[FFmpeg-devel] [PATCH v4 1/4] lavc/vaapi_encode_h265: Add GPB frame support for hevc_vaapi

Xiang, Haihao haihao.xiang at intel.com
Wed Mar 16 17:04:25 EET 2022


> 
> Hmm.  So if we ignore both the names and the documentation as unhelpful then
> the meanings you are intending are:
> 
> Attribute unset -> no restrictions.
> Attribute set -> PREVIOUS bit must be set: P and B slices are both supported
> but RefPicList0 and RefPicList1 must in B slices must be equal.
> 
> Then additional bits modify that:
> 
> FUTURE bit set -> RefPicList0 and RefPicList1 in B slices may differ.
> BI_NOT_EMPTY bit set -> P slices are not supported.
> 
> (If this is actually the intended meaning then maybe someone could add this to
> the documentation in libva?)

I submitted https://github.com/intel/libva/pull/581 to update the doc, you are
welcome to review it.

Thanks
Haihao



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