Process/cut proprietary tracks

[mifi]

LosslessCut is only able to cut the tracks that ffmpeg has implemented support for. Currently only these:

  'video',
  'audio',
  'subtitle',
  'attachment',

lossless-cut/src/util/streams.js

Line 2 in 39dc42a

const defaultProcessedCodecTypes = [

Other tracks (notably data) will be disabled by default. The user can enable them but if trying to cut, ffmpeg will probably copy them as-is without cutting. this will cause the duration of the output file to be incorrect. (not according to the cuts).

I'm not sure how one would implement such cutting.

GoPro gpmd (GPMF?) format #1428

https://community.gopro.com/s/question/0D53b00008BtEHHCA3/gopro-telemetry-resources-software

[mvitr]

Does this maybe help somehow? https://www.reddit.com/r/ffmpeg/comments/15vqj00/saving_gopros_tcd_time_code_stream/

ffmpeg -i Original.MP4 -ss 1:30 -to 2:00 -tag:d:1 'gpmd' -copy_unknown -map_metadata 0 -c copy -map 0:u Output.MP4

ffmpeg -i Original.MP4 -ss 1:30 -to 2:00 -tag:d:1 'gpmd' -copy_unknown -map_metadata 0 -c copy -map 0:v -map 0:a -map 0:d? Output.MP4

[mifi]

I think -map 0:d? would be the same as adding data to defaultProcessedCodecTypes. This would cause the stream(s) to be copied but not cut, causing problems described above

[AbsoBarrier]

So do we have any way to drop the data track with Losslesscut.
Also the chapters, I don't know if it is stored in the data track.
I am really new to ffmpeg and I do not know how to let my output contain only video and audio the two tracks without chapters stored.

[mifi]

@AbsoBarrier data tracks will be dropped by default.

[AbsoBarrier]

@AbsoBarrier data tracks will be dropped by default.

There is a track created by bin_data txt connected with the video track, no matter how I deal with the output, it would survive, I tried export the video track and get a mp4 file contains 1/2 tracks.

[mifi]

even if you go to the tracks panel and disable the track, it gets included? don't know how to fix that, but maybe you can share some info about the file in a new issue https://github.com/mifi/lossless-cut/issues/new?assignees=&labels=&projects=&template=1-file-issue.yml

[AbsoBarrier]

even if you go to the tracks panel and disable the track, it gets included? don't know how to fix that, but maybe you can share some info about the file in a new issue https://github.com/mifi/lossless-cut/issues/new?assignees=&labels=&projects=&template=1-file-issue.yml

Alright, I don't know why but mergecuts destroyed the chapters and the data track. I don't know why but I swear I was really troubled by these two.