Google Chrome Bookmarklet: Download YouTube Videos in Google Chrome (JavaScript Plug-in)

YouTube is a video sharing website on which users can upload and share videos, uses Adobe Flash Videotechnology to display a wide variety of user-generated video content, including movie clips, TV clips, and music videos, as well as amateur content such as video blogging and short original videos.

If you want to download YouTube Video/Movie in Google Chrome, you can try following Bookmarklet(Javascript plugins), it will instantly get the video URL from the webpage even if it's not yet finished loading. No Website or software is needed. It's a bookmarklet(a bookmark containing JavaScript) in practice, you can also use it in FireFox, Safari orInetnet Explorer.

Install Google Chrome Plug-in: Download YouTube Video/Movie in Google Chrome

Install this Javascript Plug-in is very easy, please do following steps:

1. Make sure your Google Chrome browser always shows the Bookmarks bar. You can click menuTools -> Always show bookmarks bar, the hotkey is Ctrl + B.
2. Right click on the bookmarks bar, and then select Add Page.
3. In the Name field, enter "Download YouTube Video" or something you will remember, then for theURL field paste:

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'];

Update: Nov 23, 2009: YouTube has modified the video parameters, the code above can't work now, use this:

javascript:window.location.href = 'http://youtube.com/get_video?video_id=' + yt.getConfig("SWF_ARGS")['video_id'] + "&sk=" + yt.getConfig("SWF_ARGS")['sk'] + '&t=' + yt.getConfig("SWF_ARGS")['t'];


4. Click OK button.

How to use Plug-in to download YouTube Video in Google Chrome

Now, the Javascript plugin is installed in your Google Chrome. Go to the YouTube video you want to download, when it starts playing click your "Download YouTube Video" bookmark and you will see the.flv file start to download in Google Chrome's download status bar.