Deepstream 6.4 and very low FPS

General Discussion
1

I have a pipeline with multiple rtspsrc input bins muxed by nvstreammux → nvinfer → nvdsosd → nvstreamdemux → fakesink. nvstreammux have live-source enabled.

The strange thing is that if i am running 2 inputs, FPS seems to be normal. But if running with a single stream, the FPS drops a lot. The same drop for 3 streams.

I am very confused. Do anyone had the same experience ?

Thanks in advance!

2

Looks like the main issue in the element nvstreammux. I changed batched-push-timeout=20000 and the problem were reduced.

Here is a lot of details to be tuned for nvstreammux to get this consistent, hopefully: Gst-nvstreammux New — DeepStream documentation 6.4 documentation.

Very sad that this core element is so fragile. FPS is the weakness there.

3

Please keep in mind that most of the elements you mentioned are not provided by the GStreamer project but by a 3rd party. They are definitely not “core”.

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