[FFmpeg-trac] #7525(undetermined:new): VAAPI: Transcoding MJPEG to VP9 fails on GeminiLake

FFmpeg trac at avcodec.org
Wed Oct 31 21:36:38 EET 2018


#7525: VAAPI: Transcoding MJPEG to VP9 fails on GeminiLake
-------------------------------------+-------------------------------------
             Reporter:               |                     Type:  defect
  radek.hvizdos                      |                 Priority:  normal
               Status:  new          |                  Version:  git-
            Component:               |  master
  undetermined                       |               Blocked By:
             Keywords:  vaapi, vp9   |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Encoding VP9 via VAAPI works, but not when trying to use VAAPI to also
 HWAccel MJPEG decode. The error is: '''Failed to end picture encode issue:
 6 (invalid VASurfaceID)'''.

 Tested combinations:
 {{{
 decoder encoder    result
 HWAccel vp9_vaapi  FAIL
 SW      vp9_vaapi  OK
 HWAccel vp8_vaapi  OK
 SW      vp8_vaapi  OK
 HWAccel libvpx-vp9 OK
 }}}

 How to reproduce:
 {{{
 /root/ffmpeg/ffmpeg/ffmpeg -loglevel debug -y -hwaccel vaapi
 -hwaccel_output_format vaapi -hwaccel_device /dev/dri/renderD128
 -framerate 6 -pattern_type glob -i "*.jpg" -global_quality 145 -c:v
 vp9_vaapi -b:v 0 -threads 4 -g 30 ~/vp9_145.webm
 ffmpeg version N-92314-g323c2cf Copyright (c) 2000-2018 the FFmpeg
 developers
   built with gcc 8 (Debian 8.2.0-8)
   configuration: --prefix=/root/ffmpeg_build --pkg-config-flags=--static
 --extra-cflags=-I/root/ffmpeg_build/include --extra-
 ldflags=-L/root/ffmpeg_build/lib --extra-libs='-lpthread -lm'
 --bindir=/root/bin --enable-gpl --enable-libaom --enable-libass --enable-
 libfreetype --enable-libmp3lame --enable-libopus --enable-libvorbis
 --enable-libvpx --enable-libx264 --enable-nonfree
   libavutil      56. 21.100 / 56. 21.100
   libavcodec     58. 34.100 / 58. 34.100
   libavformat    58. 19.102 / 58. 19.102
   libavdevice    58.  4.106 / 58.  4.106
   libavfilter     7. 39.100 /  7. 39.100
   libswscale      5.  2.100 /  5.  2.100
   libswresample   3.  2.100 /  3.  2.100
   libpostproc    55.  2.100 / 55.  2.100
 Splitting the commandline.
 Reading option '-loglevel' ... matched as option 'loglevel' (set logging
 level) with argument 'debug'.
 Reading option '-y' ... matched as option 'y' (overwrite output files)
 with argument '1'.
 Reading option '-hwaccel' ... matched as option 'hwaccel' (use HW
 accelerated decoding) with argument 'vaapi'.
 Reading option '-hwaccel_output_format' ... matched as option
 'hwaccel_output_format' (select output format used with HW accelerated
 decoding) with argument 'vaapi'.
 Reading option '-hwaccel_device' ... matched as option 'hwaccel_device'
 (select a device for HW acceleration) with argument '/dev/dri/renderD128'.
 Reading option '-framerate' ... matched as AVOption 'framerate' with
 argument '6'.
 Reading option '-pattern_type' ... matched as AVOption 'pattern_type' with
 argument 'glob'.
 Reading option '-i' ... matched as input url with argument '*.jpg'.
 Reading option '-global_quality' ... matched as AVOption 'global_quality'
 with argument '145'.
 Reading option '-c:v' ... matched as option 'c' (codec name) with argument
 'vp9_vaapi'.
 Reading option '-b:v' ... matched as option 'b' (video bitrate (please use
 -b:v)) with argument '0'.
 Reading option '-threads' ... matched as AVOption 'threads' with argument
 '4'.
 Reading option '-g' ... matched as AVOption 'g' with argument '30'.
 Reading option '/root/vp9_145.webm' ... matched as output url.
 Finished splitting the commandline.
 Parsing a group of options: global .
 Applying option loglevel (set logging level) with argument debug.
 Applying option y (overwrite output files) with argument 1.
