LAV Splitter API: Add a function to get the list of available formats

Signed-off-by: Hendrik Leppkes <h.leppkes@gmail.com>
Update ffmpeg for fraps cfr output
Handle Default-Stream flags on video streams properly
GetFormats: Add missing parenthesis in ca01976e1997.

The loop was previously working only for the first iteration.

Signed-off-by: Hendrik Leppkes <h.leppkes@gmail.com>
Testing side-by-side assemblies.