Is there anyway to input video to my computer without buying a tv tuner or special video card
Video input
no
Without a capture card, there is no way to record video onto your PC. You can import video from DVDs, cameras, etc. without a capture card. Capture cards these days support High-Definition Digital TV capture and can be as cheap as $100 AUD. They do, however, require a reasonable amount of CPU power, RAM and hard disk space.
Maybe your card has VIVO? (video in , video out) then you could stream signal for example by using external video recorder (with TV tuner 
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