After having one of those ‘Download Video from YouTube’ sites many moons ago, i thought i’d check the code and see what could be done for Chrome as yes it can be done.

Create a new bookmark and call it “Download YouTube” or something you will remember, then for the address field paste:

Quote:

javascript:window.location.href = ‘http://youtube.com/get_video?video_id=’ + swfArgs['video_id']+ “&l=” + swfArgs['l'] + “&sk=” + swfArgs['sk'] + ‘&fmt_map’ + swfArgs['fmt_map'] + ‘&t=’ + swfArgs['t'];

Then save your bookmark. Next go to the YouTube video you want to download, when it starts playing click your “Download YouTube” bookmark and you will see the .flv start to download in Chrome’s download status bar.

Download Youtube Videos in MP4
With a bit of tinkering around with the above code, also downloading the video in MP4 is possible.

Same as above, create a new bookmark (It’s probably best to name the above Download YouTube in FLV and then name this one Download YouTube in MP4) then add the following code in the address field:

Quote:

javascript:window.location.href = ‘http://youtube.com/get_video?video_id=’ + swfArgs['video_id']+ “&fmt=18″ + “&l=” + swfArgs['l'] + “&sk=” + swfArgs['sk'] + ‘&fmt_map’ + swfArgs['fmt_map'] + ‘&t=’ + swfArgs['t'];

Save then use the same way as the above.