camera frame rate on imx8qm mek with ov5640 camera sensor

[yibhan]

Hi guys,

I have problems about camera performance in imx8qmmek with demo image and with 0v5640 camera sensor and they are all from imx8qmmek evaluation board.

and I have used /unit_test/mx8_v4l2_cap_drm.out with below command:

1. ./mx8_v4l2_cap_drm.out -cam 1 -fmt YUYV -ow 640 -oh 480 -num 300 -p

2. ./mx8_v4l2_cap_drm.out -cam 1 -fmt YUYV -ow 1280 -oh 720 -num 300 -p

3. ./mx8_v4l2_cap_drm.out -cam 1 -fmt YUYV -ow 1920 -oh 1080 -num 300 -p

I expected all each of frame rate is almost 30fps, but acutally.

in case of 640x480, the result is 27fps,

in case of 1080x720 or 1920x1080, the result is 23~25fps.

Why the actual framerate is slower than expected framerate from the nxp document?

Is there any points to enhance the camera framerate?

Please share some of information...

[Bio_TICFSL]

Hello yibhan,

The numbers comes to a camera connected to MIPI, and the latest BSP L5.4..47.

Regards

[yibhan]

Hi Bio_TICFSL,

I am using 4.14.98.2.0.0 and I thought ov5640 is reference camera sensor for checking camera performance in bsp.

[yibhan]

Hi Bio_TICFSL,

I am using camera module is MINISASTOCSI is nxp's camera module.

[Bio_TICFSL]

Hello,

One can test with nxp version of gstreamer plugins : imx-gst1.0-plugin using

sect.7.3.15 Video conversion on the Linux Guide.

Make sure that you are working with the latest BSP.

it can be posted on gstreamer-imx github page :
https://github.com/Freescale/gstreamer-imx/issues

Regards

[yibhan]

Hi BioTICFSL,

1. Do you recommend not to use /mx8_v4l2_cap_drm.out but gstreamer?

If then, give me the reason which you refer to use gstreamer?

2. Tell me the exact version of the lastest BSP?  by the way, i am using 4.14.98-2.0.0 BSP version.

[yibhan]

Hi BioTCIFSL,

I have something to tell you. A wierd thing is 800x600 frame rate is almost 29 ~ 30 fps.

Do you have any idea about 800x600?