WM/ASFSecurityObjectsSize
[The feature associated with this page, Windows Media Format 11 SDK, is a legacy feature. It has been superseded by Source Reader and Sink Writer. Source Reader and Sink Writer have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Source Reader and Sink Writer instead of Windows Media Format 11 SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The WM/ASFSecurityObjectsSize attribute contains the size, in bytes, of the DRM-related objects in the header of the ASF file.
Global Constant
g_wszWMASFSecurityObjectsSize
Data Type
WMT_TYPE_QWORD
Remarks
This attribute is read-only, and applies to the entire file (stream 0).
You can only retrieve this attribute by using the methods of the IWMHeaderInfo3 interface from the metadata editor object.
See also