Cisco WVC210 Reference Manual page 11

User-Level CGI Commands
Video and Image Commands
Cisco Small Business Network Camera Exported CGI Commands
Motion JPEG for OCX
To support the audio stream feature, there is an extra header at beginning of the
data stream (mjpeg/audio) to describe the frame information and sending status.
The extra header contains 48 bytes; the fields are shown in the following table:
Location
0-3
4-7
8-9
10-11
12-15
16-17
18-21
22
23-24
25
26-45
46-47
Parameter Value and String
Magic String The string to identify the header. Must
be "MJPG."
Frame Size The frame size in bytes.
Width The JPEG width.
Height The JPEG height.
Sent Size The size of the sent frame in bytes.
Slice Size The size of the slice in bytes.
Timestamp The time stamp of the frame. The time
stamp of the first frame is always 0.
Frame Type The frame type.
0x01 (01): JPEG
0x02 (02): G.726 Audio
Bit Rate The audio bit rate.
0x02 (02): G.726, 2 KBPS
Version The version number. 0x01
Time String The ASCII string to present the current
camera time. (Not used)
Reserved Reserved
2
6