 Successfully parsed a group of options.
 Parsing a group of options: input url *.jpg.
 Applying option hwaccel (use HW accelerated decoding) with argument vaapi.
 Applying option hwaccel_output_format (select output format used with HW
 accelerated decoding) with argument vaapi.
 Applying option hwaccel_device (select a device for HW acceleration) with
 argument /dev/dri/renderD128.
 Successfully parsed a group of options.
 Opening an input file: *.jpg.
 [image2 @ 0x55dedf596540] Opening '0.jpg' for reading
 [file @ 0x55dedf59fdc0] Setting default whitelist 'file,crypto'
 [AVIOContext @ 0x55dedf5a0040] Statistics: 141976 bytes read, 0 seeks
 [mjpeg @ 0x55dedf598540] marker=d8 avail_size_in_buf=141974
 [mjpeg @ 0x55dedf598540] marker parser used 0 bytes (0 bits)
 [mjpeg @ 0x55dedf598540] marker=e0 avail_size_in_buf=141972
 [mjpeg @ 0x55dedf598540] marker parser used 16 bytes (128 bits)
 [mjpeg @ 0x55dedf598540] marker=e1 avail_size_in_buf=141954
 [mjpeg @ 0x55dedf598540] marker parser used 183 bytes (1464 bits)
 [mjpeg @ 0x55dedf598540] marker=db avail_size_in_buf=141768
 [mjpeg @ 0x55dedf598540] index=0
 [mjpeg @ 0x55dedf598540] qscale[0]: 2
 [mjpeg @ 0x55dedf598540] marker parser used 67 bytes (536 bits)
 [mjpeg @ 0x55dedf598540] marker=db avail_size_in_buf=141699
 [mjpeg @ 0x55dedf598540] index=1
 [mjpeg @ 0x55dedf598540] qscale[1]: 5
 [mjpeg @ 0x55dedf598540] marker parser used 67 bytes (536 bits)
 [mjpeg @ 0x55dedf598540] marker=c0 avail_size_in_buf=141630
 [mjpeg @ 0x55dedf598540] Changing bps from 0 to 8
 [mjpeg @ 0x55dedf598540] sof0: picture: 1920x1440
 [mjpeg @ 0x55dedf598540] component 0 2:2 id: 0 quant:0
 [mjpeg @ 0x55dedf598540] component 1 1:1 id: 1 quant:1
 [mjpeg @ 0x55dedf598540] component 2 1:1 id: 2 quant:1
 [mjpeg @ 0x55dedf598540] pix fmt id 22111100
 [mjpeg @ 0x55dedf598540] Format yuvj420p chosen by get_format().
 [mjpeg @ 0x55dedf598540] marker parser used 17 bytes (136 bits)
 [mjpeg @ 0x55dedf598540] marker=c4 avail_size_in_buf=141611
 [mjpeg @ 0x55dedf598540] marker parser used 0 bytes (0 bits)
 [mjpeg @ 0x55dedf598540] marker=c4 avail_size_in_buf=141578
 [mjpeg @ 0x55dedf598540] marker parser used 0 bytes (0 bits)
 [mjpeg @ 0x55dedf598540] marker=c4 avail_size_in_buf=141395
 [mjpeg @ 0x55dedf598540] marker parser used 0 bytes (0 bits)
 [mjpeg @ 0x55dedf598540] marker=c4 avail_size_in_buf=141362
 [mjpeg @ 0x55dedf598540] marker parser used 0 bytes (0 bits)
 [mjpeg @ 0x55dedf598540] escaping removed 356 bytes
 [mjpeg @ 0x55dedf598540] marker=da avail_size_in_buf=141179
 [mjpeg @ 0x55dedf598540] marker parser used 140823 bytes (1126584 bits)
 [mjpeg @ 0x55dedf598540] marker=d9 avail_size_in_buf=0
 [mjpeg @ 0x55dedf598540] decode frame unused 0 bytes
 [image2 @ 0x55dedf596540] Opening '1.jpg' for reading
 [file @ 0x55dedf5a1880] Setting default whitelist 'file,crypto'
 [AVIOContext @ 0x55dedf59e440] Statistics: 185688 bytes read, 0 seeks
 [image2 @ 0x55dedf596540] Opening '2.jpg' for reading
 [file @ 0x55dedf59e980] Setting default whitelist 'file,crypto'
