Skip to main content
S
storm767
Known Participant
September 4, 2010
Question

Recorded FLVs manipulation

  • September 4, 2010
  • 1 reply
  • 339 views

Hi,

I'm creating a Flex application that enables users to communicate in a kind of video chat room. I only allow to live streams at any given moment.

I'm using FMS to record the videos in FLVs.

What I need to do is post process those videos and create a single video with all that happened in the video room. That means that I need to combine 2 videos, reduce the size of one of them so it appears over the other one. In other words one video will use the whole space an the other will appear at the upper left corner (over the other video,).

I need a server side solution for this. I created another post here and someone suggest a screen capture solution. That would work perfectly, but since this appliction will be used for several people and any time, I want the process to be automaticaly not manual.

So, I'm thinking I can do it with FFMPEG, but I need a way to identify in which order I need to compose the videos. Something like adding a time stamp to each FLV in FMS (when they are recorded). How can I add custom metadata to the FLV? would I be able to read it later? any ideas will be appreciated.

Tks.

    This topic has been closed for replies.

    1 reply

    A
    Adobe Employee
    amit_kr
    Adobe Employee
    September 5, 2010

    You can add custom metadata using ns.send method but this"ns" ie netstream should be the publishing netsream. So you can use the Flash Player client which uses webcam to publish using ns.publish and then again use the same ns to insert custom metadata by calling ns.send. Here is a sample code snippet:

    function netStatusHandler(event:NetStatusEvent):void
    {
    trace("In netStatusHandler...");
        try
        {
       if(event.info.code=="NetStream.Publish.Start"){
       setCustomMetadata();
      }
        }
        catch (error:TypeError)
        {
            // Ignore any errors.
        }
    }

    function setCustomMetadata():void{

    ns.send("onCustomData", "hello");
    }

    To retrieve this you need to use following client code:

    if(info.code=="NetConnection.Connect.Success"){
      ns = new NetStream(nc);
      ns.addEventListener(NetStatusEvent.NET_STATUS, netStatusHandler);
      client = new Object();
      ns.client = client;

      client.onCustomData= onCustomDataHandler;
           
    }

    function onCustomDataHandler(str:String):void{
    trace("onCustomData: " + str);
    }

    Regards,

    Amit

    Terms & ConditionsAccessibility statement
    Using the community Terms of use Privacy Cookie preferences Do not sell or share my personal information ad choicesAdChoices