Specifies the maximum number of Long Term Reference (LTR) frames controlled by application.
The value of this control includes two fields, where each field has 16 bits.
||The number of LTR frames controlled by the application.
Assuming the value is N and N is non-zero value, at each IDR frame the encoder must automatically mark the frames following the IDR frame (and including the IDR frame) as LTR frames as long as all 3 of the following apply:
||The trust mode of LTR control.
1 (Trust Until) means the encoder may use an LTR frame unless the app explicitly invalidates it through the CODECAPI_AVEncVideoUseLTRFrame control.
Other values are invalid and reserved for future use.
This is a static API.
Default value shall be 0
|Minimum supported client
||Windows 8.1 [desktop apps | UWP apps]
|Minimum supported server
||Windows Server 2012 R2 [desktop apps | UWP apps]