ref: 198f12cf65a7f4730baf477972bdb94e5e7401fe
dir: /youtube.md/
Youtube
=======
Commit [treason](https://git.sr.ht/~ft/treason). It supports H.264
(allegedly all types of it as of 2020/12/11), VP8, VP9 and AV1.
*NOTE* one does not simply commit treason on anything other than AMD64
or 386. No videos for Raspi users, sorry. You can still play audio
only on other arches though.
Install [youtubedr](https://github.com/ftrvxmtrx/youtube):
9fs ftrv.se
gunzip < /n/ftrv.se/bin/youtubedr.$objtype.gz > $home/bin/$objtype/youtubedr
chmod +x $home/bin/$objtype/youtubedr
hget https://curl.haxx.se/ca/cacert.pem > /sys/lib/tls/ca.pem
`youtubedr` may fail with "error parsing signature tokens". Not much
can be done here until the upstream incorporates some logic that
`youtube-dl` has. For now, some of the videos will just fail to
download. *BUMMER*.
## Playing just audio alone
mcfs -t 1 `"{youtubedr -i 140 -o /tmp/audio.mp4 ybGOT4d2Hs8} | audio/aacdec > /dev/audio
## Playing video and/or audio
The easiest way to play ANY video on Youtube is to use H.264
"baseline" stream. It's of pretty bad quality image-wise, but
contains audio in the container itself and doesn't require too much
CPU resources.
treason `"{youtubedr -i 18 -o /tmp/_vid.mp4 ybGOT4d2Hs8}; rm -f /tmp/_vid.mp4
If you want to find the best possible format, use the following script:
#!/bin/rc
rfork ne
vitag=`{youtubedr -info $"1 | awk '
/av01/ {
tags[ntags++] = $2
if($2 == "398"){ # prefer hd720
tags[0] = $2
exit
}
}
END {
if(ntags > 0)
print tags[0]
}
'}
if(~ $#vitag 0)
treason `"{youtubedr -i 18 -o /tmp/_vid.mp4 $"1}
if not
treason -a `"{youtubedr -i 140 -o /tmp/_aud.mp4 $"1} `"{youtubedr -i $vitag -o /tmp/_vid.mp4 $"1}
#rm -f /tmp/_^(aud vid)^.mp4
*TODO* This script should be extended to choose best format based on
preferences (resolution) and CPU resources.
You can put that script to `$home/bin/rc/youtube` and add a plumb rule
for Youtube URLs, right *before* `include basic`:
type is text
data matches 'https://(www.)?youtube[^ ]+'
plumb start window youtube ''''$0''''
## Caveats
Many. Patches welcome.