[FFmpeg-trac] #7724(undetermined: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     |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:  vaapi        |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by fulinjie):

 Can not reproduce on my side without the sample.
 Tested with the same ffmpeg version, and it works.


 {{{
 ffmpeg -hwaccel vaapi -y -vaapi_device /dev/dri/renderD128
 -hwaccel_output_format vaapi -i
 /home/linjiefu/Videos/sourceVideo/4K_hevc.h265 -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 Copyright (c) 2000-2018 the FFmpeg
 developers
   built with gcc 7 (Ubuntu 7.3.0-27ubuntu1~18.04)
   configuration: --enable-libmfx --disable-optimizations --enable-debug=3
 --disable-stripping --enable-gpl --enable-libopenh264 --enable-libass
 --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-
 libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-
 libx265 --enable-nonfree --samples=fate-suite/
   libavutil      56. 26.100 / 56. 26.100
   libavcodec     58. 44.100 / 58. 44.100
   libavformat    58. 26.100 / 58. 26.100
   libavdevice    58.  6.101 / 58.  6.101
   libavfilter     7. 48.100 /  7. 48.100
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
   libpostproc    55.  4.100 / 55.  4.100
 Input #0, hevc, from '/home/linjiefu/Videos/sourceVideo/4K_hevc.h265':
   Duration: N/A, bitrate: N/A
     Stream #0:0: Video: hevc (Main), yuv420p(tv), 3840x2160 [SAR 1:1 DAR
 16:9], 50 fps, 50 tbr, 1200k tbn, 50 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (hevc (native) -> h264 (h264_vaapi))
 Press [q] to stop, [?] for help
 Output #0, h264, to '0001_4K02_1_0.h264':
   Metadata:
     encoder         : Lavf58.26.100
     Stream #0:0: Video: h264 (h264_vaapi) (High), vaapi_vld, 3840x2160
 [SAR 1:1 DAR 16:9], q=-1--1, 25000 kb/s, 50 fps, 50 tbn, 50 tbc
     Metadata:
       encoder         : Lavc58.44.100 h264_vaapi
 frame=   30 fps=0.0 q=-0.0 Lsize=    2092kB time=00:00:00.58
 bitrate=29544.4kbits/s speed=0.999x

 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7724#comment:2>
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