I have an Insignia tv and a Toshiba DVR. Recently we switched from satellite to cable. I am having great difficulty in hooking up my DVR to tv and cable box. When the tech was here to install the cable, I told him what I would like for him to do, but he said I would need an adapter. I asked which adapter and he responded, "when I get the adapter he would come and install it". On the back of the cable box, I have the following: co-axle input, red and white ports (no yellow port) labeled analog, a digital (but it's covered over--like you can't use it), a cord already in use for video/audio (hooked to tv), a network and a USB. I have been researching the internet so much, and the only things that I can come up with is an RF Modulator, an HDMI Modulator, and HDMI spiltter. I don't even know if what I had mentioned, are they what I need? I really would love to be able to get my player/recorder hooked up. When it was hooked up to the satellite, it has been a life saver with all this pandemic stuff. Any help that you can tell me would be greatly appreciated. (If pic is needed on cable box, please advise)