[FFmpeg-trac] #163(undetermined:new): png output creates artifacts or blank image with x11grab input

FFmpeg trac at avcodec.org
Sat May 7 00:14:09 CEST 2011


#163: png output creates artifacts or blank image with x11grab input
---------------------+--------------------------
  Reporter:  llogan  |      Owner:
      Type:  defect  |     Status:  new
  Priority:  normal  |  Component:  undetermined
   Version:  git     |   Keywords:  x11grab, png
Blocked By:          |   Blocking:
Reproduced:  0       |   Analyzed:  0
---------------------+--------------------------
 jpg output works as expected. out20110506.png attached.
 {{{
 $ ffmpeg -f x11grab -r 25 -s 800x600 -i :0.0 -vframes 1 out20110506.png
 ffmpeg version git-N-29638-g95f163b, Copyright (c) 2000-2011 the FFmpeg
 developers
   built on May  6 2011 14:01:20 with gcc 4.6.0 20110415 (prerelease)
   configuration: --prefix=/usr --disable-optimizations --enable-x11grab
 --enable-gpl
   libavutil    51.  2. 1 / 51.  2. 1
   libavcodec   53.  3. 0 / 53.  3. 0
   libavformat  53.  0. 3 / 53.  0. 3
   libavdevice  53.  0. 0 / 53.  0. 0
   libavfilter   2.  4. 0 /  2.  4. 0
   libswscale    0. 14. 0 /  0. 14. 0
 [x11grab @ 0x1aacd40] device: :0.0 -> display: :0.0 x: 0 y: 0 width: 800
 height: 600
 [x11grab @ 0x1aacd40] shared memory extension found
 [x11grab @ 0x1aacd40] Estimating duration from bitrate, this may be
 inaccurate
 Input #0, x11grab, from ':0.0':
   Duration: N/A, start: 1304719812.085890, bitrate: 384000 kb/s
     Stream #0.0: Video: rawvideo, bgra, 800x600, 384000 kb/s, 25 tbr,
 1000k tbn, 25 tbc
 [buffer @ 0x1abb160] w:800 h:600 pixfmt:bgra
 Output #0, image2, to 'out20110506.png':
   Metadata:
     encoder         : Lavf53.0.3
     Stream #0.0: Video: png, bgra, 800x600, q=2-31, 200 kb/s, 90k tbn, 25
 tbc
 Stream mapping:
   Stream #0.0 -> #0.0
 Press [q] to stop encoding
 frame=    1 fps=  0 q=0.0 Lsize=      -0kB time=0.04 bitrate=  -4.4kbits/s
 video:72kB audio:0kB global headers:0kB muxing overhead -100.029685%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/163>
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