Speaking of wires connecting with your video devices, the most common are the RCA cables, which have red- and white-labeled audio plugs and yellow-labeled video plus. They usually work with component video that has the red-yellow-green connectors and digital audio cable, so there is a question that if you can use a spare audio cable with video. This can be a useful alternative to save your time to the store however with some compromises involved.
Standard audio/video cables were produced with RCA connections since from the Depression, and the RCA company and its RCA Victor subsidiary were a majority in the phonograph and radio business. RCA connectors were used to link record players with the radio, and the connector was created with a center pin and an outer, cylindrical shield. Although they are widely used, there were still some technology limitations.
Many factors are able to affect the RCA cables to transmit signals. The diameter of the central wire is larger, the signal will be less damaged when passes through. High-end cables have 0.65mm or lager in central wire, but low-end cables just have the half that. With oxygen-free copper, they can reduce signal loss and distortion. Good cables should be shielded with foil and a heavy copper braid, and also use heavy-duty connectors with gold plating for good connectivity.
Using Audio Cables
If you are connecting an elderly VCR or DVD with a low-end TV, the signal quality can be bad, and it does not matter to replace with an audio cable. Or you are connecting higher-quality components by a good-quality audio cable using a heave, OFC core and lots of shielding. Remember, the RCA A/V inputs of your TV can only with 480p resolution. Connect three high-end audio cables to the red, green and blue component video inputs, which will be the only way to have high-definition video to work with RCA cable.
Making the Connections
To identify your spare RCA audio cable, use colored electrical tape or a twist-tie in the tangle behind your system. Plug one end into the yellow Video Out on your DVD, while the other into the yellow Video In on your TV. Use the same procedure for the rest connection with red/green/blue component video inputs. And this only for video transition and you need another cable to transfer audio.