I've been getting same issue, here's what I've noticed so far... (posted on another thread with same problem)
I started getting this, I'm assuming after latest camera update. I use Samsung's native camera which I was happy with. I record a lot of videos and usually, I trim them straight away in the camera's editor. For the last couple of weeks or so, the first 2.14ms disappear once I hit edit button or try to edit it in any way. If I don't try to edit and just upload to my computer, when I play it, it just plays those first 2.14ms super fast then it syncs with sound. As soon as I open in an editor (i.e. Adobe premiere) sound and video are out of sync again, first 2.14ms just aren't there anymore. I haven't changed anything, but there must have been some upgrade that is causing this?
If I record something and play it through the camera it's in sync, but as I soon as I press the edit button in the camera app itself, the sound lags behind and first 2.14ms seem to get deleted...
I don't know if it's related or not but this also coincided with the camera 'click' sound suddenly no longer working. So I could take silent photos - which was nice, but previously impossible to stop the clicking sound, and then suddenly it was just gone.
NOTE I have a Galaxy S8 - but when I searched this thread appeared.
EDIT: Issue isn't there when I use Open Camera then edit via Samsung's Gallery - so it looks like the issue is with Samsung's native camera, I have version 9.0.01.78 which is latest version on 18 July 2021. If there was a way I could revert to earlier release I would!
