0x00
0x00
0x01
0xB2
User data message
For MJPEG, these (for the rest identical) messages are inserted as comment field (FF FE):
0xFF
0xFE
Size
(MSB)
Size (LSB)
User data message
For H.264, these (for the rest identical) messages are inserted as SEI NAL-unit (0x06),
marked as type User Data Unregistered (0x05):
0x06
0x05
Size
UUID (16 bytes)
User data message
Product info message
The Product info message (always inserted) is used to identify the source of a specific video
stream. The data ID is 0x00, with the message in the following layout.
'O'
'P'
'T'
'C'
0x00
Prod. name
(ASCII)
0x80
Serial
nr
(ASCII)
0x80
SW version
(ASCII)
0x80
Status info message
This message contains all relevant status messages, related to the video stream or codec. The
data ID is 0x01, with the message in the following layout.
'O'
'P'
'T'
'C'
0x01
Status1
Status2
Status3
Status4
(future
expansion
possible)
Status 1
Video status
Bit 0 (lsb)
Video loss on input
Bit 1
Black/white video
Bit 2
VMD alarm
Bit 3
Tampering alarm
Bit 4
Image quality alarm
Bit 5
(for future use, will be ‘0’)
Bit 6
(for future use, will be ‘0’)
Bit 7 (msb)
Fixed ‘0’
Video
57
