[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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