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|
|Input Media Types||Type:|
|Output Media Types||Type:|
|MEDIASUBTYPE_LAAC (LEAD proprietary)|
|MEDIASUBTYPE_AAC (format tag = 0xFF)|
|Property Page CLSID||CLSID_LMAACEncoderPropertyPage|
|Executable||LEncAAC.dll (Win32), LEncAACx.dll (x64), DSKernel2.dll|
NOTE: Media types are defined in the LGuids.h header file.
This filter is included as part of the following modules:
Medical Web Viewer .NET
.NET, Java, Android, and iOS/macOS Assemblies
C API/C++ Class Libraries