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,4 +31,5 @@ omegaconf
 hydra-core
 librosa
 loguru
+sentencepiece
 # rembg==2.0.65