[FFmpeg-trac] #7415(undetermined:new): [ffmpeg-qsv][1toN_encode] 1 to N avc encode failed on iHD driver.

FFmpeg trac at avcodec.org
Tue Sep 11 03:16:50 EEST 2018

#7415: [ffmpeg-qsv][1toN_encode] 1 to N avc encode failed on iHD driver.
             Reporter:               |                    Owner:
  zhuqingliang                       |                   Status:  new
                 Type:  defect       |                Component:
             Priority:  normal       |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:  qsv          |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |

Comment (by jkqxz):

 The video filter chain from -vf only applies to the first encoder, so the
 remaining ones are not using the hardware input on the same device.  Try
 with -filter_complex.

 This works for me:
 $ LIBVA_DRIVER_NAME=iHD ./ffmpeg_g -y -i input.mp4 -an -init_hw_device
 qsv=hw -filter_hw_device hw -filter_complex
 'format=nv12,hwupload=extra_hw_frames=64,split=2[out1][out2]' -map
 '[out1]' -c:v h264_qsv -frames:v 100 out1.h264 -map '[out2]' -c:v h264_qsv
 -frames:v 100 out2.h264

Ticket URL: <https://trac.ffmpeg.org/ticket/7415#comment:3>
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