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The time of taking a picture is too long when using a uvc camera

Question asked by 国伟 费 on May 3, 2017
Latest reply on May 3, 2017 by 国伟 费

I'm using a 5M usb camera on imx6q based on android4.4, amazing it totally cost about 5~6s to take a picture, and

i found it cost 4s to get a frame from kernel space? Why so long?