I think simply my code is wrong, could be an easy fix stackoverflow thread, screencapturing with gdigrab, encoder producing empty atoms..

[JanssonTheBest]

More info at:
https://stackoverflow.com/questions/78606848/ffmpeg-autogen-issue-with-zero-sized-atom-boxes-in-mp4-output

[Ruslan-B]

I don't transfer to questions. Not exactly related to questions but good trend. As for me surprised how many you can do with api. besides we still have some problems with complex structures and they are platform based - means depends from OS and the way you compile binaries.