Specifies the start time for a topology, relative to the start of the first topology in the sequence.
Treat as a LONGLONG value.
The value is given in units of 100 nanoseconds.
If the Media Session was created with the MF_SESSION_GLOBAL_TIME attribute equal to TRUE, all topologies must contain the MF_TOPOLOGY_PROJECTSTOP attribute. Otherwise, topologies must not contain the MF_TOPOLOGY_PROJECTSTOP attribute. For more information, see Sequence Presentation Times.
This attribute is a signed value, although it is stored as a UINT64.
The GUID constant for this attribute is exported from mfuuid.lib.
Minimum supported client
|Windows Vista [desktop apps only]|
Minimum supported server
|Windows Server 2008 [desktop apps only]|
- Sequence Presentation Times
- Topology Attributes