[FFmpeg-trac] #7408(undetermined:new): [ffmpeg-qsv][vp8_decode] decode failed on iHD driver.

[FFmpeg]

#7408: [ffmpeg-qsv][vp8_decode] decode 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 zhuqingliang):

 Replying to [ticket:7408 zhuqingliang]:
 > Summary of the bug:
 > {{{
 > some cases of vp8 decode failed
 > }}}
 > environment
 > {{{
 > SKL OS: ubuntu 16.04 kernel: 4.15.0
 > libva b6c50dad4d7d14c507108d9f468662e2d7ae1c4d
 ​https://github.com/01org/libva.git
 > 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 -hwaccel_device /dev/dri/renderD128 -v verbose -y
 -c:v vp8_qsv -i /media//vp8_vpg/2160p_Demo_-_3840x2160_pixel_4k_Video_-
 _a_timelapse_project_by_Florian_Friedrich.webm -vf hwdownload,format=nv12
 -pix_fmt yuv420p -f md5 qsv_out.md5
 > 3. part of error message:
 > Impossible to convert between the formats supported by the filter 'graph
 0 input from stream 0:0' and the filter 'auto_scaler_0'
 > Error configuring filter graph
 > [AVIOContext @ 0x1128f80] Statistics: 0 seeks, 0 writeouts
 > [AVIOContext @ 0x112d240] Statistics: 116616152 bytes read, 0 seeks
 > Conversion failed!
 > }}}
 > failed case
 > {{{
 > vp8_rev085_MVFocused_16x4096.webm
 > vp8_rev085_MVFocused_4096x16.webm
 > 2160p_Demo_-_3840x2160_pixel_4k_Video_-
 _a_timelapse_project_by_Florian_Friedrich.webm
 > }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/7408#comment:2>
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