Using a proxy on rtmpdump to overcome geo restrictions

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I know rtmpsuck is a transparent proxy, but what I am looking for is something different. I remember on the old get_iplayer there was a command for --proxy in which you could make the command seem as though it was coming from wherever the proxy is from.

My current problem is that I can use rtmpsrv to get the stream information but because of my location I cannot access the file (it is the same way in that when I go to the page I can access the video until I press play, which is when Adobe Flash realizes I'm not from that location). Is there a command like --proxy that can be used for rtmpdump as well?