"Distributed" describes where the intelligence sits, not how the boxes look. In a distributed AV system every source and every display has its own endpoint, routing happens on the network, and the management layer is a service rather than a chassis. That changes what a manufacturer has to own — and it changes what happens in year four of the installation.
In a centralised matrix, video is switched in one place and every cable converges on that place. In a distributed system the switching function is spread across the network and the endpoints, so the cabinet disappears and the topology becomes an IT document rather than an AV one.
Encoders at each source convert HDMI to streams. One encoder serves every screen that needs the source, including screens in other buildings.
Managed Ethernet with IGMP snooping, a media VLAN and QoS. Fibre uplinks between floors or buildings carry AV alongside data.
Decoders at each display or panel group apply windowing, crop and rotation locally, which is what makes video walls and multi-view possible without a separate processor.
Management holds routing tables, presets, schedules, firmware versions and health status. This is the layer that decides whether the system is maintainable.
Distributed AV projects usually assemble four or five separate products: an encoder line, a decoder line, a recording server, a transcoder for streaming, and a control processor. Our QG-1169 platform folds those into one system so a site does not end up with five vendors and five support contracts.
Up to hundreds of sources, H.264 or H.265, with per-source bitrate profiles so a document camera and a signage player do not have to share the same settings.
Single display, multi-window, panel groups and full video walls. Decoders render locally, so adding a screen does not add load to a central processor.
Recording of selected streams inside the platform — hearings, lectures, procedures — with retention policy per channel instead of a separate NVR appliance.
Restream to a conferencing platform, an LMS or a CDN at a lower bitrate while the local wall keeps the full-quality stream. One source, several outputs, no extra hardware.
Routing, presets, schedules and device health, driven from a browser, a touch panel or a third-party control system through documented APIs.
Staged rollout with per-unit version reporting and exportable configuration. A distributed estate with no firmware discipline becomes unmaintainable by year three.
| Criterion | Centralised matrix | Distributed AV system |
|---|---|---|
| Initial cost, small site | Usually lower. One chassis covers eight inputs and eight outputs with fixed cabling. | Higher per room below roughly six endpoints, because each endpoint carries its own cost and each needs a switch port. |
| Cost at scale | Rises sharply — bigger frame, more cards, longer dedicated cable runs, more labour. | Falls per endpoint. The marginal cost of the twentieth room is an encoder, a decoder and switch ports. |
| Adding a room | New cable home-run to the equipment room; the frame may need a card. | Two endpoints on the nearest switch. No new home-run. |
| Failure impact | Chassis failure affects every room it serves. | Endpoint failure affects one screen. The rest of the system is unaffected. |
| Skill required | AV technician with matrix experience. | AV plus network literacy: VLANs, multicast, QoS. This is the real cost of distribution. |
| Long-term support | Tied to the chassis generation and its card availability. | Tied to firmware and endpoint supply. Ask who controls both. |
| Best fit | One or two rooms, fixed signal set, no IT ownership of AV. | Multi-room, multi-building, phased rollouts, KVM and wall requirements, sites where IT already runs the LAN. |
In a distributed design the endpoints are commodity-shaped hardware with firmware inside. The value sits in what the manufacturer controls. Four questions reveal whether that control is real.
If the board is a rebadged OEM unit, behaviour changes require the OEM's cooperation. Ask who can fix a multicast bug in the next release, and how long that took last time.
Endpoints from one supplier and management from another is where most distributed projects stall at commissioning: two support queues and nobody owning the integration.
A routing table that lives only inside a running appliance is a single point of failure. Export and re-import of presets and endpoint configuration should be a documented operation, not a support ticket.
Distributed estates fail one endpoint at a time, which is manageable — but only if a spare arrives in days. Confirm lead time for a replacement unit in year four, not at tender.
Media VLAN, IGMP snooping, QoS marking, uplink sizing. Get the switch configuration signed off by whoever owns the LAN before the first endpoint is ordered.
Twelve sources on forty screens is twelve encoders and forty decoders. Quotes built on screen count alone are the most common cause of a mid-project budget conversation.
Retro-fitting recording into a distributed system means storage planning, retention policy and an extra network path. It is cheap at design and expensive after handover.
Endpoint names, room codes and preset names should follow one scheme from day one. Renaming two hundred endpoints later is a project in itself.
If the customer has Crestron, Extron or Q-SYS on site, confirm the API commands and who writes the driver before commissioning week.
Latency figure, simultaneous-view test, failover test and firmware version. Written before installation, not negotiated after.
Lecture theatres, overflow rooms and atrium signage on the campus backbone. Fibre between buildings replaces dedicated AV home-runs that would never have been pulled.
OR and endoscope feeds to teaching rooms, PACS review in conference spaces, and procedure recording with per-department retention.
Several courtrooms sharing evidence display, remote witness and recording, with a central control room monitoring endpoint health across the building.
Any source on any screen, KVM at operator desks, and video walls that keep running when a single decoder fails.
Meeting rooms standardised on one endpoint pair, with central scheduling and a single firmware baseline across the estate.
Head-office content pushed to store displays, local sources still available in-store, all managed from one interface.
Send the rooms, sources per room, screens per room and whether recording or KVM is required. We reply within 24 hours with endpoint counts, a network plan and a phased migration proposal where an existing matrix is being replaced.
Encoders, decoders, KVM, video wall control and centralised management.
Pairing rules, bitrate tables and where latency comes from.
Wall mapping, bezel compensation and synchronised playback on decoders.
The three questions that decide which manufacturer fits a project.
Appliance-managed, integrated and software-only architectures compared on total cost of ownership.
Every major platform we replace, compared at family and model level.
Professional AV manufacturer — Integrated AV Platforms, Distributed AV over IP, and AI Edge Computing & Video Analytics. OEM/ODM for system integrators, distributors and AV brands worldwide.
19 years of AV engineering · Shenzhen, China · 3-year warranty