regression with dv in avi

[ami_stuff]

​http://www.datafilehost.com/download-40a287fd.html

I just wanted to test lowres with dvvideo and here we go, another regression.

c225615 24-Apr-2011 - ok
03546a9 25-Apr-2011 - bad

C:\>ffmpeg -i C:\dvvideo.avi -an out.avi
ffmpeg version git-N-29471-g94da542, Copyright (c) 2000-2011 the FFmpeg developers
  built on Apr 29 2011 02:17:31 with gcc 4.5.0 20100414 (Fedora MinGW 4.5.0-1.fc14)
  configuration: --prefix=/var/www/users/research/ffmpeg/snapshots/build --arch=
x86 --target-os=mingw32 --cross-prefix=i686-pc-mingw32- --cc='ccache i686-pc-min
gw32-gcc' --enable-w32threads --enable-memalign-hack --enable-runtime-cpudetect
--enable-cross-compile --enable-static --disable-shared --extra-libs='-lws2_32 -
lwinmm' --extra-cflags='--static -I/var/www/users/research/ffmpeg/snapshots/buil
d/include' --extra-ldflags='-static -L/var/www/users/research/ffmpeg/snapshots/b
uild/lib' --enable-bzlib --enable-zlib --enable-gpl --enable-version3 --enable-n
onfree --enable-libx264 --enable-libspeex --enable-libtheora --enable-libvorbis
--enable-libfaac --enable-libxvid --enable-libopencore-amrnb --enable-libopencor
e-amrwb --enable-libmp3lame --enable-libvpx --disable-decoder=libvpx
  libavutil    51.  1. 0 / 51.  1. 0
  libavcodec   53.  1. 1 / 53.  1. 1
  libavformat  53.  0. 3 / 53.  0. 3
  libavdevice  53.  0. 0 / 53.  0. 0
  libavfilter   2.  1. 0 /  2.  1. 0
  libswscale    0. 13. 0 /  0. 13. 0
[avi @ 0x207f280] Could not find codec parameters (Audio: pcm_s16le, 48000 Hz, 2
 channels, 1536 kb/s)
[avi @ 0x207f280] Estimating duration from bitrate, this may be inaccurate
Input #0, avi, from 'C:\dvvideo.avi':
  Duration: 00:00:12.64, start: 0.000000, bitrate: 30336 kb/s
    Stream #0.0: Video: dvvideo, yuv420p, 720x576, 28800 kb/s, PAR 16:15 DAR 4:3
, 25 tbr, 25 tbn, 25 tbc
    Stream #0.1: Audio: pcm_s16le, 48000 Hz, 2 channels, 1536 kb/s
[buffer @ 0x1b01ea0] w:720 h:576 pixfmt:yuv420p
Output #0, avi, to 'out.avi':
  Metadata:
    ISFT            : Lavf53.0.3
    Stream #0.0: Video: mpeg4, yuv420p, 720x576 [PAR 16:15 DAR 4:3], q=2-31, 200
 kb/s, 25 tbn, 25 tbc
Stream mapping:
  Stream #0.0 -> #0.0
Press [q] to stop encoding
frame=    0 fps=  0 q=0.0 Lsize=       6kB time=10000000000.00 bitrate=   0.0kbi
ts/s
video:0kB audio:0kB global headers:0kB muxing overhead inf%

[reimar]

Two different patches sent to ffmpeg-devel that both fix the issue, one of the with the added benefit that packets from DV formats get proper pos values.

[Carl Eugen Hoyos]

Fixed by Reimar in 1a9f9f81b1244b952126bb65bc741b04d3534f81.