not able to download rtmpe videos & purchased movies from youtube

[PayNow]

Hey guys,

1)
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i have purchased a movie on youtube idm gived me the download option so i have downloaded with idm when i try to play the downloaded file i am getting a black screen without audio & video is ther any ways to download the movie ?

screenshot of vlc

http://s17.postimage.org/q6bgx9ffh/Capture.png

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2)

i am not able to download rtmpe streams from youtube is thr any solution i have tryed with rtmpdumb not work..

exemple link : http://www.youtube.com/watch?v=dzxAeu1tRDU


Thanks;