Using MS 4, I just put a single frame, including audio, on the timeline. The audio's displays OK but the video shows and plays as a 5 second clip! MS4 treats it as a still. I found another single frame clip and it did the same.

I tried again with MS 3, and it wouldn't even put the clips on the timeline. That's good - it means we're not going to see 5 second stills popping up when we re-edit MS3 projects in MS4.

BTW, I don't make a habit of using single frame video clips - it was just something I picked at random!

Ian G.