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What is AC-3

AC3

What is AC3

AC-3 is short for Audio Codec 3, Advanced Codec 3 or Acoustic Coder 3. It is also known as the Dolby Digital which is the name for data and audio compression technologies developed by Dolby Laboratories. It was originally called Dolby Stereo Digital until 1994.

Applications of MP4

Dolby Digital SR-D cinema soundtracks are optically recorded on a 35 mm release print using sequential data blocks placed between every perforation hole on the sound track side of the film. A CCD scanner in the projector picks up a scanned video image of this area, and a processor correlates the image area and extracts the digital data as an AC-3 bitstream. This data is finally decoded into a 5.1 channel audio source.

Dolby Digital audio is used on DVD-Video and other purely digital media, like home cinema. In this format, the AC-3 bitstream is interleaved with the video and control bitstreams. Learn more.

Related Software

Video to Audio Converter Factory Pro; it is the professional software for extracting audio files from videos. It also supports audio files converting.

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MP3 M4A WMA MKA AU AIFF FLAC APE OGG Apple Lossless

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