MP3 File Source
The MP3 file source parses MP3 files.
The MP3 file source outputs buffers that contain MPEG-1 audio frames. It does not decode the audio.
File Extensions and MIME Types
The MP3 file source is the default media source for the following file name extension:
- .mp3
It is also the default media source for the following MIME types.
- audio/mpeg
- audio/x-mp3
- audio/x-mpeg
Media Types
The media type offered by the MP3 file source contains the following attributes.
| Attribute | Description |
|---|---|
| MF_MT_MAJOR_TYPE | Equal to MFMediaType_Audio. |
| MF_MT_SUBTYPE | Equal to MFAudioFormat_MP3 or MFAudioFormat_MPEG. |
| MF_MT_AUDIO_AVG_BYTES_PER_SECOND | Average number of bytes per second. |
| MF_MT_AUDIO_BLOCK_ALIGNMENT | Equal to 1. |
| MF_MT_AUDIO_NUM_CHANNELS | Number of audio channels. |
| MF_MT_AUDIO_SAMPLES_PER_SECOND | Number of audio samples per second. |
| MF_MT_USER_DATA | Contains the portion of a MPEGLAYER3WAVEFORMAT structure that appears after the wfx member of the structure. |
Interfaces
The MP3 file source exposes the following interfaces through QueryInterface:
In addition, it exposes the following interfaces through IMFGetService:
| Service GUID | Interface |
|---|---|
| MF_METADATA_PROVIDER_SERVICE | IMFMetadataProvider |
| MF_PROPERTY_HANDLER_SERVICE | IPropertyStore Note: See Shell Metadata Providers. |
| MF_RATE_CONTROL_SERVICE | IMFRateControl |
| MF_RATE_CONTROL_SERVICE | IMFRateSupport |
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 7 [desktop apps only] |
| Minimum supported server |
Windows Server 2008 R2 [desktop apps only] |
| DLL |
|
See also