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ONVIF

33-6 Camera Handler Release Notes

1 Onvif cameras cannot be discovered using Auto Discovery. These cameras should be

added manually.

2 When Hikvision cameras are added via NVR Auto Discovery, the device list will not show

camera information. These cameras should be added manually using the “Configuring a

Camera for ONVIF Communication” steps which are highlighted above. Adding the device

manually will show this camera information.

3 When the user adds a camera to the NVR the latter will first attempt to use a native

handler to establish communications. Failing this it will revert to the ONVIF handler (if this

also fails the user will be unable to add the camera)

a If the user has incorrectly typed in the password or assigned an incorrect password

group the native handler communications will fail even if there is a suitable native

handler available. In this case it's possible that the ONVIF handler will be employed

(assuming ONVIF authentication is disabled). If there is a native handler available

then this is probably not what the user wanted ie the native handlers are normally

more feature rich.

4 Each NVR native camera handler maintains the camera's user account name (username)

eg for brand XYZ the username could be “root123” - the user then only has to specify a

password via the NVR web GUI. Given the range of different manufacturers providing

ONVIF cameras it's not possible to identify a common username. Therefore the NVR

ONVIF handler requires the user to create a common user account on each ONVIF

camera. The common username and password for the NVR handler is defined within the

handler as admin/ADMIN respectively.



The user should create (or update) a user account directly on the camera with username =

admin and the password can be anything they choose. They should then create a new

password group via the NVR GUI and use this group when adding the camera to the

NVR.The admin user account should optimally be configured with full admin rights in order

to access the full range of ONVIF functionality (where supported).

5 Some cameras support a maximum of 2x ONVIF VideoEncoderConfiguration profiles

(VEC) e.g. HikVision's Speeddome and bullet cameras. In general each VEC can be

modified, assigned or removed from an ONVIF media profile: however, ONVIF does not

support the creation of VEC entities, which means (for these cameras) there can only be

at most 2 distinct media streams served out by the camera.



For example, if the camera supported 6x concurrent streams then up to 6 clients could

receive video but there would be at most 2 distinct media codecs/resolutions/frame rates

etc.

6 Frame Rates - The HikVision camera models investigated here have a limitation with

regard to their advertised frame rates. The frame rates available through the camera web

page range from 1/16, 1/8, ¼, ½, 1, 2, 4, 6, 8, 10, 12, 15, 16, 18, 20, 22, 25 FPS. The

frame rate available through the ONVIF protocol comes in the range min - max eg 1 - 25

HikVision Dry Contacts and Presets - zero or one based

issue.

Some ONVIF camera manufacturers have

different offsets for dry contacts, presets etc.

Some use zero-based indexing, while others

are one-based. The NVR allows the user to

fine tune the appropriate numbering offset on a

per camera basis.

CBC Unable to add CBC cameras via the ONVIF

handler to the NVR.

Initial investigation appears to point to a timing

issue, taking too long to respond (>5 secs) to

onvif queries and timing out.

Recommendation - Use the generic CBC

native handler

Camera Feature Pre-Configure Camera Settings

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