Find FAQ: What adapter to record tv sound and video ?

The playstation is connected in the back with hdmi and i can see and hear everything.

Now my pc is a very big i can't take it to the living room but i want somehow to record to something my ps3 gameplay so i can move it later to the pc.

Is there any external hard disk or something that i put hard disk inside and it will be connected to the back of the tv and record the video ?

I am using TOSHIBA REGZA TV set.

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What adapter to record tv sound and video ?