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HTTP Dynamic Streaming utilizes the same HTTP server technology used to delivery progressive downloaded video. The new technology is different because it adds:
- Multibitrate support — ability to shift quality depending on bandwidth and computer power. HTTP progressive delivery consumes more bandwidth because it's not intelligent enough to throttle the delivery (for example, a 30-minute video will be fully downloaded whether the user watches it or not).
- Seeking within the video — ability to move around within a long-format video without downloading it first
- Bandwidth control — ability to manage download bandwidth to not disrupt other applications
- Support for live streaming with DVR and real-time protection using Adobe Access
To deliver a streaming experience over HTTP, media assets need to go through a fragmentation process that can also apply content protection (called fragmenting), and a special module installed in the HTTP server is required. The player can be built using OSMF, just like progressive download.
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