Having audio desync issues

[Fiona30833879qdkg]

From what I have read it is most likely a VFR issue since the desyncing is occurring in mp4s that have come from OBS. I have checked and OBS itself is not the problem so I followed this guide FAQ: How to work with Variable Frame Rate (VFR) me... - Adobe Community - 10348229 but none of the media is marked as having a variable frame rate and the effect controls do not show the MPEG Source settings.

How do I fix this?

[MyerPj]

You can use the free MediaInfo program to get info on your clips. Get the program from the link below and using the 'Tree' view post a screenshot of your clip info: https://mediaarea.net/en/MediaInfo/Download

Use Shutter Encoder to convert the files (before editing) to constant frame rate. Maybe try ProRes LT or even ProRes PROXY format within Shutter Encoder for easy to edit formats with 'better' files size.
https://www.shutterencoder.com/en/

[Fiona30833879qdkg]

MediaInfo says that the frame rate is constant, but the audio framerate is different to the video. This info is identical for all of the files I am using that are affected by the desync. Is any of this information helpful?

[PaulMurphy]

Try this:

1. Duplicate your clip in the Project panel
2. Change the duplicate's frame rate to the audio frame rate listed in MediaInfo
3. Drag the audio of the duplicate clip into a timeline with your original video
   
   Does it stay in sync?

[Fiona30833879qdkg]

I did this by right clicking the in the Project panel and choosing Modify > Interpret Footage and then assuming the framerate to be 46.875, but that just slowed the entire video down, which carried over to the audio on the timeline. I also tried importing the clips into a completely new project but the problem persisted and the audio is still offset by about 10 frames.

[Fiona30833879qdkg]

I tried using Shutter Encoder but that didn't fix the issue

[Remote Index]

Hello Fiona etc.,

This sounds like a very strange problem!

When you say re-encoding via Shutter "didn't fix the issue", what results did you get? What does Media Info show for the newly encoded clip? How does it compare to the original?

I might suggest you may need to transcode to separate audio and video files for each clip. If you test this method (transcode video only to Pro Res for example, and audio only to WAV or AIFF) and sync in Premiere Pro, does that solve your problem?

Alternately, are there any ways you can try different export settings from OBS to get clips out of there? Also, is there any help available re: this issue in the OBS forum?

R.

[PaulMurphy]

When you say OBS is not the problem, do you mean your audio plays in sync in OBS?

[Fiona30833879qdkg]

Yes. The files also plays correctly in the media player. It is only when they are imported into Premiere that they get desynced, and as far as I can tell it only happens with large files.

[Peru Bob]

Try Preferences > Audio Hardware and set Input to None.

[Fiona30833879qdkg]

I tried that but it didn't work

[Kevin-Monahan]

Hi @Fiona30833879qdkg

Thanks for the note. I can understand the issue. The file you are having us inspect is over four hours long. That is at the heart of the problem. Transcoding to an editing codec is untenable for such a file, so did you encode them back to H.264? That may not be the best solution. Sorry for the frustration. It would be great to get all your information in order to help you better: How do I write a bug report?

I suggest recording these lengthy streams with a hardware-based recorder so that you do not encounter these issues in the future. If that is impossible, you may want to explore other settings and test with such lengthy files.

I hope we can help you find a better workflow.

Thanks,
Kevin