Rtsp stream, EOS event. Need to restart pipeline

Application Development
1

Hi.

I have rtsp stream from camera, and eventually after sometime pipeline get Eos message and stops. I need to handle this event and restart pipeline. What is the best approach for this? Can I reuse existing pipeline or it is better to create new one and reconnect?

Here is chunk of code I have:

 var bus = pipeline.Bus;
 bus.Message += HandleBusMessage;
...
 protected virtual void HandleBusMessage(object o, MessageArgs args)
        {
            // handle interested events
            switch (args.Message.Type)
            {
                case MessageType.Unknown:
                    break;
                case MessageType.Eos:
                   //do smth here 
                   break;
                case MessageType.Error:
                    break;
                case MessageType.Warning:
                    break;
                case MessageType.Info:
                    break;

                case MessageType.StateChanged:
                    break;

                case MessageType.StreamStatus:
                    break;
            }
        }

Thanks in advance.

2

Usually cycling the pipeline through READY or NULL state is the simplest approach to restart after EOS was emitted by the server.

3

In the GStreamer Rust plugins module there’s a fallbacksrc element which can restart a source input automatically if it goes down, in case that looks useful for your use case.

1 Like
4

And it restart sources on EOS?

5

I see, please note this behaviour is under a property:

https://gstreamer.freedesktop.org/documentation/fallbackswitch/fallbacksrc.html?gi-language=c#fallbacksrc:restart-on-eos

6

Thank you for reply! But what should I do in case I got error msg? It seems that trying to restart:

  RtspPipeline.SetState(State.Null);
  RtspPipeline.SetState(State.Ready);
  RtspPipeline.SetState(State.Playing);

is useless, it simply looping in error state. Should I completely recreate pipeline from scratch or there is chance to save current pipeline?

7

Its depends what the error is. And you may want to pace the retries too.

8

Thank you.

Its depends what the error is. And you may want to pace the retries too.

How can I get error type, is it possible?

9

You may want to read the error message documentation:

https://gstreamer.freedesktop.org/documentation/gstreamer/gstmessage.html?gi-language=c

1 Like