Its interface is very simple and makes it very easy to use. It's perfect for novice users who are not used to deal with lots of buttons and options.
It takes the most out of Qt libraries. I supports local files and online media files too, so you can watch streaming videos without any problem, you'll only have to enter the URL. DVDs and VCDs are also welcome.
If you are searching for a good media player supporting Qt libraries, you'll welcome KMPlayer.