[FFmpeg-devel] [PATCH] VFW capture support

[Ramiro Polla]

Hello,

Attached patch adds VFW capture support for Windows. Tested on MinGW and 
IIRC V?ctor said once it kind of worked on Cygwin.

Issues:
- I tried to make the code look as much as possible as the code given in 
MSDN, so that means I used "LRESULT CALLBACK" without even knowing what 
it does or if it can be removed. I have also used "var == FALSE" and 
"var == NULL" checks. I prefer that instead of "!var" just to be closer 
to MSDN.
- Some defines are missing from MinGW include headers. I'll try to get 
them integrated into MinGW. After that, we can properly check for MinGW 
versions to define them, or just plain remove the definitions here and 
require a newer version of MinGW. In the meantime, I think there's no 
problem in defining them here.
- If no "-r" parameter is given, way too many frames are read. I thought 
FFmpeg was supposed to read the first few frames and decide the rate 
based on that. The capture blocks, so the timestamps are correct, and if 
some frames were captured and then the frame rate calculated, it should 
find the correct frame rate, right?

Please review.

Ramiro Polla
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