Video streaming architecture diagrams usually show a camera, a cloud and a phone, which tells you nothing you can build from. Here's a map you can actually use: five layers, what each one does, and the decisions you make in each.
The five layers of video streaming architecture
Live vs on-demand
Live adds the hard parts: real-time ingest, latency, and scaling for viewers who all arrive at once. On-demand video is mostly storage plus a CDN. If you're doing both, record on the server and push files to object storage, so your replays come out of the same pipeline.
Where to go next
The step-by-step guide to building a video streaming server walks through provisioning, software, CDN, player and hardening.
To see the whole architecture running, start a 14-day free trial of Ant Media Server. Ingest, transcoding, WebRTC and HLS delivery, recording and token security run in one deployment. No credit card needed.
Video streaming architecture FAQ
What are the main parts of a video streaming architecture?
Contribution (ingest), processing (transcoding and packaging), distribution (CDN or WebRTC cluster), playback (players and SDKs) and a control plane for auth and business logic.
Should I use a CDN or WebRTC for delivery?
Use a CDN with HLS for big audiences that just watch. Use WebRTC when viewers need sub-second delay to interact.
Where should authentication happen in a streaming architecture?
In your backend, which issues short-lived publish and play tokens that the media server validates on every request.
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