[FFmpeg-trac] #7724(ffmpeg:new): [FFmpeg-vaapi] HEVC 4K/FHD to AVC 4K/FHD transcoding failed

[FFmpeg]

#7724: [FFmpeg-vaapi] HEVC 4K/FHD to AVC 4K/FHD transcoding failed
-------------------------------------+-------------------------------------
             Reporter:  andreyor     |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:  ffmpeg       |                  Version:  git-
             Keywords:  ffmpeg-      |  master
  vaapi                              |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 How to reproduce:

 {{{
 ffmpeg -y -hwaccel vaapi -vaapi_device /dev/dri/renderD128
 -hwaccel_output_format vaapi -i
 <crowd_run_3840x2160_500_50.2160p30_500_40M.265> -frames 500 -c:v
 h264_vaapi -b:v 25000k -minrate:v 25000k -maxrate:v 25000k
 -compression_level 4 -g 256 -bf 2 0001_4K02_1_0.h264
 }}}

 ffmpeg version N-93001-g87c165c237

 Output:

 {{{
  [hevc @ 0x55c5541d4180] Stream #0: not enough frames to estimate rate;
 consider increasing probesize
  Input #0, hevc, from
 '/msdk/MEDIASDK_STREAMS/_System_Validation/performance/set001/crowd_run_3840x2160_500_50.2160p30_500_40M.265':
    Duration: N/A, bitrate: N/A
      Stream #0:0: Video: hevc (Main), yuv420p(tv), 3840x2160, 30 fps, 30
 tbr, 1200k tbn, 30 tbc
  Stream mapping:
    Stream #0:0 -> #0:0 (hevc (native) -> h264 (h264_vaapi))
  Press [q] to stop, [?] for help
  frame=    0 fps=0.0 q=0.0 size=       0kB time=-577014:32:22.77 bitrate=
 -0.0kbits/s speed=N/A
 Impossible to convert between the formats supported by the filter
 'Parsed_null_0' and the filter 'auto_scaler_0'
  Error reinitializing filters!
  Failed to inject frame into filter network: Function not implemented
  Error while processing the decoded data for stream #0:0
  Conversion failed!
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/7724>
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