Video & Sound out of sync - video delayed

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John Semon

New Member
I'm new to OBS and recently converted from Vimeo to OBS. We are still on a learning curve with OBS but have successfully run livestream for church services for several weeks. In recent weeks, we are having a delay with the video delayed and out of sync with the sound. After a few minutes it may catch up, but not always. Are there any recommendations for adjusting any setting? Any advice would be greatly appreciated.
 
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Lawrence_SoCal

Active Member
Video is much more processing intense than audio, so common for audio to get ahead of video when processed separately (ie video from camera, audio from your mixer).
- Simple solution (which will hinder your flexibility) is to join Audio to Video before reaching OBS Studio. For example, we could plug Audio into our NDI PTZ Cameras
- Audio video sync is a common issue when that follow separate data paths. There are numerous tools to adjust, which for you to use... depends. Personally, I found and like using https://streamgeeks.us/fix-audio-sync-issue-in-obs/ to identify the amount of lag. Ideally the log will be consistent. If lag varies, that can be a sign of an under-powered computer for what you've asked it to do.. (fixing could be a simple optimization, settings, adjustment, removal of some unnecessary background processes, or new PC... depends)

Plenty of us running House of Worship systems here who are happy to help
 
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John Semon

New Member
Lawrence, I try to do my research from home. I can then go to our church and explore how to "fine tune" settings and record daily mass to see if there's any improvement. I'm still on that learning curve to learn more about OBS. I do have a hard copy of the OBS Studio User Guide by Philip Bradley. I also downloaded copies of your suggested reading.
Thanks for your support on this topic. John
Lawrence_SoCal said:
Video is much more processing intense than audio, so common for audio to get ahead of video when processed separately (ie video from camera, audio from your mixer).
- Simple solution (which will hinder your flexibility) is to join Audio to Video before reaching OBS Studio. For example, we could plug Audio into our NDI PTZ Cameras
- Audio video sync is a common issue when that follow separate data paths. There are numerous tools to adjust, which for you to use... depends. Personally, I found and like using https://streamgeeks.us/fix-audio-sync-issue-in-obs/ to identify the amount of lag. Ideally the log will be consistent. If lag varies, that can be a sign of an under-powered computer for what you've asked it to do.. (fixing could be a simple optimization, settings, adjustment, removal of some unnecessary background processes, or new PC... depends)

Plenty of us running House of Worship systems here who are happy to help
Click to expand...
 
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Lawrence_SoCal

Active Member
Was the OBS Studio PC working fine previously, and now has a sync problem, or is this a new setup?
If working previously, was there an OBS Studio version upgrade, or Operating System change (can't call it an upgrade) from 10 to 11?
 
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