Why upload speed decides internet for live streaming
Speed tests lead with download, but a stream is the opposite: everything leaves the site. Many standard plans have upload at a small fraction of download, so a connection that looks generous on paper can struggle with one good-quality stream plus everything else happening in the building.
Steady matters as much as fast. A stream sends data continuously, so a connection that averages well but dips under load will still drop frames. That's why we plan for the busiest moment, with the room full and guest devices active, rather than measuring an empty venue on bump-in day. Our guide to upload speed for live streaming works through the maths.
Upload to plan for when you live stream an event
Starting points, confirmed once we know your encoder settings and platforms.
| What's going out | Upload to plan for | Notes |
|---|---|---|
| One live stream | About 10–20 Mbps steady | Headroom of roughly 1.5–2× the stream bitrate |
| Two streams from site, such as two platforms | About 20–40 Mbps steady | Each stream sent from site counts separately |
| Remote presenters on video calls | About 1.5 Mbps each way per person | Add these on top of the stream |
| Photos and video uploaded during the event | Far more than a stream | Large files decide the plan; tell us sizes and deadlines |
| Staff and guest devices on the same connection | About 0.5 Mbps per active device | Kept on separate networks with limits so they can't crowd out the stream |
The event bandwidth calculator adds these up for your event.
Send a floor plan or the venue name. We reply with what the network needs and one written quote.
How we set up internet for a live stream
Upload-first connection
We choose the connection by its upload: a fixed-line or fibre service with strong upload where the address allows, or a venue line we've tested under load.
Wired port at the stream position
A cable from the switch to the encoder or streaming laptop, so the stream never depends on WiFi. See temporary network cabling.
Separate production network
Encoders, cameras, control laptops and the production team get their own network, apart from guests and other staff.
A second path out
A 4G/5G router as a backup internet connection where the stakes justify it, with an agreed plan for what moves onto it.
Testing before go-live
A test stream from the real position, with your encoder and platform, while the venue is as busy as we can make it.
Testing the stream connection before go-live
A test plan we agree with your production or AV team.
Measure at the stream position
Upload measured through the cable your encoder will use, not on a phone in the foyer.
Run a private test stream
Your encoder, settings and platform, streamed to a private destination for long enough to see any dips.
Test under load
Where possible, during rehearsal or a soft open while other networks are busy, not in an empty room.
Rehearse the backup
If there's a backup connection, switch to it deliberately and confirm the stream recovers, so nobody is surprised on the day.
Hybrid event internet: two audiences on one site
A hybrid event serves people in the room and people watching remotely, and they put opposite pressures on the network. The in-room crowd wants coverage and a fair share of WiFi; the remote audience depends on upload and stability. We plan them as separate networks on the same connection, or on separate connections when the stakes are high. Our hybrid event internet page covers the room side, and the hybrid event connectivity checklist helps your team prepare.
Questions people ask
What internet speed do I need to live stream an event?
Plan around upload, not download. Each live stream needs about 10–20 Mbps of steady upload, with headroom of roughly 1.5–2 times the stream's bitrate. Add about 1.5 Mbps each way per remote presenter on a video call, and much more for large file uploads. Then make sure guest and staff traffic can't eat into that upload.
Can I live stream an event over 4G or 5G?
It can work for a small, low-stakes stream, but it's risky as the main connection. Upload on mobile networks is limited and site-dependent, and networks can congest when a crowd gathers, which is exactly when the stream matters. 4G/5G is more useful as a backup alongside a fixed line or a tested venue connection.
Should a streaming encoder use WiFi or a cable?
A cable, wherever possible. A wired port at the stream position removes the biggest variable, which is WiFi shared with the room. EventWiFi runs a cable from the network switch to the encoder or streaming laptop, on a production network separate from guests. WiFi is kept for devices that genuinely need to move.
Can the venue's internet handle our live stream?
Sometimes. Ask the venue for the upload speed, whether the line is shared with other rooms or tenants, and whether you can have a wired port at the stream position. We can test the venue line under load. If upload is too low or shared, we add a dedicated connection just for the stream.
When should we test the stream before the event?
Test during bump-in or rehearsal, from the real stream position, with the encoder and platform you'll use live. A test stream run while the venue is busy tells you far more than a quick speed check in an empty room. If there's a backup connection, rehearse switching to it during the same test.
Do you operate the cameras and the stream?
EventWiFi's part is the internet and network behind the stream: the connection, wired ports, production network, backup and testing. Cameras, encoding and the stream itself are run by your production or AV team. We coordinate with them on positions, cable runs and the test plan, so the network is ready when they are.
