Also known as compressor, this is a module or algorithm to compress data. Playing that data back requires a decompressor, or decoder.

A module that combines audio and video into one file.

LEAD AAC Encoder

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The LEAD AAC Encoder is a DirectShow® filter for compressing audio data using the AAC compression standard (ISO/IEC 13818-7). The AAC standard delivers high quality audio at lower bitrate compared to other audio encoding standards like ISO/MPEG Audio Layer-3; MP3.

This encoder offers both variable bitrate and constant bitrate. However, due to a limitation in the AVI multiplexer , the encoder offers constant bit rate only if it is connected to the AVI multiplexer.

Technical details for the filter are provided in the following table:

Filter Interfaces	ILMAACEncoder, ILMMCommon
Interface ID	IID_ILMAACEncoder
Input Media Types	Type: MEDIATYPE_Audio Subtypes: MEDIASUBTYPE_PCM
Output Media Types	Type: MEDIATYPE_Audio Subtype: MEDIASUBTYPE_LAAC (LEAD proprietary). MEDIASUBTYPE_mp4a MEDIASUBTYPE_AAC (format tag = 0xFF)
Filter CLSID	CLSID_LMAACEncoder
Property Page CLSID	CLSID_LMAACEncoderPropertyPage
Executable	LEncAAC.dll, DSKernel2.dll
Filter category	CLSID_AudioCompressorCategory
Header	ILEncAAC.h

Note: Media types are defined in the LGUIDs.h header file.

Platforms

Win32, x64