Raspberry Pi 4 is not working when the camera video size is increased.

[iotsystek]

I have done further testing.  In both of the listed configurations below:

1) Both USB 2.0 cameras plugged into a USB 3.0 hub. The USB 3.0 hub plugged
into the RPi4 USB 2.0 port.
2) Both USB 2.0 cameras plugged into a USB 3.0 hub. The USB 3.0 hub plugged
into the RPi4 USB 3.0 port.

I ran the following GStreamer command line at max camera resolution (1280 x
720). I only changed the device=/dev/video(0 or 2) so that each camera could
be tested separately in each configuration. In all test cases the camera
provided real time video without any problems.

gst-launch-1.0 videomixer name=mix ! videoconvert ! autovideosink sync=false
\
 v4l2src device=/dev/video0 ! autovideoconvert ! video/x-raw, format=AYUV,
width=1280, height=720 ! videobox border-alpha=0 top=0    left=0    ! mix.

I do not believe the problem is with the USB port throughput.





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