How to keep your IRL stream alive at packed events

Streaming at a concert, festival, or convention like TwitchCon is some of the best IRL content you can make — and one of the fastest ways to break your stream. When thousands of people are in the same space, all uploading photos and videos on the same cell towers, your mobile signal gets crushed. Bitrate tanks. Stream freezes. Viewers leave.

The good news: this is a solvable problem, and the solution does not require expensive hardware.

Quick glossary before we start

This guide uses a few technical terms often. Here's what they mean:

• SRT / SRTLA: Secure Reliable Transport — the protocol that sends your video stream over the internet. SRTLA adds bonding on top, letting you combine multiple connections into one
• Bonding: Combining two or more internet connections (e.g. WiFi + mobile data) so your stream uses their combined bandwidth and survives if one drops
• Bitrate: How much data your stream sends per second, measured in kbps (kilobits per second) or Mbps (megabits per second). Higher bitrate generally means better image quality, but needs more stable bandwidth
• RTT (Round-Trip Time): How long it takes a signal to travel from your phone to the server and back, measured in milliseconds (ms). Lower RTT means a more responsive, stable connection
• Latency (SRT latency): A buffer that holds a few seconds of video before sending it, giving the protocol time to recover lost data packets without the viewer noticing. Higher latency means more resilience to a shaky connection, at the cost of a small delay
• Relay: A server that sits between your phone and your streaming platform, receiving your stream and passing it on — this is what IRLHost provides
• H.265 / HEVC: A newer video compression format that delivers similar quality to the older H.264 at a lower bitrate, which helps a lot on congested networks

Why crowded events kill mobile streams

Cell towers have a limited amount of bandwidth to share across all connected devices. At a crowded event, you are competing with thousands of other phones for upload bandwidth. Even on 5G, the available upload throughput per device can drop dramatically in a packed venue.

The result: your stream bitrate fluctuates wildly, drops to near zero during peaks, and your viewers see a frozen or buffering stream.

The core fix: SRTLA bonding

SRTLA bonding combines multiple internet connections at once. Instead of relying on a single connection fighting for bandwidth with thousands of other devices, you combine several — for example your phone's mobile data plus a second connection from a spare phone or a travel router — and your stream is spread across all of them.

If one connection drops to near zero, the others keep the stream alive. If each connection gets 2 Mbps upload, combining three gives you 6 Mbps — enough for a solid stream even when any single connection is struggling.

This is exactly what the IRLHost relay is for: bonding needs a cloud server to reassemble the combined stream, and that is what the relay provides. Your phone app handles the bonding on the device side; the relay reassembles it into one feed for your OBS at home.

What you need

• An IRLHost relay server — €11.99/month + VAT
• A PC at home running OBS — or upgrade to IRLHost Pro (€29.99/month + VAT) for a cloud OBS instance instead, no home PC needed
• Moblin (iPhone) or IRL Pro (Android) — both support SRTLA
• A second connection — a spare phone running Moblink, or a travel router with its own SIM (the most important upgrade for events)

Step 1: Add a second connection on a different network

This is the single biggest improvement for event streaming. If your phone's network gets congested, a second connection on a different carrier is usually less congested at the same location. Carriers have different tower locations and different amounts of spectrum at different venues. Most phones can only use one SIM for data at a time, so the realistic way to add a second network is a spare phone or a travel router — not a second SIM in the same phone.

Your options:

• Spare Android phone: Install Moblink on it and pair it with your main phone running Moblin. The spare phone adds a second connection via its own SIM — no extra hardware beyond a phone you probably already have. See our full guide to using a second phone for step-by-step setup
• Travel router with its own SIM: A dedicated MiFi or travel router adds an independent connection path and keeps your phone free
• Dual-SIM phone (rare): Even phones with two active eSIMs typically only use one SIM for data at a time — true simultaneous dual-data connections need specific hardware that's uncommon in consumer phones. Do not count on this for bonding

Two connections on different carriers is dramatically better than one. Three is even better for major festivals.

Step 2: Enable SRTLA in your streaming app

In Moblin (iPhone) or IRL Pro (Android), switch your stream protocol to SRTLA instead of plain SRT. Configure all available connections — WiFi, mobile data, and any spare phone or router — as bonding paths.

IRLHost handles the server side of SRTLA automatically. Your relay reassembles the bonded stream into a single clean feed for your OBS at home.

Step 3: Lower your bitrate before you arrive

Set your bitrate conservatively before you get to the venue — not while you are already struggling with signal.

Recommended settings for crowded events:

• Bitrate: 2000–3000 kbps (lower than your normal outdoor setup)
• SRT latency: 3000–4000ms (higher buffer to absorb short signal gaps)
• Resolution: 720p — a stable 720p stream is better than a choppy 1080p one

If your phone and app support H.265/HEVC encoding, use it. IRLHost is codec-agnostic — it relays whatever your encoder sends. H.265 delivers similar quality to H.264 at roughly 25–40% lower bitrate, which is even more valuable when you're fighting for bandwidth on a congested network.

Step 4: Choose the right IRLHost server region

Pick the server region geographically closest to the event location. Lower latency between your phone and the relay means the SRT protocol has more time to recover from packet loss before it affects your stream.

IRLHost regions: Nuremberg (Germany), Helsinki (Finland), Ashburn (US East), Hillsboro (US West), Singapore.

Step 5: Let IRLHost Link handle drops

Even with the best setup, signal in a crowd can drop out entirely. When that happens, it is your OBS that keeps the stream live — not the relay. IRLHost Link, running on your home PC alongside OBS, automatically switches OBS to a BRB scene when your connection drops, then back to Live when it recovers. Your viewers see a clean holding screen instead of a frozen frame.

Set up IRLHost Link before you go to the event. The offline bitrate threshold (default: 200 kbps) triggers the BRB scene. Consider lowering this to 150 kbps at events where your stream might dip lower before recovering.

Pre-event checklist

• Second connection (spare phone or travel router) confirmed working
• SRTLA enabled in Moblin or IRL Pro
• Bitrate set to 2000–3000 kbps
• SRT latency at 3000ms or higher
• H.265 enabled if your phone supports it
• IRLHost server region closest to event selected
• IRLHost Link running and tested on your home PC
• Power bank fully charged (10,000+ mAh)
• Test stream completed before leaving home

During the event

Watch your IRLHost dashboard on a second device. The real-time bitrate and RTT stats show you exactly how your connection is performing. If RTT creeps above 1000ms, try moving position — sometimes just 20 metres from a crowded area improves signal significantly, as you get away from the densest cluster of devices.

Avoid streaming inside tightly enclosed metal structures — basements, lifts, dense indoor areas at festivals — where signal penetration is inherently poor. If you must, increase SRT latency to 5000ms as a buffer.

Summary

• A second connection (spare phone or travel router) is the most impactful upgrade for event streaming
• SRTLA bonding combines connections — IRLHost handles the server side
• Lower your bitrate and raise SRT latency before arriving at the event
• H.265 helps significantly in low-bandwidth environments — IRLHost relays it automatically
• IRLHost Link on your PC handles signal drops gracefully so your stream stays live

Get started

Sign up at irlhost.gg. IRLHost Plus includes the relay server from €11.99/month + VAT. No PC at home? IRLHost Pro adds a cloud OBS instance from €29.99/month + VAT.