I added this video : http://www.youtube.com/user/yanivfisher#p/a/u/0/DBElBMJ3xbU

as URL, but it don't begins.
I also try to add it as youtube video, but with the same issue.

If I go in the browder to this link, it work fine.

Hi zonhal,

Really nice question. I am very interested to answer for this question.

You have given the link "http://www.youtube.com/user/yanivfisher#p/a/u/0/DBElBMJ3xbU".
Open it. Note down this is not a video link. But, channel link.
Example to video link is "http://www.youtube.com/watch?v=OyUze2ePGCg".

Now, your need is to find out the video link of any videos in any youtube channel.

Solution:

See the menu bar "Info Comments Favorite Share Playlists Flag " below the youtube player when you are playing videos from any youtube channel.
Ex: "http://www.youtube.com/user/yanivfisher#p/a/u/0/DBElBMJ3xbU"
Click on Share below player.
See the new link starts with the sentence "Paste this link into an email or instant message: " and holds the video url "http://www.youtube.com/watch?v=DBElBMJ3xbU" in text box.
Now copy and add this video url to HDFlvPlayer.