Audio out of sync when recording webcam video with USB mic

Question

I’ve seen older posts that raise this question. Is there a way to fix this issue before post?

There should be a way for the USB mic to be synced with the webcam video so the source MOV file (which merges the USB audio source + webcam video) will be in proper sync when viewing it in QuickTime Player.

If not, is there a way for Premiere to automatically correct this issue by shifting the audio track over by four frames so we don’t have to do it manually on each clip?

Attached are two screen shots showing how the clapboard (slate) sound is off by four frames from the audio spike it generates.

Audio track shows spike indicating the “clap” sound

Slate closes four frames after the sound

Video format: H.264, 4K, 30fps,
Audio format: MP4, AAC, 48000 Hz
Camera: Insta360m Link 2 4K webcam
Mic: Audio-Technica AT2020 USB

John V Knowles · Answer

How are you recording the webcam and audio? It’s possible that there are other solutions on that side of the production, including an option to record video and audio separately. That way Premiere can do a batch multicam sync rather than having to align each clip manually in a sequence (though if the offset was the same each time there’s actually a fast way to do this). Unfortunately I don’t know of any NLE software that offers audio sync offset in the bins before editing; it’s something you would either correct beforehand using a 3rd party tool or using an offset in a sync process.

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