Filename extension: .cdg
Developed by: KARAOKE-ROMAN Kakoke
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The CDG file format, also known as CD+G or CD Graphics, is an extension of the standard audio CD format that allows for the inclusion of graphics data in addition to the usual audio data. This format became popular in the late 1980s and is primarily used for karaoke machines, enabling the display of song lyrics and images alongside the music.

History of CDG Format

Introduced in the 1980s, the CDG format was developed as an enhancement of the Red Book CD-DA standard, which is the audio CD standard. It was designed to cater to the burgeoning karaoke industry, which required a means to present lyrics visually in sync with the music. The CDG format allowed for the storage of simple graphics and text, paving the way for an interactive singing experience.

How CDG Works

The CDG format stores low-resolution graphics data as 16-color or 256-color raster graphics. The graphics are encoded in subchannels of the audio CD, meaning they occupy a portion of the disc separate from the main audio tracks. During playback, a CDG-compatible player reads the graphics data, decodes it, and displays it in time with the music.

Software and Hardware Compatibility

Various karaoke machines and software media players support the CDG format. Some popular software applications include Karaoke Player, VLC media player (with the CDG plugin), and Winamp (with a SHOUTcast source). Hardware compatibility extends to specialized karaoke CD players and some DVD and Blu-ray players that support the CDG format.

Alternatives to CDG

With the advent of digital media, several alternative formats have emerged to replace CDG files. These include MP3+G, which pairs an MP3 audio file with a CDG file for graphics, and video file formats like MPEG and AVI, which are capable of incorporating both audio and graphical data in a single file. These newer formats are often more flexible and higher in quality, thus gaining popularity in the karaoke industry.

Supported converters for CDG files

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