Just download any video from youtube and before the complete movie ;plays it will stop.
Sometimes videostreaming starts and sometimes it just sits there and then i look at where it stopped streaming but the time is still going so i have to move the poorly functioning cursor back. I try to get mp4 videos from youtube but sometimes i get flv but they seem to play just as well as the mp4 ones. I hate to decrease the quality as these are old film noir movies I am watching but it happens with newer movies also.