If you play any Youtube video all the way through, it should already be on your PC.
It will usually be in the default browser cache, unless it has been restricted by your browser settings or by any browser add-ons.
For example with Firefox, it will be in the default location for the cache:
C:\Documents and Settings\Your-Name\Local Settings\Application Data\Mozilla\Firefox\Profiles\7zh1jg91.default\Cache.
All you have to do is make a note of the download time, then when the playback has finished, visit the cache and rename the file by adding an .flv extension.
It may be possible in some cases that certain files may be MP4, but most that I have saved, or maybe all have been .flv file extensions.
That is assuming that you have an flv player, but if not, there are a few available via Google.
It will usually be in the default browser cache, unless it has been restricted by your browser settings or by any browser add-ons.
For example with Firefox, it will be in the default location for the cache:
C:\Documents and Settings\Your-Name\Local Settings\Application Data\Mozilla\Firefox\Profiles\7zh1jg91.default\Cache.
All you have to do is make a note of the download time, then when the playback has finished, visit the cache and rename the file by adding an .flv extension.
It may be possible in some cases that certain files may be MP4, but most that I have saved, or maybe all have been .flv file extensions.
That is assuming that you have an flv player, but if not, there are a few available via Google.
Real knowledge is to know the extent of one's ignorance - Confucius
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