When I import 1080 30 FPS AVI file intermittent blank frames appear in the playback in Hitfilm 4 Express. It appears randomly as a series of 1-3 black flashes. It's in the original media, carries over through compositing and becomes part of the final rendered video export.
When I play the original source AVI file in VLC or Media Player or VideoPad, and go frame by frame, the blank frames are not present. They only appear in Hitfilm. However, after Hitfilm exports the video, it becomes permanently part of the file and it can be seen in all the other video players.
Anybody have a clue what this is?