[FFmpeg-trac] #7413(undetermined:new): [ffmpeg-qsv][avc_encode]encode file bitrate out of range target 10% on iHD driver.

[FFmpeg]

#7413: [ffmpeg-qsv][avc_encode]encode file bitrate out of range target 10% on iHD
driver.
-------------------------------------+-------------------------------------
             Reporter:               |                     Type:  defect
  zhuqingliang                       |                 Priority:  normal
               Status:  new          |                  Version:
            Component:               |  unspecified
  undetermined                       |               Blocked By:
             Keywords:  qsv bitrate  |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 {{{
 (real_filezise-ref_filesize)/ref_filesize > 10%
 }}}
 environment
 {{{
 FFMPEG-QSV      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
 https://github.com/01org/libva.git  ( master )
 iHD Driver      ed04556a6676fd77ff845508bc54bfc60915450c
 https://github.com/intel/media-driver
 libva-utils     9a10ad663349732decd668a426cfc349b0010d1d
 https://github.com/01org/libva-utils.git
 Mediasdk        7ea683585f0f84f1bea035a405855312c92c46c0
 https://github.com/Intel-Media-SDK/MediaSDK
 FFMPEG  56f68a099cc607658118e00cad30569103ae3751
 https://git.ffmpeg.org/ffmpeg.git
 }}}
 How to reproduce:
 {{{
 1.build env as above lists
 2.ffmpeg -hwaccel qsv -init_hw_device qsv=hw -filter_hw_device hw -v
 verbose -f rawvideo -video_size 3840x2160 -pix_fmt yuv420p -i
 ./encoderbitstreams//4K_2013_3840_2160_300frames.yuv -an -vf
 hwupload=extra_hw_frames=64,format=qsv -c:v h264_qsv -g 30 -bf 3 -r 30
 -b:v 3M -maxrate:v 3M -preset 4 -vframes 100 -vsync 0 -y
 ./h264e_cbr_3840x2160_gop30_refdist3_bitrate3M.h264
 3. size of h264e_cbr_3840x2160_gop30_refdist3_bitrate3M.h264 =1561474 ,
 ref_filesize = 3 * 1024 =3072
 4. bitrate_real=1561474*8*30/1024/100=3659.70
 5. bitrate_gap = (3659.70-3072)/3072= 19.00% large than 10%
 }}}

 failed case
 {{{
 h264e_cbr_352x288_gop30_refdist3_bitrate100k.h264 on CFL/KBL/SKL
 h264e_cbr_3840x2160_gop30_refdist3_bitrate3M.h264 on CFL/KBL/SKL
 h264e_cbr_3840x2160_gop30_refdist3_bitrate5M.h264 on SKL
 h264e_cbr_720x480_gop30_refdist3_bitrate1M.h264 on CFL/KBL
 h264e_cbr_720x480_gop30_refdist3_bitrate2M.h264 on CFL/KBL
 h264e_vbr_352x288_gop30_refdist3_bitrate100k.h264 on CFL/KBL/SKL
 h264e_vbr_352x288_gop30_refdist3_bitrate200k.h264 on CFL/KBL/SKL
 h264e_vbr_720x480_gop30_refdist3_bitrate1M.h264 on CFL/KBL/SKL
 h264e_vbr_1280x720_gop30_refdist3_bitrate8M.h264 on CFL/KBL/SKL
 }}}
 yuv file too large to upload

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Ticket URL: <https://trac.ffmpeg.org/ticket/7413>
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