Dynamic linking and conditional recording with tee

Newcomers
1

Hello, I’m trying to make a simple ml pipeline in agx orin which should record a 10 second video:

nvarguscamerasrc -> streammux -> nvinfer -> nvtracker -> nvosd -> tee (main branch)
t. -> queue -> nvv4l2h265enc -> rtspclientsink (RTSP branch)
t. -> queue -> valve -> nvv4l2h265enc -> h265parse -> splitmuxsink (video recording branch)

I have a probe in nvosd which triggers a callback when there is new track that starts recording by opening a valve or if I don’t use a valve by dynamically linking and unliking of queue and tee pads. However both approaches end up hanging after first video successfully saved. I have tried these branches on their own seperately and they both work fine. Anyone knows whats going on?

2

Not sure there’s enough info here to know what’s going on, but you could take a look at this code example which on demand saves a few seconds of video (with some backlog).

You can remove the backlog part of course if you don’t need it.