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4.1 H.261 Payload Header, Intraframe

Consider the following payload header in big-endian byte order.

 0x9B, 0x00, 0x00, 0x00

This corresponds to payload header fields with the following values.

 Field

 Value

SBIT

4

EBIT

6

I

1 (intraframe)

V

1

GOBN

0

MBAP

0

QUANT

0

HMVD

0

VMVD

0

The following code snippet expands the payload header to include the RTP packet that contains the payload:

 0x40, 0x41, 0x22, 0x22, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x01, 0x9B, 0x00, 0x00, 0x00

In this case, the definition of the RTP header [MS-RTPME] is the following:

Field

Value

P

0

X

0

CC

0

M

0

PT

65

Sequence Number

8738

timestamp

65535

SSRC

1