There is nothing more frustrating than making one simple mistake during production that can cause so much more work in post-production. One mistake I made recently was recording two separate audio files in two different sample rates – 48,000 Hz and 44,100 Hz.
*Side Note – If, during production, you are told something can be fixed in post-production by someone who isn’t working on the project in post-production, make sure to tell them they need to keep their mouths shut! Be tactful about it though 🙂
How Do Audio Files Become Unsynced?
If you are doing short videos or working with short audio files, sample rate may not be an issue for you. Over long periods of time, however, the audio may go out of sync. 48 kHz and 44.1 kHz may sound the exact same, but one is recording milliseconds slower, which adds up over time.
It’s important to fix these and get them in sync. I believe the audio is just as important as the video, if not more so. No one likes watching a video clip when the mouth isn’t match the words coming out of a person’s mouth, or if a gun blast sound comes a quarter second from the flash.
So, to save yourself time, take a few seconds to make sure your sample rates in your multiple devices recording audio are the same. You can also take precautionary measures, like clapping at the beginning of the recording and clapping again at the end of the recording.
An Easy, Quick Way to Sync Different Sample Rates In Adobe Audition
Follow these steps to get your two audio files with different sample rates (mine are 44,100 Hz and 48,000 Hz) in sync:
- Import your two or more files in to a Multi-track session in Adobe Audition.
- At the beginning, sync up the two clips.
- In the Audition Menu, go to Clip > Stretch > Enable Global Clip Stretching.
- Go to the end of the clips. To the right of the Fade Out box, there should be a little flag there. You’ll get a double arrow with a little stop watch when you are hovered over it.
- Stretch the chosen audio file to match the other audio file.
And there you have it! Instead of having to re-record your audio or having to adjust one of the clips every few minutes to keep sync, you just synced both files in a couple minutes! When you transfer the audio to your sequence in Adobe Premiere or whatever video editing program you use, syncing the audio is extremely easy!
What I Used to Record My Voiceover
I recorded my voiceover for the video on syncing 44,100 Hz and 48,000 Hz audio files directly into Adobe Audition.
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Sync 44100 48000 Sample Rates