[FFmpeg-trac] #8888(avcodec:new): Artefacts and errors when decoding h264 file from KKmoon CCTV camera

[FFmpeg]

#8888: Artefacts and errors when decoding h264 file from KKmoon CCTV camera
---------------------------------+---------------------------------------
             Reporter:  rmk      |                     Type:  defect
               Status:  new      |                 Priority:  normal
            Component:  avcodec  |                  Version:  unspecified
             Keywords:  h264     |               Blocked By:
             Blocking:           |  Reproduced by developer:  0
Analyzed by developer:  0        |
---------------------------------+---------------------------------------
 Summary of the bug:

 I have a video file from a KKmoon CCTV camera that gives me decoding
 errors which are very likely the reason for several macroblocks being
 broken in the resulting video (by far not all, you can still recognize the
 motive).

 {{{
 ffmpeg -i file0000.h264 -c:v mpeg4 -q 1 file0000-transcoded.mov
 ffmpeg version N-98974-g2a19232c19 Copyright (c) 2000-2020 the FFmpeg
 developers
   built with Apple clang version 11.0.0 (clang-1100.0.33.17)
   configuration: --enable-libkvazaar --enable-gpl --enable-libx264
 --enable-libx265
   libavutil      56. 58.100 / 56. 58.100
   libavcodec     58.101.101 / 58.101.101
   libavformat    58. 51.101 / 58. 51.101
   libavdevice    58. 11.101 / 58. 11.101
   libavfilter     7. 87.100 /  7. 87.100
   libswscale      5.  8.100 /  5.  8.100
   libswresample   3.  8.100 /  3.  8.100
   libpostproc    55.  8.100 / 55.  8.100
 [h264 @ 0x7fb2b0009400] Increasing reorder buffer to 1
 [h264 @ 0x7fb2b0009400] Increasing reorder buffer to 2
 [h264 @ 0x7fb2b0009400] Increasing reorder buffer to 4
 Input #0, h264, from 'file0000.h264':
   Duration: N/A, bitrate: N/A
     Stream #0:0: Video: h264 (High), yuvj420p(pc, bt709, progressive),
 1280x720, 25 fps, 25 tbr, 1200k tbn, 50 tbc
 File 'file0000-transcoded.mov' already exists. Overwrite? [y/N] y
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 (native) -> mpeg4 (native))
 Press [q] to stop, [?] for help
 [swscaler @ 0x7fb260f00000] deprecated pixel format used, make sure you
 did set range correctly
 Output #0, mov, to 'file0000-transcoded.mov':
   Metadata:
     encoder         : Lavf58.51.101
     Stream #0:0: Video: mpeg4 (mp4v / 0x7634706D), yuv420p, 1280x720,
 q=2-31, 200 kb/s, 25 fps, 12800 tbn, 25 tbc
     Metadata:
       encoder         : Lavc58.101.101 mpeg4
     Side data:
       cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
 [h264 @ 0x7fb2ae80ee00] Invalid NAL unit 0, skipping.
 [h264 @ 0x7fb2ae823000] Invalid NAL unit 0, skipping.
 [h264 @ 0x7fb2ae810600] A non-intra slice in an IDR NAL
 unit.trate=3503.0kbits/s speed=17.9x
 [h264 @ 0x7fb2ae810600] decode_slice_header error
 [h264 @ 0x7fb2ae80ca00] A non-intra slice in an IDR NAL unit.
 [h264 @ 0x7fb2ae80ca00] decode_slice_header error
 [h264 @ 0x7fb2ae80f400] Invalid NAL unit 0, skipping.
 [h264 @ 0x7fb2ae80c400] Invalid NAL unit 0, skipping.
 [h264 @ 0x7fb2ae80ca00] A non-intra slice in an IDR NAL
 unit.trate=3498.9kbits/s speed=19.1x
 [h264 @ 0x7fb2ae80ca00] decode_slice_header error
 [NULL @ 0x7fb2b0009400] sps_id 32 out of range
 [h264 @ 0x7fb2ae80f400] Invalid NAL unit 0, skipping.
 [NULL @ 0x7fb2b0009400] sps_id 32 out of range
 [h264 @ 0x7fb2ae80c400] Invalid NAL unit 0, skipping.
 [NULL @ 0x7fb2b0009400] pps_id 3199971767 out of range8.44
 bitrate=3480.9kbits/s speed=19.4x
 [h264 @ 0x7fb2ae80f400] Invalid NAL unit 0, skipping.
 [NULL @ 0x7fb2b0009400] pps_id 3199971767 out of range
 [h264 @ 0x7fb2ae80c400] Invalid NAL unit 0, skipping.
 [NULL @ 0x7fb2b0009400] too many reference frames 32:08.40
 bitrate=3495.3kbits/s speed=19.5x
 [h264 @ 0x7fb2ae823000] too many reference frames 32
     Last message repeated 2 times
 frame= 2014 fps=490 q=1.0 Lsize=   34484kB time=00:01:20.52
 bitrate=3508.3kbits/s speed=19.6x
 video:34474kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.028308%
 }}}
 Patches should be submitted to the ffmpeg-devel mailing list and not this
 bug tracker.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/8888>
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