Internet and backup power requirements for livestreaming an event

Measure upload capacity at the venue

Upload speed determines how much video you can send to the platform; download speed alone is not enough. Test at the camera and encoder location, ideally around the planned event time. Prefer a wired connection where practical and agree how other users will share the venue network.

Choose resolution, frame rate and bitrate using the platform's current encoder guidance. Run a sustained private test broadcast and inspect dropped frames and stream health. Leave spare upload capacity above the combined video and audio bitrate; one short speed test is not a guarantee.

Estimate your data allowance

For planning, data in decimal gigabytes is approximately total bitrate in Mbps × hours × 0.45. A combined 6 Mbps feed running for two hours uses about 5.4 GB before network overhead. This is a calculation example, not a recommended bitrate. Add capacity for rehearsals, overhead, retries and any additional outgoing feeds.

Sending separate feeds to multiple platforms can increase local upload and data requirements. A cloud restreaming service changes that arrangement, so confirm the actual workflow with your team.

Prepare a tested internet fallback

Assess a second connection with different failure risks, such as another mobile network where coverage allows. Check it at the venue, provision sufficient data and rehearse switching. Two connections using the same upstream infrastructure can fail together. Bonding and automatic failover need compatible equipment and configuration; simply having two SIM cards does not provide seamless switching.

Keep the whole signal chain powered

List the cameras, audio equipment, switcher, encoder, router and any network terminal that must stay on. Size backup power for the measured load and required runtime, including capacity losses and manufacturer limits. A laptop battery will not protect an unpowered router or audio desk.

A UPS may bridge a short interruption while a longer-runtime backup takes over. Have the venue's qualified electrical team handle generator connections and power distribution, and keep generators outdoors away from occupied spaces. Test the changeover before the event.

Final rehearsal checklist

Run the real production setup, watch it on a separate viewer device and test the fallback deliberately before guests arrive.

• Confirm upload stability, remaining data and platform stream health.
• Check backup power runtime and all devices on the protected circuit.
• Test sound, slides and camera views together.
• Record locally and agree how the team communicates a disruption.