imx8 wayland qt qml can not use yuv camera

[songhongliang]

HI，

I want to use QT's QCamera or QML to get the video display, but it is currently not successful.

I use           gst-launch-1.0 imxcompositor_g2d v4l2src device=/dev/video8!'Video/x-raw,format=RGB16,framerate=25/1,width=1280,height=720'! Autovideosink     is ok,

but I am more I want to use QCmaera or QML directly.

In the test, the usb camera can be directly called with QCmera or QML。

thanks

[joanxie]

what imx8 board do you mean?

[songhongliang]

HI joanxie

it is imx8qm board，

I usb QT QCamera or qml  can not use ISI registered  /dev/videox,

but the uvc video is ok。

you can look this，I think they should be the same problem

ommunity.nxp.com/t5/i-MX-Processors-Knowledge-Base/i-MX-8-8X-Family-DDR-Tools-Release/ta-p/1121519

[joanxie]

yes it seems ths exit issue of qt camera on imx8qm or imx8qxp, because the DPU DC overlay plane can support tile format. if you use gstreamer, you need to use g2d convert tile to linear, so the expert team suggst customer to use gstreamer which is supported by them, qt multimedia isn't

[songhongliang]

HI 

I need to display 3 camera images in qt, but it is not very smooth at the moment, is there a routine for using gst to call multiple cameras in qt

Thanks

[songhongliang]

HI,

I look forward to supporting qtmultimedia in the future, so development and use will be very convenient.

thanks