LEADTOOLS includes an AC3 encoder for DirectShow and Media Foundation. This encoder compresses audio data using the A/52 - Digital Audio Compression Standard (AC-3).

AC3 is used primarily within DVD, digital television (DTV), digital cable television, and satellite television transmissions. The AC3 format fully supports 5.1 surround sound with down-mixing options for compatibility with non-surround audio devices.

Overview of LEADTOOLS AC3 Audio Codec Technology

  • Full AC3 audio data encoding support that adheres to the A/52 - Digital Audio Compression Standard (AC-3) standard
  • Create Dolby Digital 5.1 (6-channel) surround sound
  • Create DVDs with Dolby Surround
  • Convert stereo input to 5.1 surround sound output
  • Down-mix 5.1 audio into stereo or mono for devices without surround sound support
  • Source code available under terms of GNU Lesser General Public License ("LGPL")
  • Codec interfaces for .NET (C# & VB) and C DLL API for 32 and 64-bit development

Technology Related to AC3 Audio Codec

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Documentation Links for AC3 Audio Codec

LEADTOOLS SDK Products that Include AC3 Audio Codec

LEADTOOLS Multimedia Suite v20

The LEADTOOLS Multimedia Suite SDK is a comprehensive collection of multimedia development technology that provides developers with everything they need to create enterprise-level multimedia applications for a wide variety of industries, including defense, broadcast, security, and more. By bundling features from the Multimedia SDK, DVD Module, Streaming Module, MPEG-2 Transport Module, Imaging Pro SDK, and Distributed Computing SDK, Multimedia Suite offers a tremendous value for the world-class technology it provides.

LEADTOOLS Medical Multimedia Module v20

The LEADTOOLS Medical Multimedia Module includes the LEADTOOLS Multimedia SDK and a collection of state-of-the-art DirectShow filters and Media Foundation Transforms to compress and decompress video and audio data within DICOM files. This feature-rich product is designed to eliminate the complexity from converting multi-frame (cine) images and video streams to DICOM objects, including X-ray Angiography (XA), Ultrasound (US), Visible Light (VL), and Secondary Capture (SC). The LEADTOOLS Medical Multimedia Module utilizes the most advanced compression algorithms in the industry and approved by the DICOM standard, including MPEG-2, HD MPEG-2, Motion JPEG, Motion JPEG 2000, and H.264.


The LEADTOOLS DVD Module extends the LEADTOOLS Multimedia toolkit by adding functionality to programmatically create, capture, author, burn, and play DVD images and discs. The module includes everything developers need to work with DVD multimedia, including a DVD writer to create images, DVD burner, menu navigator, MPEG-2 and MPEG-1 multiplexers, MPEG Audio encoder, MPEG-2 video codec (Encoder/Decoder), several DirectShow Filters and Media Foundation Transforms to resize and crop videos, and DVD metadata extraction.

NOTE: LEADTOOLS Audio Codecs are very diverse and cover the gamut of multimedia features and technologies. Many codecs are included with the base SDK products above, while some can be added á, la carte or bundled together with various add-on modules. See the Multimedia Product Comparison Chart for more details on how to obtain each audio codec.