 [AVIOContext @ 0x55dedf5a1840] Statistics: 141976 bytes read, 0 seeks
 [image2 @ 0x55dedf596540] Opening '3.jpg' for reading
 [file @ 0x55dedf59d100] Setting default whitelist 'file,crypto'
 [AVIOContext @ 0x55dedf59d240] Statistics: 185688 bytes read, 0 seeks
 [image2 @ 0x55dedf596540] Opening '4.jpg' for reading
 [file @ 0x55dedf5a6240] Setting default whitelist 'file,crypto'
 [AVIOContext @ 0x55dedf5ae400] Statistics: 141976 bytes read, 0 seeks
 [image2 @ 0x55dedf596540] Opening '5.jpg' for reading
 [file @ 0x55dedf5a6780] Setting default whitelist 'file,crypto'
 [AVIOContext @ 0x55dedf5a69c0] Statistics: 185688 bytes read, 0 seeks
 [image2 @ 0x55dedf596540] Opening '6.jpg' for reading
 [file @ 0x55dedf5a6f00] Setting default whitelist 'file,crypto'
 [AVIOContext @ 0x55dedf5a7240] Statistics: 141976 bytes read, 0 seeks
 [image2 @ 0x55dedf596540] Opening '7.jpg' for reading
 [file @ 0x55dedf5a7600] Setting default whitelist 'file,crypto'
 [AVIOContext @ 0x55dedf5a76c0] Statistics: 185688 bytes read, 0 seeks
 [image2 @ 0x55dedf596540] Opening '8.jpg' for reading
 [file @ 0x55dedf5a7a80] Setting default whitelist 'file,crypto'
 [AVIOContext @ 0x55dedf5a7b40] Statistics: 141976 bytes read, 0 seeks
 [image2 @ 0x55dedf596540] Opening '9.jpg' for reading
 [file @ 0x55dedf5a8080] Setting default whitelist 'file,crypto'
 [AVIOContext @ 0x55dedf5a8140] Statistics: 185688 bytes read, 0 seeks
 Input #0, image2, from '*.jpg':
   Duration: 00:00:01.67, start: 0.000000, bitrate: N/A
     Stream #0:0, 10, 1/6: Video: mjpeg, 1 reference frame, yuvj420p(pc,
 bt470bg/unknown/unknown, center), 1920x1440 [SAR 1:1 DAR 4:3], 0/1, 6 fps,
 6 tbr, 6 tbn, 6 tbc
 Successfully opened the file.
 Parsing a group of options: output url /root/vp9_145.webm.
 Applying option c:v (codec name) with argument vp9_vaapi.
 Applying option b:v (video bitrate (please use -b:v)) with argument 0.
 Successfully parsed a group of options.
 Opening an output file: /root/vp9_145.webm.
 [file @ 0x55dedf59b980] Setting default whitelist 'file,crypto'
 Successfully opened the file.
 [AVHWDeviceContext @ 0x55dedf596480] Opened VA display via DRM device
 /dev/dri/renderD128.
 [AVHWDeviceContext @ 0x55dedf596480] libva: VA-API version 1.3.0
 [AVHWDeviceContext @ 0x55dedf596480] libva: va_getDriverName() returns 0
 [AVHWDeviceContext @ 0x55dedf596480] libva: Trying to open /usr/lib/x86_64
 -linux-gnu/dri/i965_drv_video.so
 [AVHWDeviceContext @ 0x55dedf596480] libva: Found init function
 __vaDriverInit_1_2
 [AVHWDeviceContext @ 0x55dedf596480] libva: va_openDriver() returns 0
 [AVHWDeviceContext @ 0x55dedf596480] Initialised VAAPI connection: version
 1.3
 [AVHWDeviceContext @ 0x55dedf596480] Format 0x32315659 -> yuv420p.
 [AVHWDeviceContext @ 0x55dedf596480] Format 0x30323449 -> yuv420p.
 [AVHWDeviceContext @ 0x55dedf596480] Format 0x3231564e -> nv12.
 [AVHWDeviceContext @ 0x55dedf596480] Format 0x32595559 -> yuyv422.
 [AVHWDeviceContext @ 0x55dedf596480] Format 0x59565955 -> uyvy422.
 [AVHWDeviceContext @ 0x55dedf596480] Format 0x48323234 -> yuv422p.
