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Question: Harmon Kardon 247 set up

1st avr receiver when setting up video do you have to have a cable (hdmi s-video ect.) coming in to rec. from source and then one coming out of avr to t.v. ect. to use features found in the video portion of avr?Any other tips would be very helpful.I am very happy with audio which was main reason for purchase but need to take advantage of video to THANKS TO ALL