On 23/01/2018 06:05, Li, Zhong wrote:
avformat_find_stream_info() can provides some information and
sw_pix_fmt can be set as NV12. These parameters can be updated after
MFXVideoDECODE_DecodeHeader is called.

find_stream_info may decode frames using the software decoder to extract
the missing information (and it is one of those sore points that sooner
or later I'd like to completely remove from the library).

lu
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