 [AVHWDeviceContext @ 0x55dedf596480] Format 0x58424752 -> rgb0.
 [AVHWDeviceContext @ 0x55dedf596480] Format 0x58524742 -> bgr0.
 [AVHWDeviceContext @ 0x55dedf596480] Format 0x30313050 -> p010le.
 [AVHWDeviceContext @ 0x55dedf596480] VAAPI driver: Intel i965 driver for
 Intel(R) Gemini Lake - 2.2.1.pre1 (2.2.1.pre1).
 [AVHWDeviceContext @ 0x55dedf596480] Driver not found in known nonstandard
 list, using standard behaviour.
 Stream mapping:
   Stream #0:0 -> #0:0 (mjpeg (native) -> vp9 (vp9_vaapi))
 Press [q] to stop, [?] for help
 cur_dts is invalid (this is harmless if it occurs once at the start per
 stream)
 [mjpeg @ 0x55dedf598ec0] marker=d8 avail_size_in_buf=141974
 [mjpeg @ 0x55dedf598ec0] marker parser used 0 bytes (0 bits)
 [mjpeg @ 0x55dedf598ec0] marker=e0 avail_size_in_buf=141972
 [mjpeg @ 0x55dedf598ec0] marker parser used 16 bytes (128 bits)
 [mjpeg @ 0x55dedf598ec0] marker=e1 avail_size_in_buf=141954
 [mjpeg @ 0x55dedf598ec0] marker parser used 183 bytes (1464 bits)
 [mjpeg @ 0x55dedf598ec0] marker=db avail_size_in_buf=141768
 [mjpeg @ 0x55dedf598ec0] index=0
 [mjpeg @ 0x55dedf598ec0] qscale[0]: 2
 [mjpeg @ 0x55dedf598ec0] marker parser used 67 bytes (536 bits)
 [mjpeg @ 0x55dedf598ec0] marker=db avail_size_in_buf=141699
 [mjpeg @ 0x55dedf598ec0] index=1
 [mjpeg @ 0x55dedf598ec0] qscale[1]: 5
 [mjpeg @ 0x55dedf598ec0] marker parser used 67 bytes (536 bits)
 [mjpeg @ 0x55dedf598ec0] marker=c0 avail_size_in_buf=141630
 [mjpeg @ 0x55dedf598ec0] sof0: picture: 1920x1440
 [mjpeg @ 0x55dedf598ec0] component 0 2:2 id: 0 quant:0
 [mjpeg @ 0x55dedf598ec0] component 1 1:1 id: 1 quant:1
 [mjpeg @ 0x55dedf598ec0] component 2 1:1 id: 2 quant:1
 [mjpeg @ 0x55dedf598ec0] pix fmt id 22111100
 [mjpeg @ 0x55dedf598ec0] Format vaapi_vld chosen by get_format().
 [mjpeg @ 0x55dedf598ec0] Format vaapi_vld requires hwaccel initialisation.
 [mjpeg @ 0x55dedf598ec0] Considering format 0x33434d49 -> yuv420p.
 [mjpeg @ 0x55dedf598ec0] Ignoring unknown format 0x31434d49.
 [mjpeg @ 0x55dedf598ec0] Considering format 0x30303859 -> gray.
 [mjpeg @ 0x55dedf598ec0] Considering format 0x50313134 -> yuv411p.
 [mjpeg @ 0x55dedf598ec0] Considering format 0x48323234 -> yuv422p.
 [mjpeg @ 0x55dedf598ec0] Considering format 0x56323234 -> yuv440p.
 [mjpeg @ 0x55dedf598ec0] Considering format 0x50343434 -> yuv444p.
 [mjpeg @ 0x55dedf598ec0] Picked yuv420p (0x33434d49) as best match for
 yuvj420p.
 [AVHWFramesContext @ 0x55dedf5ae1c0] Created surface 0x4000000.
 [AVHWFramesContext @ 0x55dedf5ae1c0] Direct mapping possible.
 [AVHWFramesContext @ 0x55dedf5ae1c0] Created surface 0x4000001.
 [AVHWFramesContext @ 0x55dedf5ae1c0] Created surface 0x4000002.
 [AVHWFramesContext @ 0x55dedf5ae1c0] Created surface 0x4000003.
 [AVHWFramesContext @ 0x55dedf5ae1c0] Created surface 0x4000004.
