i.MX6DL two pipelines playing for imxvideoconvert_g2d issue

[ganhongxing]

env:

gstreamer-1.8.1

imx-gst1.0-plugin-4.1.1

qt-gstreamer

when playing two pipelines one time,

ex:  v4l2src device=/dev/video0 ! imxvideoconvert_g2d ratiton=0 !  qwidget5videosink

      v4l2src device=/dev/video1 ! imxvideoconvert_g2d ratiton=1 !  qwidget5videosink

two qt widget window

sometimes got errors: g2d_cache_op: fail with status -7g2d_cache_op: fail with status -7g2d_cache_op: fail with status -7g2d_open: fail with status -7

only one window has video.

how can i fix this ?

[1130692457]

can you tell me how to install gstreamer in linux not through ubuntu

[joanxie]

did you install any nxp bsp? like yocto? if yes, the bsp includes gstreamer already. what OS do you want to use?

[1130692457]

i want to uses the waf meta build system build my cross compilation ,But now I don't know how to change the environment variable, or how to compile and port the entire program to imx6.q,As you said, can yocto support gstreamer-imx?Thank you for your reply

[joanxie]

did you play video to different outputu or  to the main window?

is this random error? how long will you get this error when you play the video?