CBaseAllocator: only set m_bCommited after actually allocating buffers
dxva2n: only re-create decoder if currently commited
Remove bitrate check for video codecs (except for RM)

Instead always prefer the first track with the highest resolution.
Implement dynamic extradata update for Vorbis
Update ffmpeg for MKV ordered chapter optimizations
Another pass on ffmpeg MKV opening tweaks
Add MXF as a selectable format to the installer
Update ffmpeg for H.264 RGB detection fix

Fixes issue 350
Parse FLAC extradata to extract the channel mask metadata

Fixes the first part of issue 342
Fix build
Update ffmpeg for FLAC extradata fix

Fixes issue 342