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wuigi
Participant
June 16, 2020
Answered

Audio-video sync issue in Premiere Pro CC 2020 (export file)

  • June 16, 2020
  • 2 replies
  • 13876 views

Need help. I'm having sync issues in Premiere Pro CC 2020

Final output: audio and video not synced (h.264)

-the final output has normal audio speed but the video playback speed has been accelerated or in some instances, stuck in one frame
-already tried to render with Adobe Media Encoder
-rendered the timeline to green (in to out)
-already tried other formats (same issue)
-cleared Media cache
-tried to uninstall and reinstall Pr (now, the video's playback/preview has been accelerated too 

 

If anyone knows how to fix this, please help! Thank you!

This topic has been closed for replies.
Correct answer wuigi

Thank you! The playback in Premiere Pro's back to normal speed.

 

For the audio-video sync issue on the export file, it was FPS source-output mismatch. The root of the problem was the fps of the raw video file, it was shot in 15fps that's why it ends up like a timelapse video when rendered. I had to modify the footage to 29.97fps (Modify > Interpret Footage > Assume frame rate to 29.97fps) then set the speed/duration to 50%. It worked. Finally.

2 replies

haihovu
haihovu
Participant
June 21, 2020

Seemed my problem was in the Radeon driver used. The one that came with Windows 10 appeared to cause this rendering problem, when I downloaded and installed the latest AMD's dirvers, the GPU encoding produced correct the frame rates.

    K
    kmart23
    Participant
    August 10, 2020

    Downloading the latest Radeon driver worked for me too. Thanks!

    D
    defaultw68g47munpwl
    Participant
    January 21, 2021

    How do I download a Radeon Driver?

     

    I've spent hours trying to figure out why my audio and video aren't syncing after exporting in Premiere, and I'm incredibly frustrated. I've tried about 10 different things people in this community have suggested and none seem to work. Any ideas of what might help?

     

    P
    Community Expert
    Phillip HarveyCommunity Expert
    Community Expert
    June 17, 2020

    For video playback accelerated while working in Premiere Pro, it's typically associated with a discrepancy in audio sample rates on your system/Premiere. Go to Preferences>Audio Hardware, and set your input to No Input.

     

    As far as your export sync issues, the most pressing question is what kind of media are you working with? If you're working with phone or screen capture then your issue could be related to VFR: https://www.reddit.com/r/VideoEditing/wiki/faq/vfr

     

    If you've recently updated to 14.2, you can try disabling the setting for hardware encoding in the Encoding portion of the Video tab on Export.

     

      W
      wuigiAuthorCorrect answer
      Participant
      June 18, 2020

      Thank you! The playback in Premiere Pro's back to normal speed.

       

      For the audio-video sync issue on the export file, it was FPS source-output mismatch. The root of the problem was the fps of the raw video file, it was shot in 15fps that's why it ends up like a timelapse video when rendered. I had to modify the footage to 29.97fps (Modify > Interpret Footage > Assume frame rate to 29.97fps) then set the speed/duration to 50%. It worked. Finally.

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