[FFmpeg-trac] #5360(avcodec:new): Errors shown when correctly decoding jpeg2000 frames

FFmpeg trac at avcodec.org
Tue Mar 22 00:45:47 CET 2016


#5360: Errors shown when correctly decoding jpeg2000 frames
-------------------------------------+-------------------------------------
               Reporter:  cehoyos    |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  minor      |              Component:  avcodec
                Version:  git-       |               Keywords:  j2k
  master                             |  regression
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 Errors are shown when decoding jpeg2000 frames since
 a85b02dcf70f62a6a433a607143f1f78fa5648bb
 {{{
 $ ffmpeg -f lavfi -i testsrc=d=1 -pred 1 -vframes 1 out.j2k
 }}}
 {{{
 $ ffmpeg -i out.j2k -f crc -
 ffmpeg version N-79105-gdf34b70 Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl
   libavutil      55. 19.100 / 55. 19.100
   libavcodec     57. 28.103 / 57. 28.103
   libavformat    57. 28.102 / 57. 28.102
   libavdevice    57.  0.101 / 57.  0.101
   libavfilter     6. 39.102 /  6. 39.102
   libswscale      4.  0.100 /  4.  0.100
   libswresample   2.  0.101 /  2.  0.101
   libpostproc    54.  0.100 / 54.  0.100
 [jpeg2000 @ 0x2011960] bpno became negative
     Last message repeated 365 times
 Input #0, j2k_pipe, from 'out.j2k':
   Duration: N/A, bitrate: N/A
     Stream #0:0: Video: jpeg2000 (JPEG 2000 codestream restriction 0),
 rgb24, 320x240, lossless, 25 tbr, 25 tbn, 25 tbc
 Output #0, crc, to 'pipe:':
   Metadata:
     encoder         : Lavf57.28.102
     Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 320x240,
 q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc
     Metadata:
       encoder         : Lavc57.28.103 rawvideo
 Stream mapping:
   Stream #0:0 -> #0:0 (jpeg2000 (native) -> rawvideo (native))
 Press [q] to stop, [?] for help
 [jpeg2000 @ 0x202e0a0] bpno became negative
     Last message repeated 365 times
 CRC=0x0d00d19b
 frame=    1 fps=0.0 q=-0.0 Lsize=       0kB time=00:00:00.04 bitrate=
 3.0kbits/s speed=1.74x
 video:225kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: unknown
 }}}
 Decoding is still bit-exact.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5360>
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