add post process to make timecode subtitles

[dericed]

requires the next ffmpeg-ma version with matroska timecode captures

[retokromer]

matroska > Matroska ?
like in line 2958

[dericed]

thx, i dropped that commit

[dericed]

testing requires a daily build of mediainfo so til there's a new release run brew uninstall --ignore-dependencies mediainfo and then install from https://old.mediaarea.net/download/snapshots/binary/mediainfo/

and also run brew install timecodexml

[dericed]

Ready for testing and review, but we need to wait on a mediainfo release to merge. There's also an issue in ffmpeg-ma where it will only detect timecode when timecode_format is set to 'all'. @JeromeMartinez and I are working on this, for now please test with timecode set to all.

[iamdamosuzuki]

I tested this PR and it worked, however there were a few dependencies. I had to install the latest daily build of mediainfo as suggested by @dericed. I also had to manually install timecodexml2webvtt by running brew install timecodexml. Also, I had to use the all option for timecode capture and had to use the 2 stereo channels options for Audio capture. With those dependencies in place I was able to capture an FFV1/MKV file with embedded timecode. I've attached the timecode created from the file using mediainfo. In it you can see that the timecode is discontinuous, it jumps forward after about 20 seconds. You can this in the timecodeXML I've attached. Great job!!

20260116_test_08.timecode.xml

[dericed]

Still needs brew install timecodexml and a recent mediainfo. But this will capture all discovered timecode when capturing to mkv (and make a vtt file that displays the timecode in VLC and other players that use sidecar subs). When not using mkv it will still write the *frame_timecode.txt file but with the first discovered timecode. The option to select which timecode to capture is now removed in favor of getting all (to mkv) or first-seen (in non-mkv).