 [AVHWFramesContext @ 0x55dedf5ae1c0] Created surface 0x4000005.
 [mjpeg @ 0x55dedf598ec0] Considering format 0x33434d49 -> yuv420p.
 [mjpeg @ 0x55dedf598ec0] Ignoring unknown format 0x31434d49.
 [mjpeg @ 0x55dedf598ec0] Considering format 0x30303859 -> gray.
 [mjpeg @ 0x55dedf598ec0] Considering format 0x50313134 -> yuv411p.
 [mjpeg @ 0x55dedf598ec0] Considering format 0x48323234 -> yuv422p.
 [mjpeg @ 0x55dedf598ec0] Considering format 0x56323234 -> yuv440p.
 [mjpeg @ 0x55dedf598ec0] Considering format 0x50343434 -> yuv444p.
 [mjpeg @ 0x55dedf598ec0] Picked yuv420p (0x33434d49) as best match for
 yuvj420p.
 [mjpeg @ 0x55dedf598ec0] Decode context initialised: 0x1000000/0x2000000.
 [mjpeg @ 0x55dedf598ec0] Param buffer (type 0, 1060 bytes) is 0x8000000.
 [mjpeg @ 0x55dedf598ec0] marker parser used 17 bytes (136 bits)
 [mjpeg @ 0x55dedf598ec0] marker=c4 avail_size_in_buf=141611
 20:28
 [mjpeg @ 0x55dedf598ec0] class=0 index=0 nb_codes=12
 [mjpeg @ 0x55dedf598ec0] marker parser used 31 bytes (248 bits)
 [mjpeg @ 0x55dedf598ec0] marker=c4 avail_size_in_buf=141578
 [mjpeg @ 0x55dedf598ec0] class=1 index=0 nb_codes=251
 [mjpeg @ 0x55dedf598ec0] marker parser used 181 bytes (1448 bits)
 [mjpeg @ 0x55dedf598ec0] marker=c4 avail_size_in_buf=141395
 [mjpeg @ 0x55dedf598ec0] class=0 index=1 nb_codes=12
 [mjpeg @ 0x55dedf598ec0] marker parser used 31 bytes (248 bits)
 [mjpeg @ 0x55dedf598ec0] marker=c4 avail_size_in_buf=141362
 [mjpeg @ 0x55dedf598ec0] class=1 index=1 nb_codes=251
 [mjpeg @ 0x55dedf598ec0] marker parser used 181 bytes (1448 bits)
 [mjpeg @ 0x55dedf598ec0] escaping removed 356 bytes
 [mjpeg @ 0x55dedf598ec0] marker=da avail_size_in_buf=141179
 [mjpeg @ 0x55dedf598ec0] component: 0
 [mjpeg @ 0x55dedf598ec0] component: 1
 [mjpeg @ 0x55dedf598ec0] component: 2
 [mjpeg @ 0x55dedf598ec0] Param buffer (type 12, 436 bytes) is 0x8000001.
 [mjpeg @ 0x55dedf598ec0] Param buffer (type 1, 276 bytes) is 0x8000002.
 [mjpeg @ 0x55dedf598ec0] Slice 0 param buffer (56 bytes) is 0x8000003.
 [mjpeg @ 0x55dedf598ec0] Slice 0 data buffer (141167 bytes) is 0x8000004.
 [mjpeg @ 0x55dedf598ec0] marker parser used 12 bytes (96 bits)
 [mjpeg @ 0x55dedf598ec0] marker=d9 avail_size_in_buf=0
 [mjpeg @ 0x55dedf598ec0] Decode to surface 0x4000005.
 [mjpeg @ 0x55dedf598ec0] decode frame unused 0 bytes
 [graph 0 input from stream 0:0 @ 0x55dedf5b8ec0] Setting 'video_size' to
 value '1920x1440'
 [graph 0 input from stream 0:0 @ 0x55dedf5b8ec0] Setting 'pix_fmt' to
 value '46'
 [graph 0 input from stream 0:0 @ 0x55dedf5b8ec0] Setting 'time_base' to
 value '1/6'
 [graph 0 input from stream 0:0 @ 0x55dedf5b8ec0] Setting 'pixel_aspect' to
 value '1/1'
 [graph 0 input from stream 0:0 @ 0x55dedf5b8ec0] Setting 'sws_param' to
 value 'flags=2'
 [graph 0 input from stream 0:0 @ 0x55dedf5b8ec0] Setting 'frame_rate' to
 value '6/1'
 [graph 0 input from stream 0:0 @ 0x55dedf5b8ec0] w:1920 h:1440
 pixfmt:vaapi_vld tb:1/6 fr:6/1 sar:1/1 sws_param:flags=2
 [format @ 0x55dedf5b8c40] Setting 'pix_fmts' to value 'vaapi_vld'
 [AVFilterGraph @ 0x55dedf59ab00] query_formats: 4 queried, 3 merged, 0
 already done, 0 delayed
 [vp9_vaapi @ 0x55dedf5a0f00] Input surface format is yuv420p.
