Please ensure you only download content that you have the rights to, or content that is under a Creative Commons license, to respect copyright policies. Video and audio formatting specifications - YouTube Help
Depending on your needs, you can use online web-based tools or more powerful desktop software. Top Options ClipConverter FreeConvert , YT Converter Quick, one-time conversions No installation; limited by file size and internet speed. UniFab Video Converter VideoProc Converter AI High-quality, bulk, or 4K conversions youtube 2 avi download