Has changed. But just a little change.
The previous methods were:
Open the YouTube video page with Chrome,
Open developer Tools to the network page
Refresh the current YouTube page
In Developertools's network page, sort by size, find a request of the largest size, which is often the one. Compare types, sometimes mp4 or flv
The URL of the request to the new page open, you will start to play the video on this page, if it is flv even directly downloaded into a file. If it is MP4, then do Save as ... from the File menu. File
In fact, this is for all Flash video Web pages are effective methods. Deft on hand, 5 seconds to fix it.
The problem now is that, according to incomplete investigation, YouTube's HTML5 video player is a segmented download video, and the audio is separate! , is also segmented.
Experiment, and found a little improvement in the 4th step is OK:
is also looking for the size of the larger XHR type (apparently Ajax request), the URL is found after the end of a fragment, such as
HTTPS://R19---sn-oguesne6.googlevideo.com/videoplayback?signature=xxxxxx......html5&range= 1541202-2106828&rn=13&rbuf=93753
Remove the last range, which is the final video or audio URL.
If the real wearies, you can also use the online downloader (http://en.savefrom.net/), the URL to paste in, will appear to download link.
YouTube Video Download