video editing in c++

Hello,

I'd appreciate your suggestions about this drafted application for video
editing. It is just the first idea, it is working but can be improved a lot!
Find the code attached below. The main goal is to play an avi, averlap an
annotation/image and save the new avi.

Thank you very much for your help and comments :-)

http://pastebin.com/f76e663e6

Just some clarification...

Just some clarification...

The first issue I noticed is related to the size of the new edited avi
saved, that is too big as compared to the original one. I assume that is due
to some wrong settings in my code. But also anything else about performance
and quality is welcome! :-)

A second question I would ask is about overlapping an image on the bitmaps
of the api. In my code the avi is played and recaptured one bitmap at a time.
I wonder whether you could directly overlap an image on the bitmaps without
playing/recapturing.

Eventually a third point could be the use of better library than shlwapi.lib
or different avi_utils...