Update README.md

README.md

@@ -22,6 +22,7 @@ To clone the repository and set up the environment, follow these steps:
 git clone https://github.com/svjack/ToonCrafter_with_SketchGuidance && cd ToonCrafter_with_SketchGuidance
 pip install -r requirements.txt
 pip install --upgrade einops
+pip install pyav==13.1.0
 ```
 
 ### List Control Models