[FFmpeg-trac] #75(avcodec:new): Chroma corruption with specific Fraps sample

[FFmpeg]

#75: Chroma corruption with specific Fraps sample
--------------------------+---------------------
 Reporter:  Snowknight26  |        Type:  defect
   Status:  new           |    Priority:  normal
Component:  avcodec       |     Version:  git
 Keywords:                |  Blocked By:
 Blocking:                |  Reproduced:  0
 Analyzed:  0             |
--------------------------+---------------------
 With a specific sample (http://stfcc.org/misc/fraps_chroma_corruption.avi
 - ~48MB), chroma corruption is produced on at least two different frames
 after the decoding process.

 With the same frame, note the difference between FFmpeg's output and the
 Fraps video decompresser's:
 FFmpeg: http://stfcc.org/misc/fraps_chroma_corruption_ffmpeg.png
 Fraps: http://stfcc.org/misc/fraps_chroma_corruption_fraps.png

 Below output was for converion to huffyuv so it could be viewed in ffplay
 (ffplay doesn't display video for Fraps it seems):

 {{{
 C:\temp\Encoding\test>ffmpeg.exe -v 9 -loglevel 99 -i
 fraps_chroma_corruption.avi -vcodec huffyuv -pix_fmt rgb32 -y output.avi
 FFmpeg version git-N-29181-ga304071, Copyright (c) 2000-2011 the FFmpeg
 developers
   built on Apr 18 2011 21:24:03 with gcc 4.5.2
   configuration: --enable-gpl --enable-version3 --enable-runtime-cpudetect
 --enable-memalign-hack --enable-avisynth --enable-bzlib --enable-frei0r
 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfreetype
 --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-librtmp
 --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-
 libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-
 libxvid --enable-zlib --cross-prefix=i686-w64-mingw32- --target-os=mingw32
 --arch=x86_32 --extra-cflags=-I/home/kyle/software/ffmpeg/external-
 libraries/win32/include --extra-ldflags=-L/home/kyle/software/ffmpeg
 /external-libraries/win32/lib --pkg-config=pkg-config
   libavutil    50. 40. 1 / 50. 40. 1
   libavcodec   52.120. 0 / 52.120. 0
   libavformat  52.108. 0 / 52.108. 0
   libavdevice  52.  4. 0 / 52.  4. 0
   libavfilter   1. 79. 0 /  1. 79. 0
   libswscale    0. 13. 0 /  0. 13. 0
 [NULL @ 018BBE60] Probed with size=2048 and score=100
 [avi @ 018BBE60] All info found
 Input #0, avi, from 'fraps_chroma_corruption.avi':
   Duration: 00:00:01.51, start: 0.000000, bitrate: 260416 kb/s
     Stream #0.0, 1, 1/60: Video: fraps, bgr24, 960x540, 1/60, 60 tbr, 60
 tbn, 60 tbc
 [buffer @ 01747A30] w:960 h:540 pixfmt:bgr24
 [ffsink @ 01747C30] auto-inserting filter 'auto-inserted scaler 0' between
 the filter 'src' and the filter 'out'
 [scale @ 01747E90] w:960 h:540 fmt:bgr24 -> w:960 h:540 fmt:bgra flags:0x4
 [huffyuv @ 01751A70] using huffyuv 2.2.0 or newer interlacing flag
 Output #0, avi, to 'output.avi':
   Metadata:
     ISFT            : Lavf52.108.0
     Stream #0.0, 0, 1/60: Video: huffyuv, bgra, 960x540, 1/60, q=2-31, 200
 kb/s, 60 tbn, 60 tbc
 Stream mapping:
   Stream #0.0 -> #0.0
 Press [q] to stop encoding
 frame=   91 fps= 60 q=0.0 Lsize=   70979kB time=1.52
 bitrate=383378.5kbits/s

 video:70971kB audio:0kB global headers:0kB muxing overhead 0.010824%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/75>
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