 [vp9_vaapi @ 0x55dedf5a0f00] Using VAAPI profile VAProfileVP9Profile0
 (19).
 [vp9_vaapi @ 0x55dedf5a0f00] Using VAAPI entrypoint VAEntrypointEncSlice
 (6).
 [vp9_vaapi @ 0x55dedf5a0f00] Using VAAPI render target format YUV420
 (0x1).
 [vp9_vaapi @ 0x55dedf5a0f00] Using constant-quality mode.
 [vp9_vaapi @ 0x55dedf5a0f00] Using intra and P-frames (supported
 references: 1 / 1).
 [vp9_vaapi @ 0x55dedf5a0f00] All wanted packed headers available (wanted
 0, found 0x10).
 [vp9_vaapi @ 0x55dedf5a0f00] Using yuv420p as format of reconstructed
 frames.
 [AVHWFramesContext @ 0x55dedf5e9980] Created surface 0x4000006.
 [AVHWFramesContext @ 0x55dedf5e9980] Direct mapping disabled: derived
 image format 32315659 does not match expected format 30323449.
 [AVHWFramesContext @ 0x55dedf5e9980] Created surface 0x4000007.
 [AVHWFramesContext @ 0x55dedf5e9980] Created surface 0x4000008.
 [webm @ 0x55dedf59ec40] get_metadata_duration returned: 0
 Output #0, webm, to '/root/vp9_145.webm':
   Metadata:
     encoder         : Lavf58.19.102
     Stream #0:0, 0, 1/1000: Video: vp9 (vp9_vaapi) (Profile 0), 1
 reference frame, vaapi_vld(center), 1920x1440 [SAR 1:1 DAR 4:3], 0/1, q=-1
 --1, 6 fps, 1k tbn, 6 tbc
     Metadata:
       encoder         : Lavc58.34.100 vp9_vaapi
 Clipping frame in rate conversion by 0.000008
 [vp9_vaapi @ 0x55dedf5a0f00] Encode frame: 1920x1440 (0).
 [vp9_vaapi @ 0x55dedf5a0f00] Pictures: IDR (0/0)
 [vp9_vaapi @ 0x55dedf5a0f00] Issuing encode for pic 0/0 as type IDR.
 [vp9_vaapi @ 0x55dedf5a0f00] No reference pictures.
 [vp9_vaapi @ 0x55dedf5a0f00] Input surface is 0x4000005.
 [vp9_vaapi @ 0x55dedf5a0f00] Recon surface is 0x4000008.
 [vp9_vaapi @ 0x55dedf5a0f00] Allocated output buffer 0x8000004
 [vp9_vaapi @ 0x55dedf5a0f00] Output buffer is 0x8000004.
 [vp9_vaapi @ 0x55dedf5a0f00] Param buffer (22) is 0x8000003.
 [vp9_vaapi @ 0x55dedf5a0f00] Param buffer (23) is 0x8000002.
 [vp9_vaapi @ 0x55dedf5a0f00] Failed to end picture encode issue: 6
 (invalid VASurfaceID).
 [vp9_vaapi @ 0x55dedf5a0f00] Encode failed: -5.
 Video encoding failed
 [AVIOContext @ 0x55dedf59b680] Statistics: 0 seeks, 1 writeouts
 [vp9_vaapi @ 0x55dedf5a0f00] Freed output buffer 0x8000004
 Conversion failed!

 uname -a
 Linux ike 4.18.0-2-amd64 #1 SMP Debian 4.18.10-2 (2018-10-07) x86_64
 GNU/Linux

 }}}

 I am not sure if this is a bug in ffmpeg, vaapi or the gpu driver.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7525>
FFmpeg <https://ffmpeg.org>
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