Channel is waiting for the input stream through the input.
Starting
Channel is starting.
Stopped
Channel is stopped, finishing live streams.
Stopping
Channel is stopping.
Streaming
Channel is getting the input stream, generating the live streams to the
specified output location.
StreamingError
Channel is running, but has trouble publishing the live streams onto the
specified output location (for example, the specified Cloud Storage
bucket is not writable).
StreamingNoInput
Channel is generating live streams with no input stream. Live streams are
filled out with black screen, while input stream is missing.
Not supported yet.