[FFmpeg-devel] [PATCH] H.264: Record slice_qs_delta syntax element

[Gwenole Beauchesne]

Hi,

On Sat, 12 Dec 2009, Michael Niedermayer wrote:

> On Fri, Dec 11, 2009 at 03:25:34PM +0100, Gwenole Beauchesne wrote:
>> Hi,
>>
>> slice_qp_delta and slice_qs_delta values from the bitstream are
>> respectively needed for VAAPI,DXVA and DXVA.
>
>> The former could be
>> reconstructed with a single subtraction though.
>
> then i would suggest to do it with a subtraction

This is what we currently do but I felt having both recorded was better 
for consistency. qscale doesn't seem to be altered elsewhere for h264, so 
keeping the subtraction is ok for slice_qp_delta.

Anyway, here is a new patch with only slice_qs_delta.

Thanks,
Gwenole.
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