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I used the answer to this question to change the default software for opening video files to VLC player on Ubuntu 12.04. The settings say that this is now the default player and yet whenever I play the files they are still opening with Movie Player. Is there anything I can do to fix this or must I uninstall Movie Player ????

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What happens if you right click on the file and choose open with vlc? – Mitch Jul 12 '12 at 11:46
It plays, but that is not what I consider default really. I thought default would just play it in VLC on double click – mathematician1975 Jul 12 '12 at 11:50
Try to right click on the file, choose properties, open with, and click on set default button, and see if it works. – Mitch Jul 12 '12 at 11:58
For formats like avi, mp4, flv , etc you need to specify once by right clicking it to open with VLC with each available Video Format you have. – atenz Jul 12 '12 at 12:08
Thanks that works as intended now. – mathematician1975 Jul 12 '12 at 12:30
up vote 4 down vote accepted

You can right click on a file, go to the last entry (Properties) and select in the new window the 'Open with' tab.

There you see the standard-application, the recommended app and other apps for opening this file.

In the list of other applications, you can select which application to use for opening the movie. (VLC media player)

Now the file should be opened by VLC.

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Thanks that works perfectly. – mathematician1975 Jul 12 '12 at 12:30

A more global solution. The file /usr/share/applications/defaults.list has the bindings of the file extension v/s application to use for that extension.

for the video types you need jus replace the current entry for exmaple video/3gpp=totem.desktop to video/3gpp=vlc.desktop.

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