[Aldo Prada olius]

I found several black frames in an edition, due to capture issues. I did a visual check, expanding to the largest size the frames and the height of the filmstrip and activating “show video filmstrips” in the timeline view options, to view every frame in the filmstrip. Clicking on the scroll bar will advance the timeline the full width of the screen, in mine this is some 30/32 frames. The black frames will be evident in the filmstrip (if you check it actually watching the movie, you will miss some of them).