id	summary	reporter	owner	description	type	status	priority	component	version	resolution	keywords	cc	blockedby	blocking	reproduced	analyzed
128	svq1 decoder is somehow buggy	ami_stuff		"ftp://ftp.pigwa.net/stuff/other/vcsclip.mov

please compare attached screenshot (left = ffplay / right = qt player)

I found this with google, maybe related?

> [Ffmpeg-user] A small but disastrous bug in SVQ1 Decoder
>
> Hi, I am using ffmpeg repository source code for developing Sorenson
> decoder and encountered a ""break"" statement missing in
> ""avcodec_align_dimensions()"" function under ""switch case
> PIX_FMT_YUV410P"" in file ""utils.c"". Due to this every time when
> controls come to ""case PIX_FMT_YUV410P"" instead of breaking after
> executing the required commands, it goes to the default case and
> reset the values of w_align & h_align to 1. Which eventually change
> the file size of output yuv file, resulting in corrupted output.
> 
> 
> Please add the necessary ""break"" statement in appropriate switch case
> in the new version.


{{{
C:\>ffmpeg -i C:\vcsclip.mov
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
[mov,mp4,m4a,3gp,3g2,mj2 @ 01CEC000] max_analyze_duration reached

Seems stream 0 codec frame rate differs from container frame rate: 600.00 (600/1
) -> 12.00 (12/1)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\vcsclip.mov':
  Metadata:
    creation_time   : 2000-08-17 00:28:08
    album           : Digital 2600
    album-eng       : Digital 2600
    artist          : Kevin Rodgers & Markus Karlus
    artist-eng      : Kevin Rodgers & Markus Karlus
    copyright-eng   : [C] 2000
    comment         : goldenshower@uia.com.br ]]]] www.goldenshower.gs
    copyright       : [C] 2000
    comment-eng     : goldenshower@uia.com.br ]]]] www.goldenshower.gs
  Duration: 00:02:52.53, start: 0.000000, bitrate: 338 kb/s
    Stream #0.0(eng): Video: svq1, yuv410p, 320x240, 289 kb/s, 12 fps, 12 tbr, 6
00 tbn, 600 tbc
    Metadata:
      creation_time   : 2000-08-17 00:28:08
    Stream #0.1(eng): Audio: qdm2, 44100 Hz, 1 channels, s16, 48 kb/s
    Metadata:
      creation_time   : 2000-08-17 00:28:08
At least one output file must be specified
}}}
"	defect	open	normal	avcodec	git-master		svq1				0	0