Youtube videos, question

[Marshal Murat]

When I load Youtube, sometimes it brings up a full bar if I've seen it before, sometimes not.
I wanted to know...
A)Is it stored on my cookies?
B)If not, where on my computer?

[Lemur]

Partial answer -- YouTube is scripted almost entirely in Python, and all video plays through Flash, which does cache data. I'm doing a little reading, but from what I'm seeing, where and how Flash caches is a subject of much pain and argument.

[edit, solution removed as two better ones are posted below]

[Sasaki Kojiro]

Use the Unplug (https://addons.mozilla.org/firefox/2254/) firefox addon and download the videos with just a click.

[Lemur]

Oh, sure, if you want to do it the easy way ...

[LeftEyeNine]

There are also websites such as www.keepvid.com where you enter the Youtube URL of the video so that it can save the streaming file to your HDD in .flv format. There is also a FLV player to play them.

[Quietus]

When I load Youtube, sometimes it brings up a full bar if I've seen it before, sometimes not.
I wanted to know...
A)Is it stored on my cookies?
B)If not, where on my computer? Or You can save the videos in your Firefox cache folder.