AXIS M7104 4-Channel Video Encoder (01679-001) - HD Analog to IP Converter with Zipstream, PTZ Support & Edge Storage
Unless selecting a vari-focal camera (with an adjustable lens) It is important to select the correct camera lens option for where the camera is to be positioned. A smaller lens will give you a wider angle but will be "zoomed out more", while a bigger lens will narrow the angle down and "zoom in more". See below to give you some idea on angles of Megapixel HD Cameras:
| Lens in mm | Approx Viewing Angle (degrees) | Ideal Distance (metres) | Typical usage/notes |
|---|---|---|---|
| 2.8 | 106 | <6 | For seeing as much of the immediate area as possible such as above a doorway/low down/garage soffits (edges can appear slightly warped/distorted) - clearly "zoomed out" |
| 3.6/4 | 83-90 | <12 | A great general purpose option giving great coverage still in the corner of a room or higher up on second floor soffits with less distortion - more of a natural "zoom" |
| 6 | 56 | 6-20 | Narrows down the angle and zooms in to look past the immediate area a little to gain more detail - down a driveway for example from higher up |
| 12 | 24 | 20+ | Zooms in significantly more to look at a gate, entrance or adjascent building |
| 16 | 19 | 24+ | As above but more so |
The amount of hard drive space you require is dictated by how many cameras, as well as their resolution and frame rate settings. Finally you can often make your storage space last a lot longer by enabling motion detected recording rather than continuous, especially if there are long periods of no activity.
|
Resolution (Megapixels) |
Days of storage provided by 1TB per camera (continuous - full 25 frames per second) |
Days of storage provided by 1TB per 4 cameras (continuous - full 25 frames per second) |
Days of storage provided by 1TB per 4 cameras (50% motion- 15 frames per second) |
|---|---|---|---|
| 1 | 44 | 11 | 36 |
| 2 | 22 | 5 | 18 |
| 3 | 17 | 4 | 14 |
| 4 | 11 | 3 | 9 |
| 5 | 9 | 2 | 8 |
| 6 | 8 | 2 | 6 |
| 8 (4K) | 5 | 1 | 4 |
| 12 | 4 | 0.5 | 3 |
As a rule of thumb we recommend a minimum of 2 Terabytes per 4 x 2-4MP HD cameras, as this should give you 2 weeks to a month with a few adjustments on motion detected recording. You may only require the full 25 frames per second on certain cameras if things are fast moving.
(All of our hard drives come fitted and are CCTV specific from one of the major brands)
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AXIS M7104 4-Channel Video Encoder (01679-001) – HD Analogue to IP Converter with Zipstream, PTZ Support & Edge Storage.
The AXIS M7104 Video Encoder is designed to migrate small analogue surveillance systems into modern IP-based video networks. It supports 4 analogue channels, converting CVBS signals into digital streams for use with VMS platforms. The encoder delivers video at up to D1 resolution (720×576 PAL / 720×480 NTSC) with smooth performance at 30 frames per second per channel.
It includes Axis Zipstream technology to reduce bandwidth and storage usage, along with RS-485/RS-422 PTZ control, edge storage via microSD card, and ONVIF compatibility. Built with secure boot and signed firmware, it ensures protected and reliable video transmission for professional surveillance environments.
Key Features:
4-channel analogue to IP video encoder
Converts legacy CCTV (CVBS) to IP system
Supports up to D1 resolution (720×576 / 720×480)
30 fps per channel streaming
Axis Zipstream compression (H.264/H.265 support depending on profile)
PTZ control via RS-485 / RS-422
Edge storage via microSD card slot
ONVIF S/G/T compatibility
Secure boot & signed firmware security
Configurable I/O ports for alarms and sensors
Compact rack/desktop installation
Ideal for small analogue system upgrades
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