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Recording problems causing audio syncing problems

New Here ,
Apr 25, 2023 Apr 25, 2023

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I recording video into an iphone and audio in a separate shuresm7b mic. When I go to sync it is not quite matching. 

 

I click on "synchronization" in premier. Then it attempts to sync but I get a failure message. It states that the files do not match. Am I doing something wrong when I actually record? Are the speeds incorrect or something?

 

I manually did the syncing and I could get it quite close to syncing. But then by the end of the video it was way out of sync.

 

Also, I should say that this is a two person video podcast. Maybe it's the "stereo" that is a problem?

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Audio , Editing

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correct answers 1 Correct answer

LEGEND , Apr 25, 2023 Apr 25, 2023

The iPhone video is not recorded at a constant frame rate, but the audio is. That's the problem.

 

You would maybe be best served by using the free utility app ShutterEncoder to convert the video from VFR (variable framerate) to CFR (constant framerate).

 

Then the matching will work.

 

Neil

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LEGEND ,
Apr 25, 2023 Apr 25, 2023

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The iPhone video is not recorded at a constant frame rate, but the audio is. That's the problem.

 

You would maybe be best served by using the free utility app ShutterEncoder to convert the video from VFR (variable framerate) to CFR (constant framerate).

 

Then the matching will work.

 

Neil

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New Here ,
Apr 25, 2023 Apr 25, 2023

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Thanks! That makes a lot of sense.

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Participant ,
Sep 28, 2024 Sep 28, 2024

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I am having a similar issue.  How can I find out if the video and audio are each recorded at VFR or CFR?

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LEGEND ,
Sep 28, 2024 Sep 28, 2024

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The audio trackis always straight time recording. They only juice the number of frames recorded per second.

 

Quite often, the best way is by viewing file data via MediaInfo, a free utility app.

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