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MF_PD_ASF_CONTENTENCRYPTION_TYPE attribute

Specifies the type of protection mechanism used in an Advanced Systems Format (ASF) file.

Data type

Wide-character string

Remarks

This attribute applies to presentation descriptors for ASF content.

The IMFASFContentInfo::GeneratePresentationDescriptor method retrieves the Protection Type field, converts it into a wide-character string, and then populates a null-terminated array of WCHARs. If present, the value must be "DRM". The size of the array equals the Protection Type Field Length field of the Content Encryption Header.

Requirements

Minimum supported client

Windows Vista [desktop apps only]

Minimum supported server

Windows Server 2008 [desktop apps only]

Header

Wmcontainer.h

See also

IMFAttributes::GetString
IMFAttributes::SetString
IMFPresentationDescriptor
Presentation Descriptor Attributes
ASF Header Object
Presentation Descriptors

 

 

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