Retro Gaming Cables have just opened pre-orders on their Dreamcast component video cable. These cables convert the RGB and VGA output to YPbPr, with a switch to select between 15KHz (240p/480i) and 31KHz (480p) modes. They should be compatible with all displays and scalers that can handle those signals. The price came to about $80 including shipping and exchange rate to the US and they’re due to ship in late March.
If you’d like to learn more about the Dreamcast and its complex video signals, check out the DC Digital video below. While that focus is on the HDMI mod, all video signal info will completely apply to this: