[FFmpeg-trac] #328(undetermined:open): PGM to JPEG-LS identify error

FFmpeg trac at avcodec.org
Mon Jul 4 11:27:59 CEST 2011


#328: PGM to JPEG-LS identify error
------------------------+---------------------------
Reporter:  sebastian0   |       Owner:  michael
    Type:  defect       |      Status:  open
Priority:  normal       |   Component:  undetermined
 Version:  unspecified  |  Resolution:
Keywords:               |  Blocked By:
Blocking:               |  Reproduced:  0
Analyzed:  0            |
------------------------+---------------------------

Comment (by cehoyos):

 (Please note that you are not using latest git head and, unfortunately,
 the version you are using is not supported, only the branches master and
 oldabi and currently the releases 0.7.1 and 0.8 are.)
 I tested the following:
 {{{
 ./ffmpeg -i tests/lena.pnm -f image2 -pix_fmt gray16le -vcodec jpegls
 out.jls
 ffmpeg version N-31202-g976a8b2, Copyright (c) 2000-2011 the FFmpeg
 developers
   built on Jul  4 2011 10:37:33 with gcc 4.5.3
   configuration: --cc=/usr/local/gcc-4.5.3/bin/gcc --enable-gpl --enable-
 libopencore-amrnb --enable-version3
   libavutil    51. 11. 0 / 51. 11. 0
   libavcodec   53.  7. 0 / 53.  7. 0
   libavformat  53.  5. 0 / 53.  5. 0
   libavdevice  53.  2. 0 / 53.  2. 0
   libavfilter   2. 24. 1 /  2. 24. 1
   libswscale    2.  0. 0 /  2.  0. 0
   libpostproc  51.  2. 0 / 51.  2. 0
 Input #0, image2, from 'tests/lena.pnm':
   Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
     Stream #0.0: Video: ppm, rgb24, 256x256, 25 tbr, 25 tbn, 25 tbc
 [buffer @ 0x12cbd60] w:256 h:256 pixfmt:rgb24 tb:1/1000000 sar:0/1
 sws_param:
 [buffersink @ 0x12cb1e0] auto-inserting filter 'auto-inserted scaler 0'
 between the filter 'src' and the filter 'out'
 [scale @ 0x12c4720] w:256 h:256 fmt:rgb24 -> w:256 h:256 fmt:gray16le
 flags:0x4
 Output #0, image2, to 'out.jls':
   Metadata:
     encoder         : Lavf53.5.0
     Stream #0.0: Video: jpegls, gray16le, 256x256, q=2-31, 200 kb/s, 90k
 tbn, 25 tbc
 Stream mapping:
   Stream #0.0 -> #0.0
 Press [q] to stop, [?] for help
 frame=    1 fps=  0 q=0.0 Lsize=      -0kB time=00:00:00.04 bitrate=
 -4.4kbits/s
 video:99kB audio:0kB global headers:0kB muxing overhead -100.021595%
 }}}
 The resulting file out.jls decodes fine with ffmpeg and the UBC
 implementation of jpeg-ls, V.2.2

-- 
Ticket URL: <https://avcodec.org/trac/ffmpeg/ticket/328#comment:5>
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