[macOS ProRes encoders] Failure when remuxing ProRes-encoded .mkv files

[jcm93]

Operating System Info

Other

Other OS

macOS 13

OBS Studio Version

Other

OBS Studio Version (Other)

https://github.com/obsproject/obs-studio/pull/7010

OBS Studio Log URL

https://obsproject.com/logs/JGDnInK-RCyznln2

OBS Studio Crash Log URL

No response

Expected Behavior

OBS should be able to remux ProRes mkvs.

Current Behavior

The OBS remuxer raises an error 10:56:32.901: media_remux: Error opening output file: Invalid argument when trying to remux any ProRes-encoded MKV to mp4.

Steps to Reproduce

1. Record ProRes file in .mkv container
2. Use remuxer to remux

Anything else we should know?

This is in reference to pull 7010, which is not yet merged, but Pat recommended to open an issue, as with the HEVC tagging issue.