Is this a QT or iMovie bug?

[BB1970]

I’m normally an exclusive iPadOS user, but recently started using a Mac again. I ran into an issue I never had on the iPad and was wondering if it’s a bug.
Essentially, if you have a video and pop it into QuickTime and extract the audio, then place that audio onto the same video in iMovie, the audio is out of sync. Why? It’s literally the exact audio from the same source, not from a separate recorder etc.
On my iPad, I would extract that audio using a shortcut, place it in a DAW and eq etc and then reinsert into iMovie and it’s never a sync problem.
It’s literally the issue that’s preventing me from switching back to Mac.
Any ideas?

 

[HobeSoundDarryl]

Guess is that the audio extraction option in QuickTime trims some audio silence at the beginning, so that the resulting audio file doesn't have many seconds of silence at the beginning. While I don't use iMovie much, if this was an issue in FCPX, I'd just adjust the position of the audio file in the timeline to get it back in sync with the video.

Why would you want to break the audio out and then add it back again? Why not just leave it already synched and edit the video? Whatever the reason, perhaps do this within iMovie instead of Quicktime? Select the clip from which you want to split the audio, "detach audio", and then edit the audio separately without affecting the video. If you need it as an audio file, export just the audio from iMovie and it should preserve the timing.

 

[BB1970]

Guess is that the audio extraction option in QuickTime trims some audio silence at the beginning, so that the resulting audio file doesn't have many seconds of silence at the beginning. While I don't use iMovie much, if this was an issue in FCPX, I'd just adjust the position of the audio file in the timeline to get it back in sync with the video.

Why would you want to break the audio out and then add it back again? Why not just leave it already synched and edit the video? Whatever the reason, perhaps do this within iMovie instead of Quicktime? Select the clip from which you want to split the audio, "detach audio", and then edit the audio separately without affecting the video. If you need it as an audio file, export just the audio from iMovie and it should preserve the timing.

I’ll explore this option. The reason for the extraction was to edit the audio in a daw (add compression, eq, other things) and then reimport. Most of the videos I make are music based acts etc.
Thnx for the suggestion! I’ll give it a go.

 

[HobeSoundDarryl]

I believe that will work for you. Good luck.

I should add that if the DAW is Logic Pro, you can import movies into it. Garage Band can have one movie track too.

 

[BB1970]

I believe that will work for you. Good luck.

I should add that if the DAW is Logic Pro, you can import movies into it. Garage Band can have one movie track too.

It worked! Huzzah. Thnx for the suggestion! The daw I use is on my iPhone (using Airdrop). I’m just used to the iOS workflow. But good info nonetheless.
Thnx again