Hi, Same here:
*** root@stt008:/etc/apt# export LANGUAGE=en_US.UTF-8; apt-get -t wheezy-backports install gstreamer1.0-libav Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: gstreamer1.0-libav : Depends: libavcodec54 (>= 6:9.1-1) but it is not installable or libavcodec-extra-54 (>= 6:9.13) but it is not installable Depends: libavformat54 (>= 6:9.1-1) but it is not installable Depends: libavutil52 (>= 6:9.1-1) but it is not installable E: Unable to correct problems, you have held broken packages. *** I'm trying to get Firefox playing nicely with mp4 files but this bug prevented me from doing so :-) Hope it gets fixed any soon. Greetings, -- Camaleón