Specifies the buffer window, in milliseconds, of a constrained variable-bit-rate (VBR) stream at its average bit rate (specified by MFPKEY_RAVG).
Constant for IPropertyBag
No default value, but the codec will compute an appropriate value based on the other constrained VBR settings.
This value is computed by the codec after the final encoding pass. You should not query for this value until after encoding is complete. The codec interprets a request for this value as a signal that the encoding session is over; the next sample that you process is treated as the beginning of a new session.
|Minimum supported client
||Windows XP [desktop apps only]
|Minimum supported server
||Windows Server 2003 [desktop apps only]