Access denited problem

[Surya4u]

using youtube data api3 to access youtube data but now days my script not working well, when user goes to download page he is unble to download videos, says "Access denited". Anyone can solve problem? if solve I will pay him

check http://redmob.in/video/download/W7M5UDTrrr8

[Ajmalrasi]

The link you posted contains copyright protected material, Youtube uses a cipher algorithm to protect these videos.