![]() The MP3 encoder does not support the following formats defined by the standard. The MP3 encoder also supports the following formats. ![]() The MP3 encoder supports the standard with some exceptions, as well as some additional formats, as described below. The MPEG-1 and MPEG-2 standard defines 252 layer 3 audio formats. It does not support 32-bit floating point input. The encoder supports only 16-bit integer PCM input. Set the following attributes on the input media type. This attribute contains the 12 bytes of the MPEGLAYER3WAVEFORMAT structure that follow the wfx member of that structure.Īlternatively, you can fill in an MPEGLAYER3WAVEFORMAT structure and call MFInitMediaTypeFromWaveFormatEx to convert the structure to a Media Foundation media type. Use this attribute to specify the encoded bit rate. The default bit rates are 128 Kbps for mono and 320 Kbps for stereo. Attributeīit rate of the encoded MP3 stream, in bytes per second. Set the following attributes on the output media type. The output type must be set before the input type. ![]() The MP3 encoder supports the following media types. Click Add Files on the new Video Converter window, find the H.264 videos you want to play from your computer, click Open. The class identifier (CLSID) of the MP3 encoder is CLSID_MP3ACMCodecWrapper, defined in the header file wmcodecdsp.h. Start Free HD Video Converter Factory, select Converter on the main menu. The Microsoft Media Foundation MP3 audio encoder is a Media Foundation Transform (MFT) that encodes MPEG-1 layer 3 (MP3) audio.
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