[bitchute/ffmpeg] Muxing fails due to unsupported timecode stream in MP4 file + -map 0

[jbruchon]

Copied from blackjack4494/yt-dlc#291

Verbose log

Y:\YouTube Channels\Chass>youtube-dl --cookies "Y:\cookies.txt" --add-metadata --write-description --write-info-json --write-thumbnail --all-subs --sleep-interval 1 -ciw -o "%(title)s.%(ext)s" -v https://www.bitchute.com/video/7KOApju0sI1E/
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--cookies', 'Y:\\cookies.txt', '--add-metadata', '--write-description', '--write-info-json', '--write-thumbnail', '--all-subs', '--sleep-interval', '1', '-ciw', '-o', '%(title)s.%(ext)s', '-v', 'https://www.bitchute.com/video/7KOApju0sI1E/']
[debug] Loading archive file None
[debug] Encodings: locale cp1252, fs utf-8, out utf-8, pref cp1252
[debug] youtube-dlc version 2020.11.11-2
[debug] Python version 3.9.0 (CPython) - Windows-10-10.0.19041-SP0
[debug] exe versions: ffmpeg 4.3.1-2020-11-19-full_build-www.gyan.dev, ffprobe 4.3.1-2020-11-19-full_build-www.gyan.dev
[debug] Proxy map: {}
[BitChute] 7KOApju0sI1E: Downloading webpage
[BitChute] 7KOApju0sI1E: Checking video URL
[debug] Default format spec: bestvideo+bestaudio/best
[info] Video description is already present
[info] Video description metadata is already present
[BitChute] 7KOApju0sI1E: Thumbnail is already present
[debug] Invoking downloader on 'https://z-28b3jxzl1og7.bitchute.com/iAhk3bN20i22/7KOApju0sI1E.mp4'
[download] 4chan threads - _x_ - The Desolate Towns Phenomenon.mp4 has already been downloaded
[download] 100% of 22.94MiB
[ffmpeg] Adding metadata to '4chan threads - _x_ - The Desolate Towns Phenomenon.mp4'
[debug] ffmpeg command line: ffmpeg -y -loglevel "repeat+info" -i "file:4chan threads - _x_ - The Desolate Towns Phenomenon.mp4" -map 0 -c copy -metadata "title=4chan threads - /x/ - The Desolate Towns Phenomenon" -metadata "date=20201218" -metadata "description=https://yuki.la/x/17299706
https://archive.4plebs.org/x/thread/22403433/#q22418409
https://yuki.la/x/25030586
If you wish to donate: https://www.paypal.me/thechasseurchannel
Bitchute: https://www.bitchute.com/channel/Chass/
Ultimate Spooky Greentext Playlist: https://www.youtube.com/playlist?list=PLbDSt84tOm2Nm0D8baMW3CfVaaF03LCjB
Music used:
Won't sleep - Kukomitzu
https://youtu.be/vz3KlzgEFm8?t=6
Stalker – Kukomitzu
https://youtu.be/vz3KlzgEFm8?t=297
♫ Epic Horror Synth Trailer Music ♪♬ - Something Wicked
https://www.youtube.com/watch?v=Zuw_O5MU5CE
[Vaporwave] Stevia Sphere - mint
https://www.youtube.com/watch?v=ykT3wtSCpzE
\"Midnight, the Stars and You\"
https://www.youtube.com/watch?v=-fN-Xjpd-qE
My last roadtrip - Kukomitzu
https://youtu.be/vz3KlzgEFm8?t=597
Outro music:
Gothic 3 - Geldern Night
https://www.youtube.com/watch?v=wCtV4DYZkK0" -metadata "comment=https://yuki.la/x/17299706
https://archive.4plebs.org/x/thread/22403433/#q22418409
https://yuki.la/x/25030586
If you wish to donate: https://www.paypal.me/thechasseurchannel
Bitchute: https://www.bitchute.com/channel/Chass/
Ultimate Spooky Greentext Playlist: https://www.youtube.com/playlist?list=PLbDSt84tOm2Nm0D8baMW3CfVaaF03LCjB
Music used:
Won't sleep - Kukomitzu
https://youtu.be/vz3KlzgEFm8?t=6
Stalker – Kukomitzu
https://youtu.be/vz3KlzgEFm8?t=297
♫ Epic Horror Synth Trailer Music ♪♬ - Something Wicked
https://www.youtube.com/watch?v=Zuw_O5MU5CE
[Vaporwave] Stevia Sphere - mint
https://www.youtube.com/watch?v=ykT3wtSCpzE
\"Midnight, the Stars and You\"
https://www.youtube.com/watch?v=-fN-Xjpd-qE
My last roadtrip - Kukomitzu
https://youtu.be/vz3KlzgEFm8?t=597
Outro music:
Gothic 3 - Geldern Night
https://www.youtube.com/watch?v=wCtV4DYZkK0" -metadata "purl=https://www.bitchute.com/video/7KOApju0sI1E/" -metadata "artist=Chass" "file:4chan threads - _x_ - The Desolate Towns Phenomenon.temp.mp4"
ERROR:   Stream #0:2 -> #0:2 (copy)
Traceback (most recent call last):
  File "youtube_dlc\YoutubeDL.py", line 2159, in post_process
  File "youtube_dlc\postprocessor\ffmpeg.py", line 532, in run
  File "youtube_dlc\postprocessor\ffmpeg.py", line 235, in run_ffmpeg_multiple_files
youtube_dlc.postprocessor.ffmpeg.FFmpegPostProcessorError:   Stream #0:2 -> #0:2 (copy)

Description

Commit d03cfdc introduced -map 0 to the FFmpeg post-processor to copy all streams. Unfortunately, the BitChute MP4 timecode stream I've run into here has an apparently invalid tag and can't be copied. If I type the ffmpeg command without -map 0 it works fine since it simply ignores the extra unsupported stream. The option was added to ensure that extra streams are preserved, but in this particular case, it's causing a muxing failure due to an unsupported extra stream.

[pukkandan]

This doesn't seem to be an issue with yt-dlc. Other bitchute videos work fine. This particular video has a broken data stream. You can fix it by using --postprocessor-args "-map -0:d?"

[jbruchon]

This happens with multiple BitChute videos. It is not isolated to that single one.

[pukkandan]

Do you have any ideas how to fix this? I dont want to throw away the data streams of all videos just because of a few videos

[jbruchon]

Is there a way to tell ffmpeg to ignore unsupported streams instead of throwing an error?

[jbruchon]

Found it: -ignore_unknown says "Ignore input streams with unknown type instead of failing if copying such streams is attempted." Closing PR incoming. Edit: well that didn't work. Edit 2: but #9 does!

[pukkandan]

I had also tried -ignore_unknown but didnt know about -dn. Thanks for the fix. I will merge it asap

[jbruchon]

Seems -dn is the inverse of -map 0:d for a stream.