AXIS P7304 Video Encoder (01680-001) – 4-Channel HD Analog to IP Converter with 1080p Support, Zipstream & PTZ Control
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 P7304 Video Encoder (01680-001) – 4-Channel HD Analog to IP Converter with 1080p Support, Zipstream & PTZ Control.
The AXIS P7304 Video Encoder is designed to modernise existing analogue surveillance systems by converting up to four analogue cameras into IP-based video streams. It supports a wide range of analogue formats including HD-TVI, HD-CVI, AHD, and CVBS, with maximum resolution up to 1080p at 30 fps per channel.
The encoder uses Axis Zipstream technology to reduce bandwidth and storage requirements while maintaining video quality. It also supports RS-485/RS-422 for PTZ control, two-way audio, edge storage via microSD card, and configurable I/O ports for alarms and automation. Built with secure boot and signed firmware, it ensures a secure and reliable upgrade path from legacy analogue systems to modern IP surveillance infrastructure.
Key Features:
4-channel analogue to IP video encoder
Supports HD analogue formats: HD-TVI / HD-CVI / AHD / CVBS
Up to 1080p resolution at 30 fps per channel
H.264 / H.265 / MJPEG compression
Axis Zipstream technology for bandwidth efficiency
PTZ control via RS-485 / RS-422
Two-way audio support
Edge storage via microSD card slot
Configurable I/O ports (alarms, sensors, relays)
Secure boot & signed firmware for cybersecurity
ONVIF-compatible integration
Supports analytics and motion detection
Ideal for analogue-to-IP migration projects
Rack/industrial-grade metal housing
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