The VideoLAN Forums

Posted: **20 May 2008 02:06**

main decoder error: no suitable decoder module for fourcc `mjpg'.
VLC probably does not support this sound or video format.

I can't find out the solution to this problem. I have an application which uses jvlc. To run the application, an vlc installation is needed (0.9.0) and i have installed it (as well as ffmpeg). In the first machine everything went ok. in this second machine i think i done like in the first one but it gives me this error. both machines have Ubuntu 7.10 fresh installations...
after installing ubuntu 7.10 i installed many libraries which ffmpeg demanded, and then compiled and installed ffmpeg and then the same with vlc 0.9.0...

what am i missing? any help?
thanks in advance

--JH

Posted: **20 May 2008 16:13**

Can you paste the output of vlc -vvv --list | grep ffmpeg ?

Posted: **20 May 2008 17:50**

Here it is:

Code: Select all

root@weirdFP01:/usr/local/vlc# vlc -vvv --list | grep ffmpeg
VLC media player 0.9.0-git Grishenko
[00000001] main libvlc debug: VLC media player - version 0.9.0-git Grishenko - (c) 1996-2008 the VideoLAN team
[00000001] main libvlc debug: libvlc was configured with ./configure  '--enable-ffmpeg' '--with-ffmpeg-zlib' '--enable-faac' '--enable-faad2' '--enable-mostly-builtin' '--enable-dvb' '--enable-x264' '--disable-wxwidgets' '--disable-skins2' '--enable-debug' '--with-ffmpeg-faad' '--disable-glx'
[00000001] main libvlc debug: translation test: code is "C"
[00000001] main libvlc debug: checking builtin modules
[00000001] main libvlc debug: checking plugin modules
[00000001] main libvlc debug: loading plugins cache file /root/.cache/vlc/plugins-04041e.dat
[00000001] main libvlc debug: recursively browsing `modules'
[00000001] main libvlc warning: cannot load module `modules/codec/ffmpeg/.libs/libffmpeg_plugin.so' (modules/codec/ffmpeg/.libs/libffmpeg_plugin.so: undefined symbol: av_init_packet)
[00000001] main libvlc debug: recursively browsing `/usr/local/lib/vlc'
[00000001] main libvlc warning: cannot load module `/usr/local/lib/vlc/codec/libffmpeg_plugin.so' (/usr/local/lib/vlc/codec/libffmpeg_plugin.so: undefined symbol: a52_init)
[00000001] main libvlc debug: recursively browsing `plugins'
[00000001] main libvlc debug: module bank initialized, found 443 modules
[00000001] main libvlc debug: writing plugins cache /root/.cache/vlc/plugins-04041e.dat
root@weirdFP01:/usr/local/vlc#

Posted: **21 May 2008 17:07**

anyone?

Posted: **21 May 2008 20:17**

[00000001] main libvlc debug: recursively browsing `modules'
[00000001] main libvlc warning: cannot load module `modules/codec/ffmpeg/.libs/libffmpeg_plugin.so' (modules/codec/ffmpeg/.libs/libffmpeg_plugin.so: undefined symbol: av_init_packet)
[00000001] main libvlc debug: recursively browsing `/usr/local/lib/vlc'
[00000001] main libvlc warning: cannot load module `/usr/local/lib/vlc/codec/libffmpeg_plugin.so' (/usr/local/lib/vlc/codec/libffmpeg_plugin.so: undefined symbol: a52_init)
[00000001] main libvlc debug: recursively browsing `plugins'

This means that your ffmpeg plugin is miscompiled.

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main decoder error -> mjpg

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