add support for (maybe broken) *.divx file

[ami_stuff]

​http://kakonacl.dip.jp/PlayerTry/TestMovies/Others/DivX6.11_MP3(Vidomi).divx

the file may be broken, but "Media Player Classic" and "VLC Player" can play it, so let it be playable with ffplay as well

C:\>ffmpeg -i C:\DivX6.11_MP3(Vidomi).divx
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
[avi @ 01CEC000] scale/rate is 0/0 which is invalid. (This file has been generated by broken software.)
[avi @ 01CEC000] unknown stream type 73627573
C:\DivX6.11_MP3(Vidomi).divx: Operation not permitted

[Carl Eugen Hoyos]

Plays fine with mplayer -demuxer avi

[reimar]

Do you have any other info on the file? Patch below allows playback, but the subtitle format is not xsub it seems, any idea what it might be??
diff --git a/libavformat/avidec.c b/libavformat/avidec.c
index 9395dc2..af8b023 100644
--- a/libavformat/avidec.c
+++ b/libavformat/avidec.c
@@ -532,6 +532,8 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)

case MKTAG('a', 'u', 'd', 's'):

codec_type = AVMEDIA_TYPE_AUDIO;
break;

+ case MKTAG('s', 'u', 'b', 's'):
+ st->codec->codec_id = CODEC_ID_XSUB;

case MKTAG('t', 'x', 't', 's'):

codec_type = AVMEDIA_TYPE_SUBTITLE;
break;

@@ -656,7 +658,8 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)

break;

case AVMEDIA_TYPE_SUBTITLE:

st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;

• st->request_probe= 1;

+ if (st->codec->codec_id == CODEC_ID_NONE)
+ st->request_probe= 1;

break;

default:

st->codec->codec_type = AVMEDIA_TYPE_DATA;

[ami_stuff]

Sorry no info (just a random file found with Google).

[ami_stuff]

It is acceptable to just ignore the unknown stream? Here is another file which plays with mplayer/vlc/xing/mpc, but not with ffplay (ffmpeg).

[Michael Niedermayer]

Replying to ami_stuff:

It is acceptable to just ignore the unknown stream? Here is another file which plays with mplayer/vlc/xing/mpc, but not with ffplay (ffmpeg).

patch applied