Opened 6 years ago
Last modified 20 months ago
#5360 open defect
Errors shown when correctly decoding jpeg2000 frames
Reported by: | Carl Eugen Hoyos | Owned by: | |
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Priority: | minor | Component: | avcodec |
Version: | git-master | Keywords: | j2k regression |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | no | |
Analyzed by developer: | no |
Description
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.
Change History (2)
comment:1 by , 20 months ago
Status: | new → open |
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comment:2 by , 20 months ago
Decoding is still bit-exact.
That may be the case (and IS), but the lossless (by default) file produced by
ffmpeg -f lavfi -i testsrc=d=1 -c:v libopenjpeg -vframes 1 out1.j2k
after fix for lossless (look here https://trac.ffmpeg.org/ticket/4653#comment:7) does not cause any problems when you do
ffmpeg -i out.j2k -f crc -
while native jpeg2000 encoder does... So it is a problem!!! Those warnings are just overflow checks though.
Also NOTE: file created by native encoder is bigger 22408 vs 18916 bytes.
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It now prints bpno became invalid after c579ceffbe30d048c7448c5e9238fc52094de630.