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

See also

Alphabetical List of Media Foundation Attributes

IMFAttributes::GetString

IMFAttributes::SetString

IMFPresentationDescriptor

Presentation Descriptor Attributes

ASF Header Object

Presentation Descriptors