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.
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.
Video to Audio Converter Factory Pro; it is the professional software for extracting audio files from videos. It also supports audio files converting.
MP3 M4A WMA MKA AU AIFF FLAC APE OGG Apple Lossless
AVI MP4 MKV Video 3GP FLV MP3 Aspect Ratio 1920*1080 H264 MPEG-4 AVC AVCHD DTS TS FFDShow AAC HD Video Resolution QuickTime Video Encoder Audio BitRate Video BitRate Audio Channels Frame Rate Sample Rate Video Profile iPad iPod PSP iPhone Android Symbian DVD NTSC HD Video Flash FLV SWF YouTube WMV TS Video Editor Video Converter
