Internet speed is the single biggest factor in live stream quality. It does not matter how good your camera is if your connection cannot keep up. This guide tells you exactly how much speed you need and what to do if you do not have enough.
Upload speed is what matters
Most people think of internet speed in terms of download speed, because that is what affects browsing, Netflix, and gaming. But live streaming is all about upload speed, the rate at which your device can send data to the internet.
Your download speed could be 100 Mbps and your upload speed could be 3 Mbps. That download speed is irrelevant for streaming. Only the upload matters.
Speed requirements by resolution
For a 720p stream at 30 frames per second, you need at least 5 Mbps of stable upload. This is the sweet spot for most community and grassroots events. The quality is perfectly watchable and the bandwidth requirement is achievable in most locations.
For 1080p at 30 fps, aim for at least 10 Mbps. For 1080p at 60 fps, which is ideal for fast-moving sports, you want 15 Mbps or more. 4K streaming requires 25 Mbps or above and is rarely necessary for community events.
These are minimums. You want headroom above these numbers because internet speeds fluctuate. If your upload speed is exactly 5 Mbps, your stream will buffer every time it dips below that. A 50% buffer, so 7.5 Mbps for a 720p stream, gives you a much more stable experience.
How to test your speed
Go to speedtest.net and run a test from the exact location where you plan to stream. Run it several times over the course of an hour to check for consistency. A single test can be misleading if you happen to catch a quiet moment on the network.
If you are using Wi-Fi, test from the room where your camera will be, not from right next to the router. Wi-Fi speeds drop significantly with distance and obstacles.
What to do if your speed is too low
Switch from Wi-Fi to a wired ethernet connection. This alone often doubles or triples your effective speed by eliminating wireless interference.
If wired is not an option, try a 4G or 5G mobile hotspot. In rural areas, a bonded cellular device that combines multiple SIM cards can deliver surprisingly fast and stable upload speeds.
As a last resort, reduce your stream resolution from 1080p to 720p, or lower your bitrate. A smooth 720p stream looks much better than a stuttering 1080p one.
Stream confidently on any connection
PassCast delivers your stream via enterprise-grade infrastructure that adapts to your viewers connection speed. You focus on the event, we handle the delivery.
Get started free