trying to download streaming video off twitcam.livestream.com

[K0edx4ever]

I tried downloading from Twitcam, but i am unable to do so.

Downloading the video clip from this site:

http://twitcam.livestream.com/5uetk

The clip goes for 55 mins but it download around 6mins? then it doesn't download anymore.
It goes

ERROR: RTMP_ReadPacket, failed to read RTMP packet header

This is my command line to download it

rtmpdump.exe -r rtmp://extondemand.livestream.com/ondemand/trans/dv15/mogulus-user-files/chtwitcam_lexistgeorge/2011/07/22/522aa83c-2183-4b16-90b4-f8e188267569 -W http://cdn.livestream.com/chromelessPlayer/v21/playerapi.swf -o Video.flv

May i please get some help, or maybe a different code to help me download.

Please and Thanks.