With AWS Elemental MediaLive you can now suppress the delivery of one or both MediaLive encoding pipelines to their configured destinations on a schedule. The live channel continues to be processed while delivery is “paused” and will continue to incur non-idle charges, but content will not be sent to any destination packagers or origins. This can be used to change the input source in AWS Elemental MediaPackage when using the input redundancy feature. You can also suppress output completely and resume it at a scheduled time, which lets you start the delivery of the channel at a precise time.
Source:: Amazon AWS