videos dowloading problem

videos dowloading problem

 

I could able to play the video but could not able to download it.IDM will catch the link but goes on download it.The link is >>

http://cloudcampus.icai.org/page.html?page_id=431

and looking page source is >>

rtmp://node1.weblivecasting.com:80/vod/_definst_/icai/IP1Ch5InternalReconstructionP1.mp4

I will be eagerly waiting for your kind reply.