to the best of my knowledge, that's because your system does not have ffmpeg for subsequent transcoding of the site's format into what you would consider "your"

to the best of my knowledge, that's because your system does not have ffmpeg for subsequent transcoding of the site's format into what you would consider "your" format: https://github.com/yt-dlp/yt-dlp/blob/2023.07.06/README.md#strongly-recommended https://github.com/yt-dlp/yt-dlp/blob/2023.07.06/README.md#s... (they also allow you to specify the path, if you don't have it in your $PATH, via --ffmpeg-location <https://github.com/yt-dlp/yt-dlp/blob/2023.07.06/README.md?plain=1#L1037 https://github.com/yt-dlp/yt-dlp/blob/2023.07.06/README.md?p...>)