Create and Manage a Bridge Output

Create a named bridge instance with event, language, protocol, host, port, payload, caption behavior, and enabled state.

Best for: XPression operators, graphics engineers, caption operators, broadcast engineers, production IT, and licensed desktop administrators.

Before you start

Requires an active 4All organization/event, authorized desktop account, eligible XPression Bridge license, supported app build, and a network path to 4All plus the selected XPression protocol.

• Document the 4All event/language and XPression scene/DataLinq design.
• Know the bridge/XPression machines, IP interfaces, protocol, direction, port, firewall owner, and final program return.
• Prepare a backup output and an off-air test scene.

Steps

1. Select event/language. Verify with known caption.
2. Choose Add/Create output. Give a clear destination and redundancy name.
3. Choose protocol. WebSocket DataLinq, captioning TCP, RSS HTTP, or UDP.
4. Set bind host/remote host and port. Follow same-machine or LAN design.
5. Choose payload. Simple text, JSON, or XML where supported.
6. Set caption behavior. Line count 1–3, max characters, rolling/instant, partial/final-only, roll step/direction/speed, clear timeout.
7. Save disabled first. Prevent accidental transmission.
8. Start test captions. Validate XPression mapping.
9. Enable/start live source. Verify final program.
10. Duplicate/edit/delete only off air. Preserve logs/config before destructive change.

What success looks like: The Bridge transports the correct 4All caption state to the intended XPression scene with verified formatting, timing, monitoring, and recovery.

Check your setup

• Bridge instance reports running, cloud connected, intended XPression connections, and correct caption payload.

Troubleshooting

Port in use

Choose approved unique port or stop conflicting process.

Bind failure

Check address/interface/firewall.

No cloud captions

Check event live/language/auth/network.

Security and operational notes

• A saved enabled output may start later according to app settings.
• Ports can expose caption data on a LAN.
• Name outputs so operators cannot confuse primary/backup.

Related guides

• Install and Update 4All XPression Bridge
• XPression Bridge Protocol and Payload Reference
• Collect XPression Bridge Logs and Diagnostics

Documentation status: Draft based on XPression Bridge repository version 0.1.59. Validate the installed release, supported OS, license policy, and live graphics workflow before publishing.