Cleanup request_sample_format entries, most are no longer needed.
Remove setting CODEC_FLAG_TRUNCATED for audio codecs.

No audio codecs actually use this flag.
Factor AVSubtitleRect handling into a seperate function
Fix handling of timings for subtitle frames visible only for half-frames
Support Alpha fades in DVD subtitles
Log start/stop times of DVD HLI events
Obey Start/End time in DVD HLI events.

Fixes issue 292.
Skip zero-length subtitles
Only show subs which stop after the middle of the frame, to avoid duplicate subs in some situations.
Add support for H.264 in PMP (Annex B format)
Make subtitle references ref-counted to ensure the memory remains valid while its still used.

Fixes issue 299.
Remove debug message
Properly delete subtitle rects created for DVD HLIs
cuvid: fix decoding of non-mod16 in native cuvid mode

After the previous fix, the image corruption was resolved,
however the decoder scaled the cropped image to the un-cropped
size and then cropped again. Instead, don't tell the CUVID decoder
about the cropping at all, and handle it internally.
Fix H.264 timestamps in PMP
Re-organize H.264 timestamp rules
Call static initializers from the DllEntryPoint
Update ffmpeg
Remove useless mediatype workaround and comments
Improve support for multi-channel AAC in MPEG-TS