Remuxed MP4 Files from OBS Cause Stuttering in Adobe Premiere Pro — Original MKV Works Fine

Operating System Info

Windows 11

Other OS

No response

OBS Studio Version

31.0.3

OBS Studio Version (Other)

No response

OBS Studio Log URL

https://obsproject.com/logs/wNwtcTbrEMliUvki

OBS Studio Crash Log URL

No response

Expected Behavior

After remuxing an MKV file to MP4 using OBS’s built-in remux feature, the resulting MP4 should function identically to the MKV in editing software. Specifically, playback at 2x or 4x speed in Adobe Premiere Pro should remain smooth, just like with the original MKV.

Current Behavior

Remuxed MP4s stutter heavily during high-speed playback (2x or 4x) in Adobe Premiere Pro, even though the original MKV files play smoothly. The issue is not present when using the same remuxed MP4s in DaVinci Resolve, which handles them without stuttering. This confirms the video and audio streams themselves are not corrupt — the issue seems to stem from how the remuxed MP4 container is interpreted by Premiere.

Steps to Reproduce

1. Record in OBS using NVENC (or x264) with MKV as the container.

2. Use OBS’s “Remux Recording” function to convert MKV to MP4.

3. Import both the MKV and MP4 into Adobe Premiere Pro.

4. Play each file at 2x or 4x speed.

5. Observe: MKV plays smoothly, remuxed MP4 stutters repeatedly.

Anything else we should know?

This issue has been tested across:

• NVENC and x264 encoders

• MP4 and MOV containers

• Adobe Premiere Pro and DaVinci Resolve

Only remuxed MP4s from OBS stutter in Premiere Pro at high speeds.

• Original MKVs (both NVENC and x264) play fine

• Remuxed MP4s stutter only in Premiere

• DaVinci Resolve plays all versions without issues

This strongly suggests a container-level compatibility issue introduced during OBS remuxing that trips up Premiere, but not other editors.

The issue names OBS's Remux Recording function, the supplied OBS log, and comparison files in MKV, MP4, and MOV formats, but no source file or test. Start by reproducing the Premiere Pro 2x/4x playback comparison and inspecting the remuxed outputs; done means isolating a reproducible remux compatibility failure and documenting a verified fix or regression check.