I cannot play H.265/HEVC videos. While trying to play video I get an error "Audience needs video/x-unknown decoder to play this file". Here's a screenshot of an error.

error image

If I click on install video decoder, again it gives me an error "plugin not found". How can solve this problem?

1 Answer 1


There is a PPA for libde265 GStreamer integration.

sudo apt-add-repository ppa:strukturag/libde265
sudo apt-get update

New install the plugin:

sudo apt-get install gstreamer0.10-libde265 gstreamer1.0-libde265

After installation of the plugin, all players using the GStreamer framework (this includes the default player “Videos”) will be able to playback HEVC/H.265 content.

There is also a VLC plugin available:

sudo apt-add-repository ppa:strukturag/libde265
sudo apt-get install vlc-plugin-libde265

Source: GStreamer plugin for 4K H.265/HEVC video streaming

  • I'd like to install vlc plugin. I have added the suggested repo, but after sudo apt-get install vlc-plugin-libde265 get E: Unable to locate package vlc-plugin-libde265 error. What could be the problem? (I'm on elementary OS 5, VLC 3.071)
    – a-tokarev
    Commented Aug 19, 2019 at 13:25

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