video editing

[1]

Can anyone offer any suggestions on video editing?

Ideally I would be able to edit each frame of a quick time type movie that I
would get off one of those cheapy I-Cams.

But, it seems that the format, sort of like MPEG3 or something, doesn't work
with frames, or snapshots.  It seems to use smaller bits of information.

Any pointers would gratefully send me on my way towards euphoric geekhood.
Thank you.