nvcompositor does not work

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
1

Hi,

nvcompositor does not work when the video source is a camera

my gstreamer command :

gst-launch-1.0 nvcompositor name=comp sink_0::xpos=0 sink_0::ypos=0 sink_0::width=1280 sink_0::height=720 ! nvoverlaysink sync=0 nvarguscamerasrc ! ‘video/x-raw(memory:NVMM), format=NV12, width=1280, height=720, framerate=60/1’ ! comp.

2

Hi,
It is not supported.
Please check user guide https://developer.nvidia.com/embedded/dlc/l4t-accelerated-gstreamer-guide-32-1

e nvcompositor supports video decode (gst-omx) with the overlay
render pipeline for gst-1.14.
3

Hi Dane,

So nvcompositor only supports decoded streams?
is it possible to support the video stream from the camera in the future?
or can you provide source code for me to implement?
Thanks!

4

Hi,
nvcompositor plugin is implemented with tegra_multimedia_api. You may refer to NvBufferComposite() defined in nvbuf_utils.h.

5

Hi,

I found that using videotestsrc is working, i think nvcompositor and nvarguscamerasrc should just be somewhere incompatible.

my gstreamer command :

gst-launch-1.0 nvcompositor name=comp sink_0::xpos=0 sink_0::ypos=0 sink_0::width=1920 sink_0::height=1080 ! autovideoconvert ! nvoverlaysink sync=0 videotestsrc ! comp.

Can you try to find out the problem?
or can provide the source code of the nvcompositor to me?
i found an composite example in mmapi, I should be able to try to modify it to be compatible with nvarguscamerasrc

Thanks!

6

Hi,

or can provide the source code of the nvcompositor to me?

The source code is not open to public.