I get numerous emails about this, so here's a screencast.
The colors are a bit funky because I made the mistake of capturing to YV12 with a terrible colorspace conversion algorithm.
URL to written instructions: libav.org/platform.html#Microsoft-Visual-C_002b_002b-or-Intel-C_002b_002b-Compiler-for-Windows
Loading more stuff…
Hmm…it looks like things are taking a while to load. Try again?