Component video uses 3 wires (colored Red Green and Blue). Although they are colored RGB they do not transmit RGB information.
Component transmits the YUV color space, using the YCbCr variant, which is just a scaled and offset YUV color space.
Once the YCbCr information is converted to an analog voltage and transmit over component cable, it is referred to as YPbPr.
Many component cables come with audio (Red and White) and sometimes an additional composite (yellow) wire, but the component video part is just the three RGB wires.
Common/official resolutions for component video are:
- Retro Consoles (240p) 60Hz 320 × 240 (Receiver must support 15kHz signal)
- SDTV (480i) 60Hz 720 × 480
- SDTV (576i) 50Hz 720 × 576
- SDTV (480p) 60Hz 720 × 480
- SDTV (576p) 50Hz 720 × 576
- HDTV (720p) 50/60Hz 1280 × 720
- HDTV (1080i) 50/60Hz 1920 × 1080
- HDTV (1080p) 50/60Hz 1920 × 1080