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M
MaxManNH
Inspiring
May 27, 2009
Question

Akamai FMS and FLVPlayback component

  • May 27, 2009
  • 1 reply
  • 1634 views

I have a couple of lessons that I have created in Flash CS3 for Flash Player 9 with AS3.

In the main timeline of the lessons I have an flvplayback component setup to connect to our instance of Akamai's flash ondemand application to stream down several videos.

I have a customer who is behind a client side proxy server that is having an issue where the first 10-15 seconds of the any video plays then the video drops out and it appears that the flash player attempts to make a connection on another port which causes multiple audio streams to play but the video never comes back.

From the network sniffer read out that their IT send me it appears that the flash player initially attempts to get out on port 80 then attempts port 1935 then attempts 443.

Can anyone tell me if there is anyway to stop the flvplayback component from attempting multiple connections?

Or does anyone have any insight as to why this is happening?

I created a stripped out application that just has a flvplayback component in it and when the end user opens that one it streams the video fine. I can only assume that my lessons which are using scorm and webservices to make database updates are reaching some bandwidth limit that the end users proxy doesn't like.

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    1 reply

    A
    Anonymous
    June 3, 2009

    Greetings,

    Here are a couple of tech notes about ports & firewalls & Flash Media Server that should have some useful information, including how to specify a single port in a connection string (if only for testing purposes):

    Flash Media Server Port Connection Test

    http://kb.adobe.com/selfservice/viewContent.do?externalId=tn_16466

    About Flash Media Server Ports

    http://kb.adobe.com/selfservice/viewContent.do?externalId=tn_16499

    Regarding the FLVPlayback component, it doesn't use any special connection logic. If you specify a port in the rtmp string in the source parameter of the FLVPlayback component, Flash Player attempts to connect to FMS using that port only. Otherwise, Flash Player has its own port sequence: 1935, 80, 443. Many developers write their own client-side connection logic because the Flash Player logic can take quite awhile to run. Create an array of port numbers and specify them one at a time in your NetConnection.connect() call. Capture the NetStatusEvent to determine whether the connection succeeds or fails. If the connection fails, try to connect using the next port number in the array. There's a simple code sample in the Ports technote.

    Hope that helps,

    Jody

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