Green artefacts when decoding svq1

[Carl Eugen Hoyos]

(videolan ticket 11351)

A user uploaded a svq1 sample that shows green artefacts since a05a44e2

$ ffmpeg -i Chrono\ Trigger\ -\ Ending\ 2.mov -an out.avi
ffmpeg version N-62727-g66e30a2 Copyright (c) 2000-2014 the FFmpeg developers
  built on Apr 26 2014 23:35:28 with gcc 4.7 (SUSE Linux)
  configuration: --enable-gpl
  libavutil      52. 79.100 / 52. 79.100
  libavcodec     55. 59.100 / 55. 59.100
  libavformat    55. 37.101 / 55. 37.101
  libavdevice    55. 13.100 / 55. 13.100
  libavfilter     4.  4.100 /  4.  4.100
  libswscale      2.  6.100 /  2.  6.100
  libswresample   0. 18.100 /  0. 18.100
  libpostproc    52.  3.100 / 52.  3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Chrono Trigger - Ending 2.mov':
  Metadata:
    creation_time   : 1999-11-09 18:32:04
    copyright       : © 1999 Squarenet (Squarenet.org)
    copyright-eng   : © 1999 Squarenet (Squarenet.org)
    title           : Squarenet.org
    title-eng       : Squarenet.org
    comment         : Created for use on squarenet.org only.
    comment-eng     : Created for use on squarenet.org only.
  Duration: 00:00:31.40, start: 0.503333, bitrate: 407 kb/s
    Stream #0:0(eng): Video: svq1 (SVQ1 / 0x31515653), yuv410p, 293x178, 360 kb/s, 10.02 fps, 10 tbr, 600 tbn, 600 tbc (default)
    Metadata:
      creation_time   : 1999-11-09 18:32:04
      handler_name    : Apple Alias Data Handler
    Stream #0:1(eng): Audio: qdm2 (QDM2 / 0x324D4451), 44100 Hz, stereo, s16, 32 kb/s (default)
    Metadata:
      creation_time   : 1999-11-09 18:32:04
      handler_name    : Apple Alias Data Handler
Output #0, avi, to 'out.avi':
  Metadata:
    comment-eng     : Created for use on squarenet.org only.
    ICOP            : © 1999 Squarenet (Squarenet.org)
    copyright-eng   : © 1999 Squarenet (Squarenet.org)
    INAM            : Squarenet.org
    title-eng       : Squarenet.org
    ICMT            : Created for use on squarenet.org only.
    ISFT            : Lavf55.37.101
    Stream #0:0(eng): Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 293x178, q=2-31, 200 kb/s, 10 tbn, 10 tbc (default)
    Metadata:
      creation_time   : 1999-11-09 18:32:04
      handler_name    : Apple Alias Data Handler
Stream mapping:
  Stream #0:0 -> #0:0 (svq1 -> mpeg4)
Press [q] to stop, [?] for help
frame=  325 fps=0.0 q=2.0 Lsize=     883kB time=00:00:32.50 bitrate= 222.7kbits/s
video:870kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.541926%

[Michael Niedermayer]

Fixed in 421b21ca8a02a346ba03cea3bb2ecc33f791fc30