前情提要安装ubuntu/debian系统想要使用python+opencv 组合进行高效开发按照大佬的心得（tip 老版本的debian才行，新版本的会死机）https://www.ebaina.com/articles/140000016234v4l2-ctl -d /dev/video31 --set-fmt-video=width=1920,height=1080,pixelformat=NV12 --stream-mmap=3 --stream-skip=10 --stream-to=test.yuv --stream-count=1 --stream-poll已经成功获取到yuv图像但是无法拉流！（tip 新版本的debian看似可以拉流第一行数据已经出来，实则死机）运行的是rkmedia_vi_venc_rtsp_test 查看ispserver-log发现老版本debian一开始运行ispserver 还算正常，运行rkmedia_vi_venc_rtsp_test 需要下面这几个依赖，添加进去之后，跟上面的ispserver-logo一样，出现了open device failed（） 拉流失败 于是说！另辟蹊径 apt安装这几个依赖sudo apt install libgroupsock8sudo apt install liblivemedia64 寻找有缘人 帮忙解决拉流问题吧还有，opencv现在如何获取图像呢

尝试 用201板子+ubuntu+python+opencv做一些尝试，发现困难重重现在python+opencv遍历了所有节点cv2.VideoCapture(0) 发现根本没法调用到摄像头dmesg |grep 415 查看设备倒是找到了v4l2-ctl —list-devices(): /dev/v4l-subdev5 rkisp-statistics (platform: rkisp): /dev/video14 /dev/video15 /dev/video16 /dev/video26 /dev/video27 /dev/video28 rkispp_input_params (platform: rkispp): /dev/video35 /dev/video36 /dev/video43 /dev/video44 rkcif (platform:rkcif_mipi_lvds): /dev/video0 /dev/video1 /dev/video2 /dev/video3 /dev/video4 rkisp_mainpath (platform:rkisp-vir0): /dev/video5 /dev/video6 /dev/video7 /dev/video8 /dev/video9 /dev/video10 /dev/video11 /dev/video12 /dev/video13 rkisp_mainpath (platform:rkisp-vir1): /dev/video17 /dev/video18 /dev/video19 /dev/video20 /dev/video21 /dev/video22 /dev/video23 /dev/video24 /dev/video25 rkispp_input_image (platform:rkispp-vir0): /dev/video29 /dev/video30 /dev/video31 /dev/video32 /dev/video33 /dev/video34 rkispp_input_image (platform:rkispp-vir1): /dev/video37 /dev/video38 /dev/video39 /dev/video40 /dev/video41 /dev/video42 也看到了有东西root@aybering:/# sudo fswebcam -d /dev/video0 image.jpg—- Opening /dev/video0…Trying source module v4l2…/dev/video0 opened.No input was specified, using the first.Error selecting input 0VIDIOC_S_INPUT: Inappropriate ioctl for device 尝试调用摄像头，存一张图片失败！有没有大佬玩过，挑战一下啊，存一张图下来。