Preserve 360° metadata for mp4? Only works with remuxing into mkv

[1alien1]

The fewer issues I have to read, the more new features I will have time to implement, so I ask that you please try these things first

• [X] Check out all the menus and keyboard shortcuts. Maybe the feature already exists?
• [X] Try with the newest version from GitHub
• [X] Read the documentation and FAQ, Known issues, Troubleshooting to see if the feature already exists
• [X] See if someone already suggested this under Issues or Discussions

Description

I cannot get remuxing/merging of several 360° mp4 clips into one mp4 clip working while preserving the 360° metadata to view it in vlc or re-open it with the insta360 studio. It only works when remuxing into mkv file which in turn cannot be opened anymore in insta360 studio. Am I doing something wrong or is it not possible without re-encode?

[mifi]

See #1027 #169