How Video Works in OTT Platforms

A practical walkthrough of OTT video delivery, inspired by howvideo.works: encoding, manifests, CDNs, players, DRM, and playback quality.

Reference: https://howvideo.works/

OTT video starts with source media. A mezzanine file is encoded into multiple bitrates and resolutions so the player can adapt to changing network conditions.

Those encoded renditions are split into small segments and described by manifests such as HLS or DASH. The manifest is the player's map: it lists qualities, audio tracks, captions, and segment URLs.

A CDN moves those segments close to viewers. The player then measures bandwidth, buffer health, device capability, and chooses the best rendition through adaptive bitrate logic.

Production OTT systems also need DRM, analytics, ad insertion, subtitles, live latency control, and error recovery. The real craft is making all those pieces feel invisible to the viewer.