Control a Livestream

Livestream control of live streaming is managed as a state machine. The following diagram illustrates the state transitions of a Livestream driven by control operations. The rectangles represent the states a Livestream may reside in. The arrows indicate the possible transitions between states that occur when certain events or conditions are met, such as the start of a scheduled event, the completion of server setup, or the initiation of a Livestream.

Here is the explanation of each state:

State	Description
Scheduled	This is the initial state of an event when it is scheduled but not yet ready for streaming.
Preparing	When the scheduled event is less than 12 hours away, the status changes to "Preparing." At this point, the infrastructure is being set up for the event.
Wait for Preview	After the infrastructure is set up, the status changes to "Wait for Preview." The streaming server has been built-up but is still not open for pushing signals.
Preview	When the server is ready, the status changes to "Preview," indicating that the event can start sending signals and rehearsing.
Live	After the "Go Live" action is triggered, the event is live, and the status changes to "Live."
Encoding	Once the live event has ended, the content is transcoded to VOD by BlendVision encoding service, and the status changes to "Encoding."
VOD Ready	When the VOD is ready to be broadcast, the status changes to "VOD Ready," indicating it is waiting for the scheduled time.
VOD	Once the transcoding has been completed and the live event can be played as VOD content, the status changes to "VOD."
Live END	When the live-only event ends or the VOD of a Live to VOD event ends, the status changes to "Live END."
Closed	When the event is canceled or successfully ended, the status changes to "Closed," and the channel can be re-opened and recreated.
Archived	When the channel is archived, the status changes to "Archived."