Use-cases

Open captions driven by REST API calls

To get the REST API up and running, you need to add the below HTTP provider to your VHost.xml file:

<HTTPProvider>
    <BaseClass>com.raskenlund.caption.HttpProviderCaptionApi</BaseClass>
    <RequestFilters>captions*</RequestFilters>
    <AuthenticationMethod>none</AuthenticationMethod>
</HTTPProvider>

You need to add ModuleLiveOpenCaptions module to your Application.xml

<Modules>
    ...
    <Module>
        <Name>ModuleLiveOpenCaptions</Name>
        <Description>ModuleLiveOpenCaptions</Description>
        <Class>com.raskenlund.caption.ModuleLiveOpenCaptions</Class>
    </Module>

</Modules>

You have to enable transcoder in the application via the Engine Manager UI or directly in the xml:

<Transcoder>
    <!-- To turn on transcoder set to: transcoder -->
    <LiveStreamTranscoder>transcoder</LiveStreamTranscoder>

You also need to set the raskenlund.803.license application property:

<Property>
    <Name>raskenlund.803.license</Name>
    <Value>W803-1038-xxxx-xxxx-xxxx</Value>
    <Type>String</Type>
</Property>

Assuming your application is called live and your incoming stream is called myStream, you can trigger a test caption using curl:

curl --location --request POST "http://localhost:1935/captions/v1/applications/live/streams/myStream/caption"
\ --header "Content-Type: application/json" --data-raw "{
\"captions\": [
    {
        \"textData\": \"Hello World, this is the captioning module\",
        \"language\": \"en\",
        \"wpm\": 10
    }
],
\"delay\": 0
\}"

CEA608 captions driven by REST API calls

To get the REST API up and running, you need to add the below HTTP provider to your VHost.xml file:

<HTTPProvider>
    <BaseClass>com.raskenlund.caption.HttpProviderCaptionApi</BaseClass>
    <RequestFilters>captions*</RequestFilters>
    <AuthenticationMethod>none</AuthenticationMethod>
</HTTPProvider>

You need to add ModuleOnTextDataToCEA608 module to your Application.xml

<Module>
    <Name>ModuleOnTextDataToCEA608</Name>
    <Description>ModuleOnTextDataToCEA608</Description>
    <Class>com.raskenlund.caption.ModuleOnTextDataToCEA608</Class>
</Module>

You need to set the raskenlund.803.license application property:

<Property>
    <Name>raskenlund.803.license</Name>
    <Value>W803-1038-xxxx-xxxx-xxxx</Value>
    <Type>String</Type>
</Property>

You need to configure the below timed text settings in the application:

<TimedText>
    <VODTimedTextProviders></VODTimedTextProviders>
    <!-- Properties for TimedText -->
    <Properties>
        <Property>
            <Name>captionLiveIngestType</Name>
            <Value>onTextData</Value>
            <Type>String</Type>
        </Property>
        <Property>
            <Name>captionLiveIngestLanguages</Name>
            <Value>eng,nld,nor,hun</Value>
            <Type>String</Type>
        </Property>
    </Properties>
</TimedText>

WebVTT captions driven by REST API calls

Please follow the setup for the CEA608 captions, except that you should not add ModuleOnTextDataToCEA608 to the application, but configure the below timed text property instead:

<TimedText>
    <VODTimedTextProviders></VODTimedTextProviders>
    <!-- Properties for TimedText -->
    <Properties>
        <Property>
            <Name>cupertinoLiveCaptionsUseWebVTT</Name>
            <Value>true</Value>
            <Type>Boolean</Type>
        </Property>