Flash Media Server 4.5.2 Released with Robust HTTP Streaming Failover

Version 4.5.2 of Flash Media Server is now available. Besides numerous bug fixes, it includes a major improvement – robust HDS/HLS failover for origins.

packagecluster_wide31It’s not simply a “good-to-have”, but a “must-have” feature for reliable HTTP streaming deployments. The key issues it addresses are liveness and dropout situations.

Liveness is a server-side situation in which a packager advertises a stale bootstrap (that is, a stale view of a live stream).

Dropout is a server-side situation in which a packager has gaps in its bootstrap (that is, gaps in its fragment list).

Flash Media Server 4.5.2 introduces the following new features to address this:

FMS4.0-mnemonic1Best-effort fetch

Best-effort fetch enables the OSMF and iOS video players to continue playback as normally as possible in the presence of short-term liveness and dropout problems on the server-side.

The OSMF 2.0 player adds client-side robustness by supporting best-effort fetch. Specifically, when best-effort fetch is enabled on the server, OSMF 2.0 attempts fetches for fragments that have not been advertised in the bootstrap, but are expected to be present.

For iOS Video players, FMS 4.5.2 enables best-effort fetch for HLS as well.

Control plane application

To implement HTTP Streaming failover, it’s now possible to write a client application that manages the state of events and streams by using a set of REST-based control plane APIs. Control plane is a router term and in effect, that is what your client application does through these APIs.

You can find more detailed information in the FMS failover documentation.

HTTP failover is an absolutely critical improvement for more reliable workflows, therefore Flash Media Server 4.5.2 is an exciting new release for everyone with HTTP streaming deployments.

Download the Flash Media Server 4.5.2 upgrade.

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Jens Loeffler

About Jens Loeffler

Jens Loeffler is a senior technical evangelist on Adobe's Media Solutions product management team focusing on online video and services. Equipped with a media computer science degree, Jens started his career in the agency world and has been living and breathing online video and mobile for the last decade. Currently Jens provides thought leadership as a public speaker and panelist at numerous industry events, and maintains a well-recognized blog covering industry trends. When he isn't working on secret projects at Adobe, Jens compensates with long runs, hikes and walks with his furry companion, and is an excellent guide to judge the authenticity of German cuisine in NYC.

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