Can I be missing some mpeg-4 codec that would cause horrendous sluggish playback (stutter/freeze/lag etc.)? I am having horrible sluggish playback with P2 HVX footage -- MXF files. (720p 24p). (Fully
edited movie, black and white effect added, all rendered, green line.) However, a new clue arose. I exported a 77 MB complete version of the film (17 minutes) and it plays back in ...