Different Fileformat (MKV)?

[ZeroWalker]

Is it possible for you to change the muxing to MKV instead of MP4?

 

[Boildown]

This seems like one of the dozens of similar questions on this forum that is always answered in the same way: "in the re-write, not before."

 

[ZeroWalker]

Oh, my bad, didn't actually search about it.

Pretty much understood that it was for the Rewrite, but thought it couldn't hurt to try.
I looked at the code myself and thought i could perhaps find some Copy Paste for a MKV filemux, but the code just for MP4 was madness itself, no way i could get into that;P