Why not give this excellent screen/game recorder a go? i did and i am convinced that it is the best one i have used so far.
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https://www.youtube.com/watch?v=V-snhAakiaI
WARNING - CONTAINS BAD LANGUAGE FFK'S SAKE!!
Just some random raging and comedy moments thrown together for your enjoyment.
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https://www.youtube.com/watch?v=miZnOm7nSYE
This Campaign was recorded in HDMI with the Live Gamer Portable connected to the "VIEW HD powered splitter" for the Ultimate in recording quality and edited and rendered in Sony Vegas Pro 12.
LIVE COMMENTARY THROUGHOUT!!
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https://www.youtube.com/watch?v=uz6SgEk_riQ