2020-12-19, 18:45
Also someone on the Kodi team did contact the ffmpeg devs, they suggested what Plex seem to have done for mkv was a copy & paste of some parts that were added to the ffmpeg code for mp4 resulting in code duplication, hence they said what submitted to us is not in a state that could be submitted to their upstream git.
[edit] As far as I can tell the ffmpeg changes for DV in mp4 were https://github.com/FFmpeg/FFmpeg/commit/...bb9b59cf9f
[edit] As far as I can tell the ffmpeg changes for DV in mp4 were https://github.com/FFmpeg/FFmpeg/commit/...bb9b59cf9f