This can be caused by the metadata stored in the file. Run mplayer -identify -frames 0 on the file you are having issues with and look for ID_LENGTH. Most likely this will list the value you are seeing in the GUI.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/791011 Title: Gnome-mplayer displays wrong duration -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
