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Live-to-VOD transition

What you learn​

You're instantiating DIVA Player in your your Roku app and relying on DIVA Back Office as the video streaming source.

The goal of this article is to build the simplest Roku app to stream a video from the DIVA Back Office and manage the video transition from Live to VOD.

Before starting​

  • Ensure Diva Player lib and DIVA Back Office Adapter lib downloaded. (Setup > Step 13).
  • Ask your video engineers team the <video id> and the related <settings URL>.
  • Ensure the VideoMetadata contains the asset state, which is what your app reads to get whether the video is either Live or VOD.

Instantiation​

Write the Basic instantiation code, then add the code to read the assetState within the VideoMetadata:


sub launchBOAdapter(launchParams as object)
    m.prevAssetState = ""
    m.assetState = ""
    m.prevVideoId = ""
    m.videoId = ""

    m.boAdapterNode = CreateObject("roSGNode", "DivaBOAdapter:DivaBOAdapter")
    ...
    m.boAdapterNode.observeField("videoDataNode", "onBOAdapterVideoDataNodeHandler")
    ...
end sub

sub onBOAdapterVideoDataNodeHandler(evt as dynamic)
    data = evt.getData()

    m.videoId = data.videoId

    assetState = data.assetState
    if assetState <> invalid
    m.assetState = lcase(assetState)
        if m.prevAssetState = "vod" and m.assetState = "live" and m.videoId = m.prevVideoId
            'Write the logic when transitioning from Live to VOD <----
        end if
        m.prevAssetState = m.assetState
    end if
    m.prevVideoId =  m.videoId

    ' Setup Diva Player Metadata
    m.dpUtilsNode.callFunc("setMetaData", data)
end sub