JVC VN-V686UAPI manual Search VN-V686 in LAN, Vol Vop

VOL

I-VOP

P-VOP

There are VOL, Userdata1, GOV and Userdata2 before each I-VOP.

Data Structure before I-VOP

Item		Note
VOL		VOL of MPEG-4 Video
Userdata1		Reserved
GOV		GOV of MPEG-4 Video
Userdata2		Userdata
Data Structure of Userdata2
Item	Example	Note
Start Code	0x000001B2	Start code of userdata in MPEG-4 Video
Product Name	type = VN-V686U	Product Name
Timestamp	Timestamp =	Year, Month, Day, Hour, Minute, Second,
	20070319161455123UTC	Millisedond, and Time zone
Camera ID	camera = Camera01	Camera ID that user can define
Preset Position	position = 0	Indicates preset position number after moving to
Number		preset position. In other cases, position = NA.
Fan status	fan = 0	Indicates status of fan. 1 means error.
Intelligent tracking	track_status = 0	Indicates status of Intelligent tracking. 0 means
status		completed, 1 means waiting for specifying target, 2 means
		tracking, and 3 means losing.

3. API to Search VN-V686

VN-V686 in LAN can be searched by broadcast packet that includes this API.

Search VN-V686 in LAN

Protocol Send udp packet with following text in UDP payload to destination port number 80. Source port number can be any value.

system.id<CRLF>

Response VN-V686 that received this packet sends udp packet to the source port number of the search packet. UDP payload of response packet has model name, IP address, and subnet mask. VN-V686 waits 0-0.7 second before sending response to avoid too many responses are sent in short period from many VN-V686s.

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