מצאתי את ההסבר הזה - לא ניסיתי
1. replace the www in the URL with m. e.g. http://www.facebook.com/blahblah - http://m.facebook.com/blahblah
2. this brings you to the FB mobile site, once there click on your video. 3. While the video is playing if you are on a pc right click on the video screen and select "save video as"
 
