[x264-devel] Re: Problems with PTS and b frames

[Laurent Aimar]

On Tue, Dec 13, 2005, Bill May wrote:
> ts    saved   i_pts   type
> 0     (0 nals returned)
> 33    (0 nals returned)
> 66    (0 nals returned
> 99     0       0    IDR
> 122    33      66   P
> 155    66      33   B
> 188    99      122  P
> 221    122     99   B
 x264 returns reordered input pts. You need to add an offset
to be able to use them. This offset is equal to
 max_reorder_buffer_size * maximum_delay_between_frame.

In case you are not using pyramidal B frame :
 max_reorder_buffer_size equals 1 (0 without B frames).
 maximum_delay_between_frame has to be greater or equal to 1/min_frame_rate
(becarefull, for example, with realtime PAL acquisition you may not always
get exact 25fps, sometime a bit lower or higher)

In your case this gives 33ms and (0,66,33,..) + 33 gives what you want.

-- 
fenrir

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