What is a CDN for live video?
A CDN for live video is the delivery layer that gets a live stream from a central origin out to lots of viewers. Instead of every viewer pulling video from one server, the CDN caches and serves stream segments from edge servers closer to the audience.
How a live video CDN works
Your encoder sends video to an ingest or origin system, which packages the live feed into small playable chunks. A content delivery network then distributes those chunks across edge servers in different locations.
When viewers press play, they are usually served by a nearby edge rather than the origin. That spreads load, shortens network distance and keeps one popular event from overwhelming a single server.
Why CDNs matter for playback
CDNs are about viewer delivery. They help thousands or millions of people watch the same live stream by moving playback traffic closer to them, absorbing spikes and giving players a better chance of steady segment downloads.
They can also improve startup time and reduce buffering, but they do not remove every kind of latency. The full delay viewers feel also depends on the encoder, protocol, player buffer, platform settings and the viewer’s own connection.
- Scale: many viewers can watch without hammering one origin server.
- Reach: edge servers reduce distance between viewers and video files.
- Stability: traffic spikes are spread across the delivery network.
CDN vs restreaming relay
A CDN delivers playback to viewers. A restreaming relay fans one incoming live feed out to destinations such as YouTube, Twitch, Facebook, TikTok, Kick or a custom endpoint. They solve different parts of the live-video chain.
When you relay to a major platform, that platform normally runs its own CDN for its viewers. The relay’s job is to get your clean feed to each platform or endpoint reliably, not to replace the platform’s playback network.
Where your own watch page fits
If you want viewers on your own site, you need more than a destination relay: you need a watch page or embed and a playback path that viewers can open in their browsers. That can be useful for events, internal broadcasts, customer updates and branded pages.
For most creators and teams, the practical setup is a relay for contribution and distribution to platforms, plus platform CDNs or a hosted watch page for viewers. That keeps ingest simple while still giving audiences a place to watch.
Frequently asked questions
Is a CDN the same as restreaming?
No. A CDN delivers video playback to viewers, while restreaming relays one incoming feed to multiple platforms or endpoints. They often work together.
Do I need a CDN to stream to YouTube or TikTok?
Usually no. When you send your feed to a major platform, that platform handles viewer playback through its own delivery network.
Can Stream Repeater host a live stream on my website?
Yes. Stream Repeater offers a public watch page and embeddable player with your logo and colour, alongside relays to platforms and custom destinations.