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LEAD AAC Encoder

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:

Component Description
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/LEncAACKrn.DLL (Win32), LEncAACx.dll/LEncAACKrnx.DLL (x64), DSKernel2.dll
Filter Category CLSID_AudioCompressorCategory
Header ILEncAAC.h

Comments

NOTE: Media types are defined in the LGuids.h header file.

This filter is included as part of the following modules:

Platforms

Win32, x64.

See Also

LEAD AAC Encoder User Interface

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© 1991-2022 LEAD Technologies, Inc. All Rights Reserved.