gscam problem with no video shown, even not shown in rqt-image window, not even gst-launch on host machine

[vxgu86]

gscam problem with no video shown, even not shown in rqt-image window, not even gst-launch on host machine

[mtbsteve]

It seems that gscam udp streaming has an issue under Ubuntu 18.04/ROS melodic.
I resolved it in the following way by installing a ros rtsp streamer like https://github.com/CircusMonkey/ros_rtsp
In the ros_rtsp/config/stream_setup.yaml file you can either configure a zed camera node like:

stream-zed_camera:
    type: topic
    source: /zed/zed_node/left/image_rect_color
    mountpoint: /zedimage
    caps: video/x-raw,framerate=10/1,width=640,height=480
    bitrate: 150

or a gestreamer generic camera device like:

stream-camera:
    type: cam
    source: "v4l2src device=/dev/video0 ! video/x-raw,framerate=30/1,width=2560,height=720 ! omxh264enc ! rtph264pay"
    mountpoint: /camera
    bitrate: 150

In QGC, Mission Planner etc you can then directly stream the feed by enabling the RTSP option.