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Specifies the maximum number of frames that the video capture source will buffer.
Data type
UINT32
Get/set
To get this attribute, call IMFAttributes::GetUINT32.
To set this attribute, call IMFAttributes::SetUINT32.
Remarks
By default, the video capture source buffers a maximum of one frame at a time. You can increase the buffer limit by setting this attribute.
The correct way to set this attribute depends on the function used to create the media source:
- MFCreateDeviceSource: Set the attribute through the pAttributes parameter of the function.
- MFCreateDeviceSourceActivate: Set the attribute through the pAttributes parameter of the function.
- MFEnumDeviceSources: Set the attribute on the IMFActivate pointer returned by the function. Set the attribute before calling IMFActivate::ActivateObject.
The attribute applies only to video capture devices.
The GUID constant for this attribute is exported from mfuuid.lib.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 7 [desktop apps only] |
| Minimum supported server |
Windows Server 2008 R2 [desktop apps only] |
| Header |
|
See also