Further notes on this can be found in the wiki. This is due to YouTube storing some of the qualities - including 480p, 720p60, 1080p and 1080p60 - as video only (DASH), and playing it back synchronously with a separate m4a audio stream.īecause of this, to download these videos, both the video stream ( *.m4v) and audio stream ( *.m4a) must be downloaded, and then remuxed into a single mp4 video after they have downloaded. Some of the qualities available for any given YouTube video are video only. More information can be found in the wiki Conversion of video-only streams + audio -> video and audio -> mp3 are supported on Windows, Mac and Linux, using the ffmpeg library.
This is a userscript that allows the user to download any streamable YouTube video in selected formats.
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