This A/V RCA Cable for Raspberry Pi is a great way to turn your Pi 4, 3, 2, A+ or B+'s output into a full on composite video and audio device. For use with the Pi 4, see instructions below. Simply connect the cable to your Raspberry Pi's 3.5mm jack and the other side into whatever device you're looking to connect to and get full RCA visuals and sound.
We're big fans of RCA connectors. They're one of our favorite plugs that everyone has a fond memory of using. Yellow's for composite video while red and white are for stereo audio. The cable is around 5 feet long.
This cable has the right wiring so you can get composite video out - e.g. The TRRS corresponds to left, right, ground, video.
On the Raspberry Pi 4, composite output is disabled by default, due to the way the internal clocks are interrelated and allocated. Because composite video requires a very specific clock, setting that clock to the required speed on the Pi 4 means that other clocks connected to it are detrimentally affected, which slightly slows down the entire system. Since composite video is a less commonly used function, Raspberry Pi decided to disable it by default to prevent this system slowdown.
To enable composite output, use the
enable_tvout=1 option in config.txt. As described above, this will detrimentally affect performance to a small degree. Learn more at RaspberryPi.org
On older Pi models, the composite behavior remains the same.