Stream latency pressure not getting fired

[abdulaziz siddiqi]

I've run into a scenario where we are consistently publishing frames successfully to a stream but the buffer overflow callback and drop frame callbacks are getting fired. I looked at the exact moment when the content view duration went passed the max_latency duration and no stream latency pressure callback was fired around that time segment. This is for a REAL_TIME configured stream.

Will resetting the connection at buffer overflow callback be ideal in this scenario? Will the stream recover in such a way that the stream publishes at a faster rate than the one defined in StreamInfo to make up for the lost time and to keep some extra space in the buffer for future hiccups?

Additionally, I was wondering what is the difference in behavior for NON_REALTIME vs REALTIME?

[Mushegh Malkhasyan]

There are multiple questions here.

1. I am not sure why latency pressure callback is not firing. Check that you have realtime mode specified, the maxLatency is specified that's non-zero and smaller than the overall buffer duration, ensure the callback is non NULL. In Java code it shouldn't be NULL but I am not sure whether there have been any changes on your side.
2. Buffer overflow is a static 85% of the buffer so you could indeed use that to trigger a connection reset. Make sure you add some logic to "ignore" the callback as the act of resetting the connection will still trigger the callbacks. The C SDK Continuous Retry Policy callbacks do just that.
3. The recovered stream will stream faster than real-time if the bandwidth allows to catch up with the head.
4. The rate defined in StreamInfo is to optimize the content view (or temporal view) allocations. The streaming is always geared towards maximizing the bandwidth.
5. There are 3 modes defined currently but only two are used - the realtime and the offline. In offline mode, the media thread producing the frames will be blocked awaiting the availability (or a timeout will happen on the putFrame call).