CD+G
CD+G (also known as CD-G, CD+Graphics and TV-Graphics) is an extension of the compact disc standard that can present low-resolution graphics alongside the audio data on the disc when played on a compatible device. CD+G discs are often used for karaoke machines, which use this functionality to present on-screen lyrics for the song contained on the disc. The CD+G specifications were published by Philips and Sony as an extension of the Red Book (CD standard) specifications.
| Media type | Optical disc |
|---|---|
| Encoding | Various |
| Capacity | Typically up to 800 MB (up to 80 minutes audio) |
| Read mechanism | 780 nm wavelength semiconductor laser |
| Standard | Red Book for audio |
| Developed by | Philips & Sony |
| Usage | Audio with primitive visuals |
| Extended from | CD-DA |
| Extended to | CD+EG |
| Optical discs |
|---|
The first CD to be released with CD+G graphics was Eat or Be Eaten by Firesign Theatre in 1985. The CD+EG is a similar format that allows for better graphics, but has very rarely been implemented in releases.
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