[FFmpeg-trac] #158(undetermined:new): mpeg2video (4:2:2) + vlowres = colorful "noise"

[FFmpeg]

#158: mpeg2video (4:2:2) + vlowres = colorful "noise"
--------------------------+--------------------------
 Reporter:  ami_stuff     |        Type:  defect
   Status:  new           |    Priority:  normal
Component:  undetermined  |     Version:  unspecified
 Keywords:                |  Blocked By:
 Blocking:                |  Reproduced:  0
 Analyzed:  0             |
--------------------------+--------------------------
 I just wonder if it would be possible to eliminate this colorful "noise"
 when vlowres option is enabled?

 If this is not possible then please close this ticket.

 ffplay -vlowres 1 trailer.gxf

 http://samples.multimedia.cx/GXF/trailer.gxf

 {{{
 C:\>ffmpeg -i C:\trailer.gxf
 FFmpeg version git-N-29181-ga304071, Copyright (c) 2000-2011 the FFmpeg
 develope
 rs
   built on Apr 18 2011 21:24:03 with gcc 4.5.2
   configuration: --enable-gpl --enable-version3 --enable-runtime-cpudetect
 --ena
 ble-memalign-hack --enable-avisynth --enable-bzlib --enable-frei0r
 --enable-libo
 pencore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-
 libgsm --
 enable-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-
 libschroedinger
  --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx
 --enabl
 e-libx264 --enable-libxavs --enable-libxvid --enable-zlib --cross-
 prefix=i686-w6
 4-mingw32- --target-os=mingw32 --arch=x86_32 --extra-
 cflags=-I/home/kyle/softwar
 e/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
 Input #0, gxf, from 'C:\trailer.gxf':
   Duration: 00:00:29.80, start: 0.000000, bitrate: 11593 kb/s
     Stream #0.0: Video: mpeg2video (4:2:2), yuv422p, 720x608 [PAR 152:135
 DAR 4:
 3], 10000 kb/s, 50 fps, 25 tbr, 50 tbn, 50 tbc
     Stream #0.1: Audio: pcm_s16le, 48000 Hz, 1 channels, s16, 768 kb/s
     Stream #0.2: Audio: pcm_s16le, 48000 Hz, 1 channels, s16, 768 kb/s
     Stream #0.3: Data: [0][0][0][0] / 0x0000
 At least one output file must be specified
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/158>
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