Video-viewer: failed to create output stream

[dusty_nv]

@pujol

If I am on my laptop, connect my Jetson to it via USB and use cmd or Power Shell to go inside the docker we installed in the tutorial and first run

video-viewer --output-codec=h264 /dev/video0 rtp://192.168.1.54:1234

Everything seems to work until it says:

[OpenGL] failed to open X11 server connection.
[OpenGL] failed to create X11 Window

and then starts capturing frames as if everything is fine but I cannot see any of those.

This is fine, this is the command you should run on your Jetson to send the RTP feed to your laptop. The OpenGL error is expected because you don’t have a display attached to your Nano. You won’t see any video frames until you start a viewer on your laptop.

@pujol

Then if I run

video-viewer --input-codec=h264 rtp://@:1234

It has even more errors:

You don’t want to run this command on your Jetson, this is the command you would run if you wanted to receive an RTP stream on your Jetson. Instead you want to transmit an RTP stream from your Jetson, so you should run the first command on your Jetson.

@pujol

Finally if I run GStreamer using

gst-launch-1.0 -v udpsrc port=1234 \
 caps = "application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, payload=(int)96" ! \
 rtph264depay ! decodebin ! videoconvert ! autovideosink

it seems to run but nothing happens…

You should run this on your laptop, not your Jetson. This is the GStreamer command that receives and displays the RTP stream. You can install GStreamer to your laptop or use VNC player (GStreamer is more reliable and I prefer that way)

This is the section for what to run on your laptop side: https://github.com/dusty-nv/jetson-inference/blob/master/docs/aux-streaming.md#viewing-rtp-remotely