[FFmpeg-trac] #829(undetermined:new): jpg: bad quality with progressive rgb file
FFmpeg
trac at avcodec.org
Sun Dec 25 17:50:03 CET 2011
#829: jpg: bad quality with progressive rgb file
-------------------------------------+-------------------------------------
Reporter: ami_stuff | Type: defect
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
imagemagick/firefox decodes attached file correctly
{{{
C:\>ffmpeg -i rgb_progressive.jpg out.bmp
ffmpeg version N-35966-g1d0ae92, Copyright (c) 2000-2011 the FFmpeg
developers
built on Dec 19 2011 13:01:15 with gcc 4.6.2
configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-ru
ntime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-
libope
ncore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-
libgsm --en
able-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-
libschroedinger -
-enable-libspeex --enable-libtheora --enable-libvo-aacenc --enable-libvo-
amrwben
c --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs
--enable-
libxvid --enable-zlib
libavutil 51. 32. 0 / 51. 32. 0
libavcodec 53. 46. 1 / 53. 46. 1
libavformat 53. 27. 0 / 53. 27. 0
libavdevice 53. 4. 0 / 53. 4. 0
libavfilter 2. 53. 0 / 2. 53. 0
libswscale 2. 1. 0 / 2. 1. 0
libpostproc 51. 2. 0 / 51. 2. 0
Input #0, image2, from 'rgb_progressive.jpg':
Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
Stream #0:0: Video: mjpeg, gbrp, 1024x768, 25 tbr, 25 tbn, 25 tbc
Incompatible pixel format 'gbrp' for codec 'bmp', auto-selecting format
'bgr24'
[buffer @ 020E1820] w:1024 h:768 pixfmt:gbrp tb:1/1000000 sar:0/1
sws_param:
[buffersink @ 020E1AA0] auto-inserting filter 'auto-inserted scale 0'
between th
e filter 'src' and the filter 'out'
[scale @ 020E1EE0] w:1024 h:768 fmt:gbrp -> w:1024 h:768 fmt:bgr24
flags:0x4
Output #0, image2, to 'out.bmp':
Metadata:
encoder : Lavf53.27.0
Stream #0:0: Video: bmp, bgr24, 1024x768, q=2-31, 200 kb/s, 90k tbn,
25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg -> bmp)
Press [q] to stop, [?] for help
frame= 1 fps= 0 q=0.0 Lsize= 0kB time=00:00:00.04 bitrate=
0.0kbits/
s
video:2304kB audio:0kB global headers:0kB muxing overhead -100.000000%
}}}
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/829>
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