AnsweredAssumed Answered

frame rate problem of MIPI camera

Question asked by kilsu hong on Jun 8, 2015
Latest reply on Jun 9, 2015 by jimmychan



It's my first time to develop MIPI Camera

I managed to capture images on our platform, including MIPI CSI-2 interface,

but when checking frame rate, it measured about two over three (2/3) compared to original frame rate.

such as,

when frame rate is set to 30 fps, actual frame rate is measured about 20~21 fps.

For exact measurement, any file operation is not run, just only dequeue buffer from IPU.


The below is my command for frame rate measurement,


./mxc_v4l2_capture.out -iw 1280 -ih 720 -ow 1280 -oh 720 -i 1 -m 0 -fr 30


I don't know why the frame rate is matched with ISP.


Do you have any idea to improve frame rate of MIPI-CSI2 camera?


Thank you for your advice in advance.


(I have been developing my device based on BSP 4.1.0, kernel version 3.0.35)