Opened 5 years ago

Closed 5 years ago

#7431 closed enhancement (wontfix)

[ffmpeg-qsv][avc encode] option "'userawref" is not support

Reported by: a Owned by:
Priority: wish Component: undetermined
Version: unspecified Keywords: qsv
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no



CFL	OS: ubuntu 17.04	kernel: 4.15.0
	KBL	OS: ubuntu 16.04	kernel: 4.14.0-rc1
	SKL	OS: ubuntu 16.04	kernel: 4.15.0
libva	b6c50dad4d7d14c507108d9f468662e2d7ae1c4d  ( master )
iHD Driver	ed04556a6676fd77ff845508bc54bfc60915450c
libva-utils	9a10ad663349732decd668a426cfc349b0010d1d
Mediasdk	7ea683585f0f84f1bea035a405855312c92c46c0
FFMPEG	56f68a099cc607658118e00cad30569103ae3751

How to reproduce: env as above lists
2.ffmpeg -hwaccel qsv -init_hw_device qsv=hw -filter_hw_device hw -v verbose -f rawvideo -video_size 720x480 -pix_fmt nv12 -i ./Test_720x480p.yuv -an -vf hwupload=extra_hw_frames=64,format=qsv -c:v h264_qsv -framerate 30 -userawref 1 -y ./H264e_userawref_480P.h264
3.error message:
Unrecognized option 'userawref'

Change History (3)

comment:1 by Carl Eugen Hoyos, 5 years ago

Keywords: userawref removed
Priority: normalwish
Type: defectenhancement

comment:2 by Zhong,Li, 5 years ago

Please comment why you need such an option. Not everything of MSDK should be exposed in ffmpeg.
I guess the option "userawref" here you mean is to use original input yuv frame as reference during encoding, instead of using reconstruct frame as reference.
But what is the benefit? It will cause decoder behavior doesn't match encoder, then produce bad decoded video quality.

comment:3 by Zhong,Li, 5 years ago

Resolution: wontfix
Status: newclosed
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