I have a main video and audio track which was in timeline 1 track and wanted to add a small snippet video into it.
In experimenting what to do I ended up with the main track on timeline 2 instead, so I added the snippet video initially into timeline 1.
Playing back it didnt show, undeterred I thought ok I will just insert it and overwrite it into a portion of the main video
So I dragged it down and got an option to Overlay come up in a box so I selected that and it worked fine, and I had a good result of the 2 videos combined, starting with the timeline 1, and in due course fading to the timeline 2 video, with a bit of the time showing both together which looked good
Thinking this was a good result, I tried the same with a second video snippet BUT this time I never got the option to overlay, I had the overwrite, insert and move all clips and something else.
Just wondering how I got different results doing the same initial course of actions