Installation guide

Multipoint publishing architecture
Flash Media
Streaming Server 1
(FVSS)
Los Angeles
Flash Media
Streaming Server
New Yo rk City
Flash Media
Streaming Server 2
(FVSS)
London
Publishing Point
Philadelphia
Client
Client
Client
Client
Client
Client
Client
Client
Client
Client
Stream data access
Feature in Flash Media Streaming Server and Flash Media Interactive Server; requires Flash Player
9,0,115,0 or later.
Stream data access allows you to control the ability to take a snapshot of a streaming video as a
bitmap on a per-client basis. For example, you can create dynamic thumbnails and video
previews of streaming content.
Stream data access can be congured in your server-side code. Similar to the readAccess and
writeAccess properties, you can now set audioSampleAccess and videoSampleAccess on
streams. Flash Media Server determines the permission setting for each stream and sends a
special data message to the player. Because this feature uses bitmap data, it is only available with
Flash Player 9 or later.
Data keyframes for live video
Feature in Flash Media Streaming Server and Flash Media Interactive Server; requires Flash Player
6 or later.
Oneofthechallengesinlivevideobroadcastistheneedforcurrentstreammetadatatobesent
to viewers who are connecting midstream. Unlike an on-demand stream, where metadata can
always be at the beginning of the stream and received when a user rst subscribes, live streams
can be subscribed to at any time. erefore, these latecomers may never receive the live stream’s
metadata. Data keyframes eliminate this issue by sending metadata to new subscribers when
they join the stream.
Mobile delivery features
FlashMediaServer3.5canstreamvideoinFLV(OnVP6/MP3)formattomobiledeviceswith
FlashLite3installed.FlashLite3haslimitedimplementationoftheNetConnection and
NetStream classes, so it can only receive video, audio, and metadata packets.
WhenFlashLite3connectswithFlashMediaServer,itsendsuseragentdata.Youcanthenuse
this information to lter access or to deliver video that is optimized for the device. e user
agentstringsentbyFlashLite3consistsof:
• Sowarefamilyandversion—Forexample,FlashLite,version3.0
• Deviceidentication—Forexample,aMotorolaRAZRV3xmobilephone
28