How to schedule live stream with StreamPublisher?

I have a problem with schedule live stream with StreamPublisher. I success with scheduled mp4 file, but then I try to schedule live stream - nothing happens.

This want I wrote in smil file:

Can you verify the stream is published? Are you able to play the live stream outside of the scheduled stream?

Yes you are correct. Glad you’ve got it working.

Can you verify the stream is published? Are you able to play the live stream outside of the scheduled stream?

Yes I can play the live stream.

Yes, it published the stream, but when I try to play it - no video and audio, only show me that it try to load somthing

I got it, I need to start stream that need to be scheduled first, before scheduled it. Thanks for help.