2.2.6.28 X-StartupProfile

The X-StartupProfile header specifies a list of streaming bit rates. For each bit rate, this header specifies the maximum amount of data that the audio and video decoders will need, and the time stamp of the ASF payload at which this maximum occurs. It is recommended that clients buffer at least the amount of data that this header indicates to prevent buffer underflow.

This header is defined only for use in responses sent to a client.<18> For more information about the X-StartupProfile header, including syntax, see [MS-WMSP] section 2.2.1.12.