There is a list of default applications in system configuration > details.
I changed the default video application from the movie player Totem to VLC media player, but I can't see any change or effect of this. For example, .avi files are still being launched with the default movie player "Totem".
Of course, I can change this by right clicking the file, going to properties > open with > and setting VLC media player as my new default application to open that type of files. But, do I need to do this for all the video file formats in my PC? I was expecting the default application list to do this for me.