I went through and rechecked that all the keyframes were off, which they are. However I’ve noticed a second possible clue:
Although rendering the entire clip causes the boxes to appear in different positions, when I highlight only the problematic clip and select ‘preview in player’ the problem dissapears. This is the case regardless of whether I select NTSC DV Widesceen OR Pal DV Widescreen.
But whatever setting I choose when rendering the entire project, the problem always occurs.
Another clue: When I change the Project Video Properties to 720×480, the boxes in the preview screen move to where they appear in the full rendering.
So to sum up
– My project video settings are: 720×576
– When I PREVIEW using either 720×576 *or* 720×480, the result concurs with the arrangement on the preview screen (576).
– But when I RENDER the whole project, regardless of whether I do it as NTSC (480) or Pal (576) the result always appear in the wrong place, i.e. appears as 720×480.
All keyframes are deselected, and the fact that the placement of the boxes precisely matches the preview screen *when* the preview settings are altered to 720×480 suggests to me that it is the aspect ratio.
Any idea what’s going on??