[FFmpeg-trac] #3754(avcodec:open): jpeg2000 encode produces gray garbage files, probably connected to threads and compression
FFmpeg
trac at avcodec.org
Wed Jul 9 21:49:04 CEST 2014
#3754: jpeg2000 encode produces gray garbage files, probably connected to threads
and compression
-------------------------------------+-------------------------------------
Reporter: bud | Owner:
Type: defect | Status: open
Priority: important | Component: avcodec
Version: git-master | Resolution:
Keywords: libopenjpeg | Blocked By:
regression | Reproduced by developer: 1
Blocking: |
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Comment (by bud):
right,
ffmpeg git + libopenjpeg 1.3+dfsg-4.8
seems to work. not perfectly though! the first num_threads pictures are
freakishly small, compressed much more then the following pictures.
here the ls -1s of './ffmpeg -i in.mov -an -compression_level 100 -threads
10 folder/%06d.j2c'
41K 000001.j2c
145K 000002.j2c
145K 000003.j2c
145K 000004.j2c
145K 000005.j2c
145K 000006.j2c
145K 000007.j2c
145K 000008.j2c
145K 000009.j2c
145K 000010.j2c
1,1M 000011.j2c
1,1M 000012.j2c
1,1M 000013.j2c
1,1M 000014.j2c
1,1M 000015.j2c
1,1M 000016.j2c
1,1M 000017.j2c
1,1M 000018.j2c
1,1M 000019.j2c
1,1M 000020.j2c
1,1M 000021.j2c
1,1M 000022.j2c
1,1M 000023.j2c
1,1M 000024.j2c
1,1M 000025.j2c
1,1M 000026.j2c
1,1M 000027.j2c
1,1M 000028.j2c
1,1M 000029.j2c
1,2M 000030.j2c
1,2M 000031.j2c
....
bud
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Ticket URL: <https://trac.ffmpeg.org/ticket/3754#comment:12>
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