在imx8mm上使用uvc camera跑v4l2官方的sample没有问题,但是使用ov5640的camera就跑不通,会报select timeout的错误。 https://linuxtv.org/downloads/v4l-dvb-apis-new/userspace-api/v4l/capture.c.html v4l2-ctl --all Driver Info: Driver name : mx6s-csiCard type : i.MX6S_CSIBus info : platform:...
v4l2-ctl -d /dev/video0 --set-fmt-video=width=320,height=240,pixelformat=RGB565_2X8_BE --stream-mmap=3 --stream-skip=3 --stream-to=./cif.out --stream-count=1 --stream-poll 使用当前设置抓取图像数据: v4l2-ctl -d /dev/video0 --stream-mmap=3 --stream-skip=3 --stream-to=./ci...
_usec = 0; r = select(fd + 1, &fds, NULL, NULL, &tv); if (-1 == r) { if (EINTR == errno) continue; errno_exit("select"); } if (0 == r) { fprintf(stderr, "select timeout\\n"); exit(EXIT_FAILURE); } if (read_frame()) break; /* EAGAIN - continue select ...
、、、 VIDIOC_QUERYMENU: Invalid argumentselect timeoutHIGHGUI ERROR: V4L: Property <unknown property string>(2) not supported by device HIGHGUI ERROR: V4L2 浏览0提问于2012-01-01得票数 4 2回答 Android内核编译 、、 编译Android内核的步骤如下:$ export SUBARCH=arm$ cd omap$ make tuna_defconfig...
在安装好xawtv 应用后,使用该应用程序打开已接入PC的USB摄像头,出现错误: v4l2:oops:select timeout,且界面显示的图像卡顿,如下图所示: 终端显示状态如下: v4l2:oops:select timeout v4l2:oops:select timeout v4l2:oops:select timeout 解决办法: 修改虚拟机设置,将U... ...
fprintf(stderr,"select timeout\n"); exit(EXIT_FAILURE); }if(read_frame())break;/*EAGAIN - continue select loop.*/} } }/** one operation * step1 : VIDIOC_STREAMOFF*/staticvoidstop_capturing(void) {enumv4l2_buf_type type;switch(io) {caseIO_METHOD_READ:/*Nothing to do....
sudo howdy add Adding face model for the user aplennevaux Enter a label for this new model [Initial model] (max 24 characters): test select timeout VIDIOC_DQBUF: Resource temporarily unavailable Please look straight into the camera VIDIOC_QBUF: Invalid argument Traceback (most recent call last...
$ v4l2-ctl -d /dev/video3 --list-formats-ext ioctl: VIDIOC_ENUM_FMT Type: Video Capture [0]: 'YUYV' (YUYV 4:2:2) Size: Discrete 1920x1080 Interval: Discrete 0.033s (29.970 fps) Further, if I run ffplay, I get video! $ ffplay -pixel_format yuyv422 /dev/video3 [VIDEO WINDOW...
select input1: v4l2-ctl --device /dev/video3 --set-input=1 pixel formats, framesizes, and framerates¶ You can usev4l2-ctlto show what pixel formats a video device supports and select a desired format. Note that v4l2 devices support one or more pixel formats, and various resolutions an...
据我所知，您正在从相机请求一个YUYV格式的FullHD (1920x1080)缓冲区。你没有提到相机的类型/型号/...