It sounds like you are trying to get your TV's AV input to appear on your Roku player. That is not possible. The AV input will only be available using the TV remote and selecting the input there. Your Roku can only display channels available on the Roku itself.
The only Roku device with an AV input would be a Roku TV, and not all of those have that type of input either. AV (analog) inputs are becoming rare on TVs, as almost everything has moved to HDMI.
Dan
Roku Community Streaming Expert
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