Experimental
@aws-cdk/aws-medialive-alpha is an experimental (alpha) package: its API may change in any release, without a major version bump.
AutomaticInputFailover Struct
Automatic input failover configuration for an input attachment.
When the active (primary) input meets any of the failover conditions, MediaLive switches to the secondary input without restarting the channel. This is input-source redundancy, distinct from the pipeline redundancy provided by ChannelClass.STANDARD.
Example
ts
declare const stack: Stack;
declare const primaryInput: medialive.IInput;
declare const secondaryInput: medialive.IInput;
declare const audioSelector: medialive.AudioSelector;
declare const video: medialive.EncodeConfiguration;
declare const audio: medialive.EncodeConfiguration;
declare const bucket: s3.IBucket;
new medialive.Channel(stack, 'Channel', {
inputs: [{
input: primaryInput,
automaticInputFailover: {
secondaryInput,
inputPreference: medialive.InputPreference.PRIMARY_INPUT_PREFERRED,
errorClearTime: Duration.seconds(3),
failoverConditions: [
medialive.FailoverCondition.inputLoss({ threshold: Duration.millis(1500) }),
medialive.FailoverCondition.audioSilence({ audioSelector, threshold: Duration.seconds(2) }),
medialive.FailoverCondition.videoBlack({ blackDetectThreshold: 0.1, threshold: Duration.seconds(1) }),
],
},
}, {
// The secondary input must also be attached to the channel as its own input.
input: secondaryInput,
}],
outputGroups: [
medialive.OutputGroupConfiguration.hls({
name: 'hls',
destinations: [medialive.OutputDestination.toBucket(bucket, 'live/stream')],
outputs: [{ encodes: [video, audio], outputName: 'hls_out' }],
}),
],
});
Properties
errorClearTimeoptionalDurationerror_clear_timeoptionalDurationerrorClearTimeoptionalDurationErrorClearTimeoptionalDurationErrorClearTimeoptionalDuration#How long a recovered input must remain free of failover conditions before it is considered healthy.
Default: MediaLive service default
Particularly relevant with InputPreference.PRIMARY_INPUT_PREFERRED.
failoverConditionsoptionalFailoverCondition[]failover_conditionsoptionaltyping.List[FailoverCondition]failoverConditionsoptionalList<FailoverCondition>FailoverConditionsoptionalFailoverCondition[]FailoverConditionsoptional*[]FailoverCondition#The conditions that trigger failover to the secondary input.
Default: a single input-loss condition with the MediaLive service default threshold
inputPreferenceoptionalInputPreferenceinput_preferenceoptionalInputPreferenceinputPreferenceoptionalInputPreferenceInputPreferenceoptionalInputPreferenceInputPreferenceoptionalInputPreference#Which input to prefer once a failed input has recovered.
Default: EQUAL_INPUT_PREFERENCE, applied by MediaLive