[MPlayer-dev-eng] Regarding x264 decoding optimizations

[Mathieu Monnier]

FFmpeg's devs know to efficienctly thread ffh264 (decoding several 
frames in parallel). They just lack the time.
> Another trick I thought of is that decoding non-ref
> frames can be skipped automatically if facing frame
> dropping. The skipped decode should save enough time
> to catch up. This should provide gradual degradation
> to playback framerate rather than long jerks. I looked
> to me like this is not being done at the moment,
> pardon me if I am wrong.
>   
It's sound on paper, but it won't work. The most complicated part (to 
decode) in a video are the highest bitrate part, and in those, there 
usually aren't any bframe (since their inherent complexity makes it 
unefficient to add bframes).

Regards,

Mathieu