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Some MKV videos are not working and I get this message:

Could not find GStreamer caps mapping for FFmpeg codec 'h264', and you are using an external libavcodec. This is most likely due to a packaging problem and/or libavcodec having been upgraded to a version that is not compatible with this version of gstreamer-ffmpeg. Make sure your gstreamer-ffmpeg and libavcodec packages come from the same source/repository.

How can I fix the gstreamer-ffmpeg issue in Ubuntu 12.04? These videos are working with VLC, but I rather use the Totem player as it is much more responsive.

marked as duplicate by WinEunuuchs2Unix, Eric Carvalho, Elder Geek, David Foerster, Byte Commander Dec 23 '16 at 22:43

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  • 1
    @PatrickNegus that's for 14.04, not 12.04. – TheWanderer Dec 15 '16 at 0:58
  • What's the output of apt-cache policy gstreamer0.10-ffmpeg libavcodec53 libavcodec-extra-53? – David Foerster Dec 23 '16 at 1:03

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