Here's my situation: I have a .mov file which i want to place inside that red solid layer [1]. I hold option and drag on top of the solid layer and it is swapped in the timeline. However, it gets placed at the very end of the comp as a single-frame snippet on the 6f mark, rather than at the beginning for the full duration of the video [2]. If I try to drag my video to the beginning of the timeline with my cursor, the track doesn't budge. Any idea why I might be experiencing these issues?