1. Go to the Youtube video page you want to download.
2. Set the quality of the video you want to download.
3. Right Click on the page.
4. Click on Inspect Element
5. Then go to the Resources Tab
6. Click on Enable Resource Tracking
7. Go to the Others tab.
8. Find "videoplayback" on the resources list. This is the one usually with the longest bar. Then double cllick it, or drag it into the window.
9. Your download will start. Usually, the download will be instant, since the video started to load.
10. Rename your downloaded file, and put a .flv extension to it.
Important
Make sure you have permisssion to download the video and it is not covered by Copyright Law.
How to download Youtube Videos with Google Chrome - No Extension Needed
on Wednesday, 12 October 2011