Hello! I use WowzaStreamingEngine in the following configuration: camera -> origin -> restreamer -> edge. Between origin and restreamer sometimes there are problems with the transmission of packets over a network associated with the geographical location of servers. When these problems are there, I observe the lag of the stream on restreamer relative to the stream on origin. The difference in timestamps can reach 30 minutes. This difference is eliminated if you restart the stream on restreamer. Is this the normal behavior of wowza when there is a problem in the network?
When you say restreamer, are you referring to our live repeater setup?
https://www.wowza.com/docs/how-to-configure-a-live-stream-repeater
If so, you can try this:
Add the following Property to the origin Application.xml /Streams Properties container:
sendOriginalTimecodes true BooleanWe may need more detail on your workflow.
Yes, the restreamer is a liverepeater-edge configuration. Differents in timestamps is an indication that a stream is late. It seems that when there are problems with the network, the restreamer tries to get the full stream from the edge without losing frames. I noticed that the situation changes when I change the type to -lowlatency and add the options onFlishNotifyClients to TRUE and flushInterval = 25. Please explain what these options affect, thanks.
When creating or editing an application in Wowza Streaming Engine you can check the box for Low-Latency which will give a lower latency for Flash connections.
- FlushInterval – The frequency, in milliseconds, that the sort buffer is processed. The default value is 75milliseconds.
I would submit a support ticket @Evgeny Krupenev. 30 min timestamp difference is extremely unusual even with poor network conditions. I know our engineers can help you resolve that.
https://www.wowza.com/support/open-ticket
Also, have you considered SRT for poor network conditions? It can greatly reduce packet loss from encoder to Wowza and also can be used for distribution to CDNs.
https://www.wowza.com/docs/ingest-and-publish-an-srt-stream-with-wowza-streaming-engine
https://www.wowza.com/docs/how-to-use-srt-to-distribute-live-streams
