Hi, Our vendor has supplied us with a new JP5.1 image for their custom xavier box. I think there is a folder missing from the nvidia container runtime mapping? I see a lot of errors with gstreamer complaining about /lib/modules/5.10.104-tegra missing. This error goes away after adding the mapping …

For sure that’s the reason. With some help from my colleague we were able to narrow down the cause of the issue to a signal line in python. It seems some old code meant to prevent zombies was breaking the plugin loader mechanism - but ONLY for the h265 encoder component. The offending line: signa…

I seem to have fixed this - by moving the Gst.Init() and Gst.ElementFactory.make() further up in the file near the top. Not sure why this would make any difference tho!? I see strange new warnings in gstreamer output now as well: 0:07:47.326174101 1 0x39a4b700 WARN bufferpool …

Hi, Probably the python version triggers the issue. Please try python 2.7 and 3.8, to clarify if the failure is specific to either version.

I’m using the python3.8 provided in the l4t-base:35.2.1 container. It does work now after reordering but I don’t understand why. Can there be a race condition trying to load plugins?

I don’t have any problem when I use gst_parse_launch - but this is not useful for a more complex pipeline. Indeed it may depend on when Gst.init(None) is called. Moving this right up to the top seems to fix everything - but I don’t understand why. This worked fine with older jetpack.

Hi, Jetpack 4 releases are with gstreamer 1.14.5 and Jetpack 5 releases are with 1.16.3. Maybe this is why the behavior is different.

JP5.1 - python gstreamer cant load plugin nvv4l2h265enc

Robotics & Edge Computing Jetson Systems Jetson AGX Xavier

DaneLLL March 7, 2023, 9:38am 6

Hi,
We have tried this sample and it works:
Nvv4l2decoder sometimes fails to negotiate with downstream after several pipeline re-launches - #16 by DaneLLL

Please give it a try. Calling Gst.init(None) at the very beginning looks good and valid.

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JP5.1 - python gstreamer cant load plugin nvv4l2h265enc

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