For better quality and batch processing, desktop applications are often more reliable.
Use VLC's tool to turn that MP4 into an AVI. Important Considerations youtube 2 avi download
By following these steps and using the recommended software and online tools, you should be able to download YouTube videos and convert them to AVI format. For better quality and batch processing
The fastest way to save your favorite YouTube videos in high-quality AVI format for offline viewing. Creative Commons with download allowed)
Downloading copyrighted content without permission may violate YouTube’s Terms of Service and copyright law. Only download videos you own, that are explicitly licensed for download (e.g., Creative Commons with download allowed), or when you have the right or permission from the copyright holder.