Customers of Flash streaming services now have more options for broadcast-quality video delivery on the Internet. With support for Adobe Flash Media Server 3.5, LimelightSTREAM enables dynamic streaming, DVR functionality within a live stream, and enhanced H.264 video and High Efficiency AAC (HE-AAC) audio.

Dynamic Streaming

For an optimum viewing experience, the quality of the video file you deliver needs to match your end user’s available bandwidth. The trouble is, their bandwidth may suddenly drop, perhaps because other users in the house or community start consuming more bandwidth on a shared pipe. Your viewer is left watching (or trying to watch) a high-bit-rate video on a connection that’s too slow to handle the stream, resulting in stutters, stops, and a less-than-positive experience.

Dynamic streaming addresses this common scenario by switching seamlessly to a higher- or lower-quality stream based on available bandwidth — without ever disrupting the flow of video or audio. (Of course, this means you need to have encoded and uploaded the same content as multiple independent files at different bit-rates.)

Although Flash Media Server 3.5 provides the ability to switch files, it’s the Flash client that actually requests the change. The user’s Flash player (version 10 required) monitors current bandwidth and CPU load. If the video buffer is filling up too rapidly or the CPU is nearing pre-defined utilization levels, the Flash client can simply ask the server to switch to a different file.

Dynamic streaming is available for live and on-demand Flash content and supports both .flv and H.264 files types.

Live DVR

Give your viewers the freedom to walk away from a live event without worrying about missing out on the action. Flash Media Server 3.5 supports live DVR, enabling end users to return to portions of live streaming events, even if their Internet connection choked and missed a crucial moment. With Live DVR, you can create streaming video solutions that include instant-replay, catch-up, or seek functionality.

Even with all these interactive features, there’s no transfer of your content to the user’s system. As with all streaming services, Flash Media Server 3.5 caches the live DVR at your discretion.

Limelight Networks expects general availability of Adobe Flash Media Server 3.5 on-demand technologies during Q2 2009 and live streaming during Q3 2009.