Chapter Makers are not saved in Replay Buffer file.

Operating System Info

Other

Other OS

Arch Linux

OBS Studio Version

32.1.2

OBS Studio Version (Other)

No response

OBS Studio Log URL

https://obsproject.com/logs/2I62I14gUdc3cLao

OBS Studio Crash Log URL

No response

Expected Behavior

Chapter Markers created via obs-websocket CreateRecordChapter or via the 'Add Chapter Marker' hotkey should be saved in the Replay Buffer file output.

Current Behavior

Chapter Markers are missing in the video file created using Replay Buffer. Regular recordings correctly have the markers in place.

Steps to Reproduce

1. Start Replay Buffer
2. Start Recording
3. Create a Chapter Marker via the hotkey
4. Save the Replay, and Stop Recording
5. Inspect both the replay and the recorded file and notice the missing marker/chapter in the replay file, meanwhile the marker exists in the regular recording.

Anything else we should know?

Recording Format is set to 'Hybrid MP4'

I also want to make it clear that this issue only happens with videos saved via Replay Buffer. Chapters get saved correctly with regular recordings.

Reproduce the issue with Hybrid MP4 by comparing a Replay Buffer save with a regular recording after creating a marker through CreateRecordChapter or the hotkey. Trace chapter-marker handling through the Replay Buffer save path and verify that the resulting replay file preserves the marker while regular recordings remain unchanged.