[FFmpeg-devel] [PATCH] Generic part of frame multithreading

Måns Rullgård mans
Wed Aug 20 23:45:04 CEST 2008

Michael Niedermayer <michaelni at gmx.at> writes:

> On Wed, Aug 20, 2008 at 10:23:31PM +0300, Uoti Urpala wrote:
>> On Wed, 2008-08-20 at 21:00 +0200, Michael Niedermayer wrote:
>> > > mplayer counts frame delay using avctx->has_b_frames, which works for  
>> > > h264 and doesn't work with this. ffplay counts delay by adding pts to  
>> > > frames in get_buffer, which works with this but might not work with  
>> > > h264, because of the frame num gap code. I thought about making avctx- 
>> > >  >delay accurate for decoding too, which should solve all this.
>> > 
>> > mplayer is violating lavc API ...
>> > IIRC ive rejected the use of has_b_frames back then when uoti suggested it
>> You remember things backwards. The preliminary version of -correct-pts
>> used buffer callbacks to count the number of buffered frames, and it was
>> you who suggested using has_b_frames instead.
> I do remember rejecting the even more broken 
> "callbacks to count the number of buffered frames" and i suspect i told you
> back then that the timestamps should be given to the decoder to reorder them.

How does one "give the timestamps to the decoder" using lavc?  After
all these years, I still haven't figured it out.

M?ns Rullg?rd
mans at mansr.com

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