Ah – that might explain why Quicktime was happy to play it 16:9 but not other media players.
I’m going to burn the video to DVD using iDVD for brevity’s sake. I think I’ll have to export with custom settings.
Given that all my source material was true 16:9 (DV), is there a way of avoiding the anamorphic thing and just having a true 16:9 DV sequence?