I apologize for the lack of information; I am new to Blender and am unsure why this is happening. I recently started using Blender for video editing as I wanted an open-source video editor. In general, it does an amazing job. I keep running into a big issue with is causing me not to use it, though.
When editing clips, sometimes, for no reason, Blender moves the audio track from the position where I clipped it. For example, if I have a video where someone is talking, and I clip just one scene from their speech and then edit other clips and come back to that scene, the audio would have shifted to a different point in the video where it was split.
I have no idea why this is happening, and it is driving me crazy. I just spent all day on something and didn't even want to restart as this is the second time it has done this. Does anyone know what may be causing this? I am on Blender 2.90. I do have av-sync on.
This could be how I am using, but I am just so new to Blender I have no idea.
SOLUTION: Frame rate! When I was importing video clips from different sources it skewed the frame rate, use handbrake to fix it.