[Libav-user] vaapi h.264 decoding with libav

[Xiang, Haihao]

You should use a player with VAAPI enabled.

e.g.  MPV + ffmpeg/libav

$> mpv --hwdec=vaapi --vo=vaapi <video file>

You will see the message of 'Trying to use hardware decoding' in the log
and CPU usage drop a lot if using VAAPI.

Thanks
Haihao


> Hello!
> 
> I am using ffmpeg/libav 2.5.3 on Haswell 4770 (HD 4600).
> I am using libav for decoding h.264 video stream.
> My ffmpeg build supports vaapi hardware decoder.
> 
> ...
> AVCodec *pCodec = FindDecoder(AV_CODEC_ID_H264);
> ...
> 
> How to check am I using hardware decoder or not?
> 
> P.S. 
> I have several ffmpeg builds with vaapi and without, But don`t see any difference in performance. Maybe cpu is very powerfull?
> I am decoding two separate 1080p yuv420 streams in realtime.
> 
> -- 
> Nikita Orlov
> Skype: nik_stet
> QQ: 2717846083
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