OGG support

I tried to edit a *.ogg video plus audio file with kdenlive 0.5, but the program could only play the sound while the viewer remained black. Any idea what I can do?

Check if MLT is compiled with ogg support.
I can play any ogg file without problem.

Thanks. How do I check this?

I took mlt and mlt++ from ubuntu gutsy's repos.

Check this page:

http://en.wikibooks.org/wiki/Kdenlive/Troubleshooting

Create a small script with an ogg file.
Then run inigo myscript to verify if it plays the sound.

I don't know any way to check how MLT is compiled other than ./configure.
Also check that ffmpeg has ogg support:

Quote:
$ffmpeg
FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et al.
configuration: --prefix=/usr --libdir=${prefix}/lib --shlibdir=${prefix}/lib --incdir=${prefix}/include/ffmpeg --enable-shared --enable-libmp3lame --enable-gpl --enable-libfaad --mandir=${prefix}/share/man --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-pp --enable-libamr-nb --enable-libamr-wb --enable-x11grab --enable-libogg --enable-libgsm --enable-libx264 --enable-liba52 --enable-libtheora --extra-cflags=-Wall -g -fPIC -DPIC --cc=ccache cc --enable-swscaler
libavutil version: 49.5.0
libavcodec version: 51.41.0
libavformat version: 51.12.2
built on Aug 23 2007 11:25:16, gcc: 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)
usage: ffmpeg [[infile options] -i infile]... {[outfile options] outfile}...
Hyper fast Audio and Video encoder

performed your check, the error is in mlt. but why would it have been compiled without ogg support?

Try to compile MLT from sources (SVN). Then open a bug on Ubuntu and contact the maintainer. Cheers, Jean-Michel