Hello all, I’m building an application that uses Unreal Engine 5 running on the Xavier NX in Jetpack 5. The actual UE5 application and GStreamer pipeline works fine when using conventional gstreamer elements eg: x264enc. But when I include Jetpack 5 specific components, specifically nvv4l2h264enc …

I finally figured out what’s wrong! Basically removing a shared library on the Xavier fixed the issue $ sudo mv /usr/lib/aarch64-linux-gnu/tegra/libv4l2_nvargus.so /usr/lib/aarch64-linux-gnu/tegra/libv4l2_nvargus_back.so Here’s the reference thread that I used to figure it out. It has something t…

You may try: videotestsrc ! videoconvert ! video/x-raw,format=NV12 ! nvvidconv ! nvv4l2h264enc ! h264parse ! avdec_h264 ! nvvidconv ! autovideosink # Or better use nvv4l2decoder videotestsrc ! video/x-raw,width=320,height=240,framerate=30/1 ! nvvidconv ! video/x-raw(memory:NVMM),format=NV12 ! nvv4…

Interesting For the avdec_h264 to work, I had installed some dependencies first. Otherwise, the element doesn’t exist. Reference to dependency install It should work with the is-live flag on app-src. The command below worked for me after installing the deps in the link above gst-launch-1.0 video…

Seems you would just need to do: // start playing gst_element_set_state(pipeline, GST_STATE_READY); gst_element_set_state(pipeline, GST_STATE_PAUSED); gst_element_set_state(pipeline, GST_STATE_PLAYING); with your original pipeline. No idea why using nvv4l2decoder may not be able t…

Hmm. Disabling the sync doesn’t allow me to launch that pipeline. But regardless, I accidently diverged from the root error that I was trying to solve. When a C++ program is built via the native Jetpack5 toolchain. Specifically using GStreamer’s gst_parse_launch() api. The pipeline works as expect…

Hi, Please try $ DISPLAY=:0 gst-launch-1.0 videotestsrc num-buffers=166 is-live=true ! videoconvert ! video/x-raw,format=NV12 ! nvvidconv ! nvv4l2h264enc ! h264parse ! matroskamux ! queue ! matroskademux ! h264parse ! nvv4l2decoder ! nv3dsink Looks like it needs to mux the stream so that the time…

GStreamer NVV4L2H264enc fails at runtime with cross compiler

Robotics & Edge Computing Jetson Systems Jetson Xavier NX

Honey_Patouceul April 24, 2023, 8:30pm 6

Currently no… I haven’t been playing with UnrealEngine since a few years. If you have a way to reproduce your case I may try to reproduce, but not sure I can solve it. You may also try to preload libgomp as here Unable find avdec_h264 after intsalled gstreamer plug-ins into Jetson AGX Orin - #6 by Honey_Patouceul

I’ll try tomorrow with a Xavier NX running R35.2 (so far sharing testing on AGX Orin with R35.1).

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GStreamer NVV4L2H264enc fails at runtime with cross compiler

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