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Audio and Video - Speed not matching - How to Sync?

New Here ,
Feb 07, 2020

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Hi!

 

I have an old mpg-video file where video and audio is out of sync.

After trying to fix this with moving the video relative to the audio I noticed that it doesn't work.

If the sync is perfect in the beginning, it's out of sync at the end.

And the other way around.

So the speed of audio and video simply are not perfectly the same, which adds up to a few seconds after one hour.

Is there a simple way to fix this?

I would link to align two ore more points and then premiere should match the speed of audio and video.

 

Thanks,

 Steven

Adobe Community Professional
Correct answer by Richard M Knight | Adobe Community Professional

Find a sync point on the audio and the video both at the start and end of the clips. Trim both tracks to these sync points and align the start points. Select the rate stretch tool, shortcut 'R', select only the audio track and drag the out point to match the out point of the video. Go back to the normal cursor, shortcut 'V' you can then drag the the clip out to full length.

This will only work if the audio and video are drifting by a constant amount.

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Audio and Video - Speed not matching - How to Sync?

New Here ,
Feb 07, 2020

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Hi!

 

I have an old mpg-video file where video and audio is out of sync.

After trying to fix this with moving the video relative to the audio I noticed that it doesn't work.

If the sync is perfect in the beginning, it's out of sync at the end.

And the other way around.

So the speed of audio and video simply are not perfectly the same, which adds up to a few seconds after one hour.

Is there a simple way to fix this?

I would link to align two ore more points and then premiere should match the speed of audio and video.

 

Thanks,

 Steven

Adobe Community Professional
Correct answer by Richard M Knight | Adobe Community Professional

Find a sync point on the audio and the video both at the start and end of the clips. Trim both tracks to these sync points and align the start points. Select the rate stretch tool, shortcut 'R', select only the audio track and drag the out point to match the out point of the video. Go back to the normal cursor, shortcut 'V' you can then drag the the clip out to full length.

This will only work if the audio and video are drifting by a constant amount.

Topics

Audio, How to

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Adobe Employee ,
Feb 07, 2020

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Hi Steven

Synchronization can be affected if the audio and video are not camera captured or if the clip is with variable frame rate. Could you share more details?

  • What is the source(camera) of the media files?
  • Which version of Adobe Premiere Pro are you using?

Additionaly, please take a look at this article: https://community.adobe.com/t5/premiere-pro/faq-how-to-work-with-variable-frame-rate-vfr-media-in-pr...

 

Let us know if it helps.

Thanks,

Shivangi

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New Here ,
Feb 07, 2020

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Hi Shivangi!

 

The file is from capturing an old VHS tape using an USB-Video-Grabber.

The file format in .mpg - it's MPEG2 valid for buring a DVD.

I want to use Premiere to convert it to .MP4 however.

The properties-dialog doen't show "variable frame rate".

 

Thanks!

 Steven

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Adobe Community Professional ,
Feb 07, 2020

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Find a sync point on the audio and the video both at the start and end of the clips. Trim both tracks to these sync points and align the start points. Select the rate stretch tool, shortcut 'R', select only the audio track and drag the out point to match the out point of the video. Go back to the normal cursor, shortcut 'V' you can then drag the the clip out to full length.

This will only work if the audio and video are drifting by a constant amount.

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New Here ,
Feb 15, 2020

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Hi Richard,

This completely solved my problem - thank you very much!

I took some time to get it perfectly right.

The problem itself is quite annoing and I still don't know the cause.

But at least there is a way to fix it.

 

Thanks again,

  Steven

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Community Beginner ,
Jul 09, 2020

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Hi

Is there anyone who can explain this reply in more detail? I am a total beginner at Premiere Pro and I don't understand this answer so any help would be gratefully received (ie, I don't know how to find the end sync point, because if I adjust the audio track so it syncs at the beginning, it doesn't sync at the end, so how can I trim the tracks so that the start AND end points sync? etc)

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Adobe Community Professional ,
Jul 09, 2020

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The step you might be missing is selecting the 'rate stretch' tool shortcut 'R' this will leave the start point where it is and will make the audio track longer or shorter to match the video length.

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