two camera preview at the same time on i.mx8m

richard_hu — Tue, 17 Jul 2018 09:19:39 GMT

Hello, Sir:

Our board have two MIPI-CSI2 interfaces and I can have two camera preview separately (not the same time).

I'm trying to enable two camera preview simultaneously on HDMI on i.mx8m.

I use gstreamer to output to waylandsink or kmssink but can't get it work.

The software is Yocto rocko (linux 4.9.88 BSP).

I refer to

https://medium.com/@petehouston/play-two-webcams-in-mjpg-format-simultaneously-using-gstreamer-2302ca91504

to give instruction:

gst-launch-1.0 tee name=splitter \
v4l2src io-mode=2 device=/dev/video0 \
! video/x-raw,width=640, height=480 \
! waylandsink splitter. v4l2src io-mode=2 device=/dev/video1 \
! video/x-raw,width=640, height=480 \
! waylandsink splitter.

refer to

https://www.raspberrypi.org/forums/viewtopic.php?f=43&t=207953&p=1287530#p1288133

to give instruction:

gst-launch-1.0 -vv \
v4l2src io-mode=2 device=/dev/video0 ! \
videobox autocrop=true border-alpha=0 top=-70 bottom=-70 right=-220 ! \
videomixer name=mix ! \
video/x-raw,width=640, height=480 ! \
waylandsink \
v4l2src io-mode=2 device=/dev/video1 ! \
videobox autocrop=true border-alpha=0 top=-70 bottom=-70 left=-220 ! \
mix.

Is there any way to preview two MIPI-CSI2 camera at the same time?

Thank you~!

BR,

Richard

Re: two camera preview at the same time on i.mx8m

Rita_Wang — Sun, 30 Sep 2018 11:33:41 GMT

I am confirmed it for you, when I get update I will give reply to you as soon as possible.

topic two camera preview at the same time on i.mx8m in i.MX Processors

two camera preview at the same time on i.mx8m

Re: two camera preview at the same time on i.mx8m