Mp3HD

MPEG-1 Audio Layer III HD
Filename extension
.mp3
Developed byTechnicolor
Initial release2009
Type of formatAudio compression format, audio file format
Extended fromMP3, MPEG-1 Audio Layer III
Websitehttp://www.all4mp3.com/

MPEG-1 Audio Layer III HD (more commonly known by its abbreviation mp3HD) was an audio compression codec developed by Technicolor, formerly known as Thomson.

It featured lossless compression of audio data, and was usually backwards compatible with the MP3 format by storing two data streams in one file.