HOW TO play videos from mobile YouTube on your desktop Firefox browser
If want to check a YouTube video without waiting for it to buffer while you're on a low bandwidth Internet connection or just want to preview a video quickly on a decent connection, you can try out the mobile version of YouTube.
However, the videos on m.youtube.com use the Real Time Streaming Protocol (RSTP) to show videos in 3gp format so it won't normally play on a desktop browser. You can copy this URL to play it in VLC Media Player. Alternatively you can use the Vlc context menu Firefox add-on to the add URLs of mobile YouTube video files to VLCs playlist via the context menu of your Firefox browser.
|Open m.youtube.com in Firefox and search for the video you want to watch. After you locate it, right click on the Watch Video link & choose Add URL to VLC Playlist option|
Is the Vlc context menu Firefox add-on safe to use? I don't know. It has been in the Mozilla Add-on directory since August, 2010 with 7 user reviews and 30K+ users so it's probably safe.
Also see: Low bandwidth? Try mobile version of popular websites on PC/laptop