Opened 7 years ago
Last modified 3 months ago
#6882 open defect
HEVC decoding regression with SAODBLK conformance samples
Reported by: | Carl Eugen Hoyos | Owned by: | |
---|---|---|---|
Priority: | important | Component: | avcodec |
Version: | git-master | Keywords: | hevc regression |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | no | |
Analyzed by developer: | no |
Description (last modified by )
http://ffmpeg.org/pipermail/ffmpeg-user/2017-November/038065.html
Two hevc conformance tests do not decode correctly since fa0506e4136b5b883205c82809a113f5edcd200b
http://wftp3.itu.int/av-arch/jctvc-site/bitstream_exchange/draft_conformance/HEVC_v1/SAODBLK_A_MainConcept_4.zip
http://wftp3.itu.int/av-arch/jctvc-site/bitstream_exchange/draft_conformance/HEVC_v1/SAODBLK_B_MainConcept_4.zip
For the first sample, the first (I) frame shows the difference, for the second sample, the following P frame is also needed to show an issue.
$ ffmpeg -i SAODBLK_A_MainConcept_4.bin -vframes 1 -f crc - ffmpeg version N-89317-gda49cdf Copyright (c) 2000-2017 the FFmpeg developers built with gcc 6.3.0 (GCC) configuration: --enable-gpl libavutil 56. 3.100 / 56. 3.100 libavcodec 58. 6.101 / 58. 6.101 libavformat 58. 2.103 / 58. 2.103 libavdevice 58. 0.100 / 58. 0.100 libavfilter 7. 5.100 / 7. 5.100 libswscale 5. 0.101 / 5. 0.101 libswresample 3. 0.101 / 3. 0.101 libpostproc 55. 0.100 / 55. 0.100 Input #0, hevc, from 'SAODBLK_A_MainConcept_4.bin': Duration: N/A, bitrate: N/A Stream #0:0: Video: hevc (Main), yuv420p(tv), 1016x760, 25 fps, 25 tbr, 1200k tbn, 25 tbc Stream mapping: Stream #0:0 -> #0:0 (hevc (native) -> rawvideo (native)) Press [q] to stop, [?] for help Output #0, crc, to 'pipe:': Metadata: encoder : Lavf58.2.103 Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 1016x760, q=2-31, 231648 kb/s, 25 fps, 25 tbn, 25 tbc Metadata: encoder : Lavc58.6.101 rawvideo CRC=0xa2d6b6e6 frame= 1 fps=0.0 q=-0.0 Lsize= 0kB time=00:00:00.04 bitrate= 3.0kbits/s speed=1.61x video:1131kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
$ ffmpeg -i SAODBLK_B_MainConcept_4.bin -vframes 2 -f crc - ffmpeg version N-89317-gda49cdf Copyright (c) 2000-2017 the FFmpeg developers built with gcc 6.3.0 (GCC) configuration: --enable-gpl libavutil 56. 3.100 / 56. 3.100 libavcodec 58. 6.101 / 58. 6.101 libavformat 58. 2.103 / 58. 2.103 libavdevice 58. 0.100 / 58. 0.100 libavfilter 7. 5.100 / 7. 5.100 libswscale 5. 0.101 / 5. 0.101 libswresample 3. 0.101 / 3. 0.101 libpostproc 55. 0.100 / 55. 0.100 Input #0, hevc, from 'SAODBLK_B_MainConcept_4.bin': Duration: N/A, bitrate: N/A Stream #0:0: Video: hevc (Main), yuv420p(tv), 1016x760, 25 fps, 25 tbr, 1200k tbn, 25 tbc Stream mapping: Stream #0:0 -> #0:0 (hevc (native) -> rawvideo (native)) Press [q] to stop, [?] for help Output #0, crc, to 'pipe:': Metadata: encoder : Lavf58.2.103 Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 1016x760, q=2-31, 231648 kb/s, 25 fps, 25 tbn, 25 tbc Metadata: encoder : Lavc58.6.101 rawvideo CRC=0x1f5fb75f frame= 2 fps=0.0 q=-0.0 Lsize= 0kB time=00:00:00.08 bitrate= 1.5kbits/s speed=1.23x video:2262kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
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P.S. Oh, it is just a deblocking regression.
https://ffmpeg.org/pipermail/ffmpeg-user/2017-November/038072.html