add note for make prompt need ffmpeg

README-ZH.md

@@ -40,6 +40,9 @@ git clone https://github.com/Plachtaa/VALL-E-X.git
 cd VALL-E-X
 pip install -r requirements.txt
 ```
+
+> 注意：如果需要制作prompt，需要安装 ffmpeg 并将其所在文件夹加入到环境变量PATH中
+
 ## 🎧 在线Demo
 如果你不想在本地安装，你可以在线体验VALL-E X的功能，点击下面的任意一个链接即可开始体验。
 <br>

README.md

@@ -39,6 +39,9 @@ git clone https://github.com/Plachtaa/VALL-E-X.git
 cd VALL-E-X
 pip install -r requirements.txt
 ```
+
+> Note: If you want to make prompt, you need to install ffmpeg and add its folder to the environment variable PATH.
+
 ## 🎧 Demos
 Not ready to set up the environment on your local machine just yet? No problem! We've got you covered with our online demos. You can try out VALL-E X directly on Hugging Face or Google Colab, experiencing the model's capabilities hassle-free!
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