Keep in mind that YouTube does not want you to steal their videos, so they disguise the file somewhat. Also remember that when most video is played over the Internet, it is progressively downloaded into your Temp Internet Files file. On YouTube for example, you see a status bar indicating the download progress, as well as a playback position indicator. Once the download progress bar reaches the end, it’s on your machine, and playing back from there, not YouTube.
To make it easier to spot the file, delete everything from the Temp Internet file. Then go straight to YouTube and select and play a video (note the download progress bar). As soon as the file has finished downloading, go to your Temp Internet file and look for something coming from YouTube that has a very large file size (like the video will have), that’s a dead giveaway that it’s a video file. If your files are sorted by size, that makes it easy, just scroll to the bottom of the page. The file will NOT have an easy to recognize name and it will NOT have a .flv extension (see attached photo).
But that’s the file!
To verify that it’s a video file, copy that file into the work folder with your video player videos, change the file name to something like “youtube_test.flv” and away you go. Just be sure to give it the .flv extension.
OK, so if that’s the video file, The file name is in the first column and it's URL is right next to it (see photo). It’s really, really long and I’m not exactly sure if it will work or if they have thrown up other roadblocks, such as the file name changing after a certain amount of time. But give it a try, I’d be curious to know.
Keep on Truckin’