I can scrub my video as normal, but cannot playback for editing. The audio plays back fine. The clips are .avi's from a consumer camera. I do not know the make/model, these clips were given to me to edit.
I have loaded other clips that I have shot and compared their properties. The only difference seems to be my pixel depth on the "bad" clip is 0.
Just one clip is having this issue? Run it through a program called Gspot. It will analyze the file and let you know if anything is wrong with it.
The first thing that I would do is run the problem files through the freeware utility, G-Spot. It will give you the full details of those files.
Your problem will likely be contained in that info.