Difference between revisions of "Video stream"

The following instructions assume that the user is connected over SSH or use a terminal in a remote desktop.

Enable IMX219 camera over the microcoax cable

In current release, the IMX219 camera over microcoax is enabled by default and available as /dev/video0. It does not required to enable the overlay as described below.

1. List of available overlays for your board can be listed using:

   sudo /opt/nvidia/jetson-io/config-by-hardware.py -l

   It should return:

   Header 1 [default]: Jetson Nano CSI Connector
     Available hardware modules:
     1. IMX219 Microcoax Connector

2. Enable the camera:

   sudo /opt/nvidia/jetson-io/config-by-hardware.py -n "IMX219 Microcoax Connector"

3. Reboot:

   reboot

4. After reboot and login again, look if IMX219 device was detected:

   dmesg | grep imx219

User who would like more of a guided way to enable the camera could use: sudo /opt/nvidia/jetson-io/jetson-io.py

Gstreamer pipeline

See https://docs.nvidia.com/jetson/l4t/index.html#page/Tegra%20Linux%20Driver%20Package%20Development%20Guide/accelerated_gstreamer.html#wwpID0E0KR0HA for example GStreamer pipelines that can be used on the Jetson.

To send a RTP stream over the network from the Jetson:

$ gst-launch-1.0 nvarguscamerasrc ! 'video/x-raw(memory:NVMM), format=NV12, width=1920, height=1080' ! nvv4l2h264enc insert-sps-pps=true ! h264parse ! rtph264pay pt=96 ! udpsink host=<<<DEST IP>>> port=8001 sync=false -e

Here, replace <<<DEST IP>>> with the IP of the computer where you want to send the video stream to.

To choose a specific camera, use the sensor-id property of nvarguscamerasrc. To view all available properties:

$ gst-inspect-1.0 nvarguscamerasrc

This can of course be applied to any GStreamer element.

Host running Ubuntu 20.04 LTS

To receive the stream (created using the pipeline given above on the Jetson):

$ gst-launch-1.0 udpsrc port=8001 caps='application/x-rtp, encoding-name=(string)H264, payload=(int)96' ! rtph264depay ! queue ! h264parse ! avdec_h264 ! autovideosink -e

This will open a video window showing the stream.