3.5. Displaying the image#

Attention

This setting must be done at the receiver (host computer) side.

In this document, we use GStreamer to output the image. However, you should be able to use any application that can receive RTP packets (RFC 4175).

3.5.1. Preparation#

Please install GStreamer if it is not installed yet. To install the GStreamer, please follow GStreamer’s official instructions.

Note

By default, the cameras (C1/C2) will work with free-run mode. To switch the frame-synchronization mode, please refer to Camera triggering.

See also

Please refer to the C1’s frame-synchronization mode and C2’s frame-synchronization mode for the details.

3.5.2. Displaying 1 camera#

To display the image from the C1 camera that is assigned to port 5008, please use the GStreamer command below.

gst-launch-1.0 udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)1920, height=(string)1280' port=5008 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true sync=false

To display the image from the C2 camera that is assigned to port 5004, please use the GStreamer command below.

gst-launch-1.0 udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)2880, height=(string)1860' port=5004 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true sync=false

3.5.3. Displaying 4 cameras#

To display the image from the four cameras, please use the GStreamer command below.

  • C1 camera, port 5004 - 5007

gst-launch-1.0 \
udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)1920, height=(string)1280' port=5004 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true sync=false \
udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)1920, height=(string)1280' port=5005 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true sync=false \
udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)1920, height=(string)1280' port=5006 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true sync=false \
udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)1920, height=(string)1280' port=5007 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true sync=false

  • C1 camera, port 5008 - 5011

gst-launch-1.0 \
udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)1920, height=(string)1280' port=5008 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true sync=false \
udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)1920, height=(string)1280' port=5009 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true sync=false \
udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)1920, height=(string)1280' port=5010 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true sync=false \
udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)1920, height=(string)1280' port=5011 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true sync=false

  • C2 camera port 5004 - 5007

gst-launch-1.0 \
udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)2880, height=(string)1860' port=5004 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true sync=false \
udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)2880, height=(string)1860' port=5005 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true sync=false \
udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)2880, height=(string)1860' port=5006 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true sync=false \
udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)2880, height=(string)1860' port=5007 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true

Note

Up to v7 image, only 10fps mode is supported for C2 camera. Other frame rate is not supported yet.

3.5.4. Displaying 8 cameras#

To display the camera from eight cameras, please use the GStreamer command below.

Note

Driving x8 C1 cameras with free-run mode (e.g., 30fps) may cause image corruption. To display the image from x8 C1 cameras, please set the cameras to the frame-synchronization mode (refer to Camera triggering for the details) and set the lower frame sync frequency. Refer to the caution in the camera triggering section for the details

gst-launch-1.0 \
udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)1920, height=(string)1280' port=5004 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true sync=false \
udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)1920, height=(string)1280' port=5005 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true sync=false \
udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)1920, height=(string)1280' port=5006 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true sync=false \
udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)1920, height=(string)1280' port=5007 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true sync=false \
udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)1920, height=(string)1280' port=5008 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true sync=false \
udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)1920, height=(string)1280' port=5009 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true sync=false \
udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)1920, height=(string)1280' port=5010 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true sync=false \
udpsrc caps='application/x-rtp, sampling=YCbCr-4:2:2, depth=(string)8, width=(string)1920, height=(string)1280' port=5011 ! rtpvrawdepay ! videoconvert ! queue ! fpsdisplaysink video-sink=autovideosink text-overlay=true sync=false
../../_images/8cams.gif

Fig. 3.9 Displaying 8camera images at 20fps#