Что такое формат файла CDG?
.cdg files are associated with karaoke software such as DART Karaoke Studio, VLC media player, and KaraFun Player. They are the graphics sidecar track of the CD+G (CD+Graphics) standard - a Philips/Sony extension of the audio CD specification.
.cdg files are binary files used for storing song lyrics and synchronized graphics for karaoke players (they are so-called lyrics files, or "MP3+G graphics files"). They consist of a raw stream of 24-byte CD subcode packets, timed to audio at 300 packets per second, rendering a 300×216 pixel, 16-color display.
Karaoke software like DART Karaoke Studio offers users advanced tools for creating custom karaoke music libraries. It allows users to add lyrics and synchronize them with the audio track. The resulting lyrics tracks along with timings are saved as .cdg files.
Files with the .cdg extension store only lyrics and graphics, along with the information needed for text-audio synchronization. .cdg files do not store actual audio tracks or other audio data - they always act as a sidecar paired with an identically named audio file, most commonly an MP3. Both files together form an "MP3+G" track, and are often distributed bundled in a ZIP archive.
Безопасность и защита
РИСК: LOWCDG files are passive graphics data with no executable content, so they are low risk. The main caution is around fake "CDG player" or "CDG converter" download sites that bundle adware/PUPs - stick to VLC (open source) and well-known karaoke apps. Also note that a lone .cdg with no audio is not corrupt; it simply needs its matching song file.
Детали формата
в двух словах- DART Karaoke Studio lyrics file - DART's karaoke authoring tool reads/writes these same CD+G graphics; it is the same format, not a separate one (the DB just named it after that app).
Программы, открывающие файлы CDG
Windows4 apps
VLC media player
Открытый код Open the matching audio file (same name) - VLC overlays the .cdg lyrics automatically. 
Karafun Player
Freemium Add the song.mp3 (with song.cdg beside it) to the queue; lyrics display in sync.
PowerKaraoke / CD+G Player
Платно Open the MP3+G pair; designed specifically for CD+G playback and hosting. 
macOS1 app
VLC media player
Открытый код Open the matching audio file (same name) - VLC overlays the .cdg lyrics automatically. 
Linux1 app
VLC media player
Открытый код Open the matching audio file (same name) - VLC overlays the .cdg lyrics automatically. 
Android1 app
VLC for Android
Открытый код Keep song.mp3 and song.cdg together and open the audio - lyrics overlay if supported. Технические подробности
глубокая спецификация| Format type | Raw CD subcode graphics stream (binary) |
| Packet structure | 24-byte subcode packets encoding the P-W subchannel data |
| Packet rate | 300 packets per second, synchronized to CD audio timing |
| Graphics resolution | 300×216 pixels visible area (288×192 inside a 6-pixel border) |
| Color depth | 4-bit palette - 16 simultaneous colors per screen |
| Encoding | Binary - no text or character encoding |
| Compression | None - raw uncompressed packet stream |
| Pairing requirement | Sidecar file - must be paired with an identically named audio file to play |
| Common pairing | .mp3 + .cdg (MP3+G) - the most widespread karaoke distribution format |
| Typical file size | 150 KB - 400 KB per song |
| MIME type | application/octet-stream |
| File identification | No magic bytes - identified by regular 24-byte packet structure and pairing with audio file |
| Distribution packaging | Often bundled with a matching audio file inside a ZIP archive |
| Platform support | Windows, macOS, Linux, Android |
| Выпущен | 1980s (CD+G - the 'Graphics' subchannel of the Red Book CD standard) |
| Последняя версия | CD+G subcode spec (stable since the 1980s) |
| Открыть стандартное | Да · без роялти |
| Спецификация | jbum.com |
Конвертации CDG
Вопросы и ответы сообщества
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