The best program I have seen that can do this is MiniTube. It allows you to search YouTube without using a web browser and also allows you to watch YouTube videos without having to use Flash. MiniTube will also let you download the video you are watching and save it to the directory of your choice.
Features of RealPlayer Cloud include the ability to take a video with a smartphone and quickly view it on a large-screen television using a Roku box. RealNetworks is also working on Google Chromecast integration.
I still was not able to play .rmvb files in either xine or mplayer-based media players (I got sound but no video, exactly as the OP described). Next, in order to have the realplayer libraries, I installed:
RealPlayer-10.0.9-51.1
And again nothing changed. So now the system is the same as it was before, except that I am using the packman versions of the ffmpeg programs, that is:
libffmpeg0-0.4.9svn-20080906.pm.0
ffmpeg-0.4.9svn-20080906.pm.0
While realplayer used to be a quite good player the last version really let me down. First of all I didn't like the sound quality all that much and like Eddie and Stilgar writes above, there is too many ads and stuff. I've unstilled it and will never use it again. Am I too negative?
I started using Linux Ubuntu 3 months ago. I installed the program "Music Player". It can stream directly to my PS3 with no problems. It updates my Last.fm account, and it plays multiple file formats. It is highly recommended.
The service works using new or updated Real apps on Android devices, iPhones, iPads, Windows PCs and Roku TV set-top boxes. A Mac app is in the works, but meanwhile it can work, with some limitations, in a Web browser on a Mac (or any device with a browser).
Additionally, since you are using the K-Lite codec pack (which I highly recommend with MPC-HD instead of VLC), in the Standard, Full, Mega releases is MediaInfo Lite. This will give you the FourCC codec code reported by the file, and should make it easier to find. I think you can also use it to edit the FourCC code as well.