This is a typical symptom if you try to use the mplayer binary from ubuntu ffmpeg trunk.
please make sure that you don't have a local version of avcodec in /usr/local/. ** Changed in: mplayer (Ubuntu) Status: New => Invalid -- neither mplayer or vlc does not show any videos https://bugs.launchpad.net/bugs/442195 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs