Editing AVI file with virtual dub

[ukcalibrauk]

I am trying to cut off the trailers from the beginning of an AVI movie, but following your example, I can here the sound but can't see any video. I've managed to `guess` where the film starts but this can't be right

Help please

Calibra

[ukcalibrauk]

I just get two black frames whilst trying to edit an AVI file

Please help someone

I'm using Virtualdub, I can hear the sound only

Thanks