These files are used for application launchers and for creating menus of applications that can be launched. Those extra entries will appear as options when you right-click on the video file and go to the Open With submenu.If you don't have the VLC Desktop Entry file, or it disappears for some reason you will have to make one. Tip: Nautilus don't show the real names of the Desktop Entry files.A Desktop Entry file is a data file that provides information about an item in a menu. So what you have to do is: For example: Registry of MIME Type (video/quicktime) in mimeinfo.cache to use VLC.The desktop entry specification describes desktop entries as files describing information about an application such as the name, MIME Types it handles, icon, and description. video/quicktime=livna-vlc.desktop;totem.desktop;miro.desktop; The format is: [MIME Type]=[Name of the Desktop Entry file] Note: You can put more than one Desktop Entry, but they need to be separated by a semi-colon (;), see the example above.If you have another Internet browser installed, you may need to disable the default browser options for that browser.
During set-up, VLC will ask you if you want to associate certain media file types (such as .mp3, .flv, .wav) with VLC; for each "association" chosen opening that file type will launch it in VLC.Make sure that the security level is not set to High or to a custom level that doesn't allow viewing of Active X controls.Typically, the default security level (medium) allows you to view Flash content.For a custom level, ensure that both Download Signed Active X Controls and Run Active X Controls And Plug-ins are set to Prompt.
For example, in Internet Explorer: Some Internet utilities function similar to a firewall and can restrict viewing of Active X controls. Ensure that firewall or utility settings are set to allow Active X controls, Flash Player content, and the website you are visiting.
Click on the Interface button on the left panel and then click on Set up associations... Right-click on the type of file you want to always open with VLC. In the 'Open With' section, select VLC from the drop-down menu.