Stream Bridge Stream Bridge

Send DeckLink / SDI as remote NDI

Stream Bridge captures a feed from any Blackmagic Desktop Video source, capture card, HDMI or SDI, carries it over a low-latency internet route, and publishes it as a named NDI source for vMix, OBS, monitoring, recording or routing.

Signal Flow

4 Simple Steps

  1. Connect your source

    Plug in any DeckLink input: cameras, vision mixers, routers or replay outputs.

  2. Pair both ends

    Install Stream Bridge at each site and pair each device with its connection key.

  3. Bridge the stream

    Pick the source and bridge it to the receiving device. No ports, VPN or network admin.

  4. NDI at the far end

    Your SDI feed arrives as a named NDI source on the receiving network.

How it works

The input stays part of the familiar camera, mixer or router workflow at the source site - Stream Bridge captures it, transports it over the internet, and the receiving system gets a normal NDI source it can select immediately.

The destination isn't limited to NDI. A bridge can also publish OMT or feed selected compatible DeckLink output ports, so you decide how the transported signal leaves the receiving device.

The two locations connect through WebRTC without exchanging public IP details or opening inbound ports. We prefer a direct route, with cloud relay available automatically when the networks are restrictive.

Hardware availability checks, device telemetry, bridge state and automatic recovery are all built into the workflow, so conflicts and connection problems are visible before they become an unexplained missing picture.

Get Started Quickly

To get started straight away, join our beta, download the application, and get streaming. We also have a host of documentation available that goes through all of the features of Stream Bridge, troubleshooting issues, and our support team are ready to help if needed.

Devices

Studio A

Online
Sources 5 sources
Last Seen 18 January 2026 | 10:21 AM
CPU 21%
GPU 20%
Under the hood

Technical Breakdown

Technical detail on the source, audio path, encoding load, picture quality, internet route, and viewer controls.

Supported Sources

Any Blackmagic Desktop Video input the paired device can see.

Explore details

Stream Bridge captures video from anything running through compatible Blackmagic hardware and Blackmagic Desktop Video - capture cards, HDMI and SDI are all supported, covering cameras, vision mixers, routers and replay outputs.

The source needs to stay active and reachable by the paired device. Discovery can take around 30 seconds, and local-sources-only filtering helps simplify busy networks.

Audio

Up to 16 embedded audio channels come through with the picture.

Explore details

Stream Bridge can capture up to 16 audio channels embedded in the source, delivered as individually controllable tracks at the destination.

Viewer links can include additional audio sources with independent level controls. Audio Return and Group Audio can be switched on separately when the remote person needs to speak back.

Performance

NVENC where available, CPU as the fallback.

Explore details

Encoding can run on NVIDIA NVENC or the CPU. NVENC generally gives the lowest latency and CPU use; CPU mode is useful on systems without compatible hardware or where GPU capacity is already committed.

Default limits are four simultaneous GPU encodes and two CPU encodes per device. Use the meters to raise those cautiously and spot overload before it becomes dropped frames.

Viewer Quality & Latency

Live bitrate control, typically under 500ms.

Explore details

The receiver can also route a bridge to OMT or selected DeckLink output ports when those outputs are enabled. Every browser viewer and receiving-device bridge is its own connection - plan sender upload for the bitrate multiplied by the number of simultaneous routes.

Bitrate changes apply live. A practical starting point is 3-5Mbps for most 1080p30 feeds and 5-10Mbps for high-motion or 60fps content, depending on the weakest connection in the path.

Networking

Direct connection first, cloud relay when that's blocked.

Explore details

No VPN or inbound port forwarding is required. Stream Bridge uses ICE to find a workable path between the sending device and each receiver, preferring a direct connection.

If strict NAT or firewall rules prevent that, the session uses our TURN network instead. It improves reachability, but the extra hop can add latency, so wired internet and sensible bitrate headroom still matter for production-critical feeds.

Security & Customisation

Separate links, passwords and named outputs per audience.

Explore details

Viewer links can use readable custom URLs, optional passwords and player customisation, so a client, director, operator and internal team can each receive different controls from the same stream.

Treat device connection keys and viewer links as credentials. Keep connection keys private, password sensitive feeds, and remove links or bridges once an audience no longer needs access.

Send DeckLink / SDI as remote NDI

Frequently Asked Questions

What production teams need to know before configuring this source, route, and destination.

Setup & sources

Anything running through compatible Blackmagic hardware and Blackmagic Desktop Video - capture cards, HDMI and SDI all work. Make sure discovery is switched on, the runtime is installed, and the input isn't locked elsewhere, then create a stream and pick your destination.

As a named NDI or OMT source on the receiving device, and where compatible Blackmagic hardware and Card Output are enabled, it can also be assigned to selected SDI ports.

Many connections operate below 500ms end to end. Fibre-to-fibre direct routes with NVENC can be faster; distance, Wi-Fi, congestion, CPU encoding or TURN relay can all increase delay.

Delivery & performance

Allow at least your configured bitrate for every simultaneous viewer or bridge route, plus headroom. Three independent 5Mbps connections need roughly 15Mbps of stable upload before overhead.

Yes, up to 16 channels, delivered as individually controllable tracks. Additional audio sources can be exposed separately, and return communication is set per viewer link.

Stream Bridge falls back to its TURN relay network automatically. If a source or receiving device goes offline, configured bridges wait and reconnect once it's back.

Related workflows