I'm backing up my Youtube favorites locally since 2018, so far 10k videos. I might try to use this because seems like would be a fun way to play them in the background on a second monitor.
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This is the command that the daemon runs to request 720p, for example:
command = 'yt-dlp --write-info-json -f "bv*[height<=720]+ba" --output "out.%%(ext)s" --merge-output-format mp4 "%s"' % url