Audio slowly goes out of sync with video in Vegas timeline
I've worked with several versions of Vegas, and I'm currently on Pro 23. Recently it's developed an issue where, with video recorded from OBS, it will slowly over the course of its runtime go out of sync with the audio. I'm not sure why this happens, but it happens with literally anything I record in OBS. Other video files seemingly aren't affected by this issue, though it's possible I've just not had one long enough to see the problem manifest, as the desync happens very slowly and may only become noticeable 20-30 minutes into the footage. The audio was recorded by OBS as well and it is NOT out of sync when the raw footage is watched back in VLC. The audio of the file itself is NOT slowly going out-of-sync with the video, this only manifests inside of Vegas Pro 23.
I've already made sure OBS is up to date and everything. No version changes have occurred with Vegas Pro that would have caused this, I have updates paused specifically to prevent this kind of thing, but here we are. I've confirmed OBS is recording in 44.1KHz and Vegas Pro is using 44.1KHz as well. I guess something must have gotten changed but I can't imagine what it is.
"1." Vegas Pro 23.0 Build 356
2. Windows 11 25H2
3. Yes
4. Radeon RX 6950XT
5. See above.
6. Audio track that is part of a video should stay in sync. It is known good as the raw playback of the recording in VLC or any other video viewer does not replicate the issue.
7. I've researched this but I can't seem to even find anything similar to the issue I'm seeing.
Posted Aug 12, 2026, 3:19 AM UTC