videoio 第2页

opencv 4.5.5 GStreamer warning: Error pushing buffer to GStreamer pipel

buildinformation：缺少gstreamer》》重新编译，编译参数中增加：-DWITH_GSTREAMER=ON；https://docs.opencv.org/4.5.5/d0/da7/videoio_overview.html

形为心役·2022-12-17 00:14

writeFrame OpenCV | GStreamer warning: Error pushing buffer to GStreamer pipeline

[WARN:4]global/usr/src/debug/opencv/4.4.0-r0/git/modules/videoio/src/cap_gstreamer.cpp(1665)writeFrameOpenCV

人工智能和FPGA AI技术·2022-12-15 09:10

opencv打开摄像头失败的一种可能cv2.error: Unknown C++ exception from OpenCV code

尝试打开本地摄像头时一闪而过这样的画面随后看到这样的错误信息：[WARN:0]globalC:\Users\runneradmin\AppData\Local\Temp\pip-req-build-q3d_8t8e\opencv\modules\videoio

zzztryy·2022-12-10 20:47

【opencv450-samples】漫水填充

demo运行效果源码：#include"opencv2/imgproc.hpp"#include"opencv2/imgcodecs.hpp"#include"opencv2/videoio.hpp"#

十年一梦实验室·2022-12-10 07:06

ubuntu编译dense-flow报错

2.make[2]:***[modules/videoio/CMakeFiles/opencv_videoio.dir/build.make:250：lib/libopencv_videoio.so.4.5.2

理解&&记忆·2022-12-09 17:12

OpenCV包含的模块以及组成结构

html模块说明core该模块包含OpenCV库的基础结构以及基本操作Improc图像处理模块包含基本的图像转换，包括滤波以及类似的卷积操作Highgui在OpenCV3.0中，分割为imcodecs、videoio

李墨菲·2022-12-09 16:30

Linux 下交叉编译opencv4.5.5 android JNI基于 FFMPEG 的 VideoIO模块

androidopencv4.5.5forFFmepg库Prepare:编译ffmpeg编译opencv更改opencv-4.5.5目录下的CMakeLists.txt修改opencv-4.5.5/modules/videoio

菜菜的院子·2022-12-08 16:39

关于VS输出[ INFO:0] global C:\build\master_winpack-build-win64-vc15\opencv\modules\videoio\src\....

Opencv4.5的contrib包之后，调试窗口自动输出一堆日志：[INFO:0]globalC:\build\master_winpack-build-win64-vc15\opencv\modules\videoio

程序媛说事er·2022-12-05 00:44

Python下使用opencv调用摄像头出错

报错情况：[WARN:0]globalD:\Build\OpenCV\opencv-4.4.0\modules\videoio\src\cap_msmf.cpp(373)`anonymous-namespace

jayli517·2022-11-25 22:33

OpenCV3学习笔记-人脸识别

objectDetection/objectDetection.cppobjectDetection.cpp内容如下：#include"opencv2/objdetect.hpp"#include"opencv2/videoio.hpp

penn-yin·2022-11-24 18:07

基于OpenCV的人脸识别

基于OpenCV的人脸识别1.模块:（1）Core：包含OpenCV库的基础结构（2）Improe：图像处理，包含滤波和卷积操作（3）Highgui：OpenCV3.0中可分割为imcodecs、videoio

ming_chen_jing·2022-11-23 21:35

解决opencv-python报错：warning: Error opening file (...modules/videoio/src/cap_ffmpeg_impl.hpp:834)

原因拉流地址有误解决确认拉流地址是否有误将地址用引号包围，若地址中符号较多缺没有被引号包围，同样会报错

FarryNiu·2022-11-20 07:46

【2020.7.20】[ WARN:0] global C:\projects\opencv-python\opencv\modules\videoio\src\cap_ms

capture=cv2.VideoCapture(0)出现警告：[WARN:0]globalC:\projects\opencv-python\opencv\modules\videoio\src\cap_msmf.cpp

AHalfCat·2022-11-20 07:16

opencv 编译安装时出现报错 modules/videoio/src/cap_ffmpeg_impl.hpp:585:34: error: ‘AVStream {aka struct AVStre

目录1.报错2.报错原因3.卸载当前ffmpeg3.1.卸载apt安装的ffmpeg3.2.卸载编译安装的ffmpeg4.编译安装ffmpeg4.34.1.下载安装包4.2.安装依赖4.3.编译安装4.4.测试ffmpeg5.编译安装opencv4.1.1在jetsonnano上尝试用python调用.so文件，但是报错，报错信息显示是opencv出现问题，遂决定重装opencv。先是编译open

wangxinRS·2022-11-20 07:14

opencv摄像头 vmware虚拟机无法打开摄像头的解决方法

[WARN:0]global/io/opencv/modules/videoio/src/cap_v4l.cpp(887)openVIDEOIO(V4L2:/dev/video0):can'topencamerabyindexCannotopencamera

pq不会飞·2022-11-20 07:42

[ERROR:0] global /build/opencv/modules/videoio/src/cap_ffmpeg_impl.hpp (2791) open VIDEOIO/FFMPEG: F

用模型处理视频时，遇到如下报错，不支持x264编码：[ERROR:0]global/build/opencv/modules/videoio/src/cap_ffmpeg_impl.hpp(2791)openVIDEOIO

Anastasia_li·2022-11-20 07:33

opencv-python调用摄像头失败 global /io/opencv/modules/videoio/src/cap_v4l.cpp (1000) tryIoctl VIDEOIO(V4L2

环境Ubuntu18.04aarch64Python3.7.15opencv-python4.6.0问题现象插入USB摄像头后，/dev/video0会正常出现，使用fswebcam也能正常拍摄照片。但运行opencv-python的视频拍摄例程时出错，例程如下：importnumpyasnpimportcv2ascvcap=cv.VideoCapture(0)ifnotcap.isOpened(

__XWH1999__·2022-11-20 07:33

Java 基于 OpenCV4.4 - 视频流处理教程 (六)

一、处理视频流Java版本的OpenCV提供了一个videoio包，以及一个特定的VideoCapture对象，它提供了多种方法来直接从连接的视频设备中读取矩阵对象。

笨笨熊咦·2022-11-20 00:26

OpenCV Java 示例 - 检测摄像头中的人脸

*;importorg.opencv.highgui.HighGui;importorg.opencv.objdetect.CascadeClassifier;importorg.opencv.videoio.VideoCapture

allway2·2022-11-19 16:52

opencv java 人脸识别算法_work_33_Java + opencv实现摄像头人脸数获取、图片人脸识别、视频人脸识别、摄像头实时人脸识别...

importorg.opencv.imgcodecs.Imgcodecs;importorg.opencv.imgproc.Imgproc;importorg.opencv.objdetect.CascadeClassifier;importorg.opencv.videoio.Vid

weixin_39836860·2022-11-19 16:09

VideoCapture读取视频失败解决方案

VideoCapture().open()返回false解决方案解决方法：将opencv安装目录D:\opencv\build\x64\vc14\bin中的opencv_videoio_ffmpeg451

Wi~·2022-11-18 17:23

【opencv 450 samples】背景分割

文件中的许可条款的约束#include"opencv2/core.hpp"#include"opencv2/imgproc.hpp"#include"opencv2/video.hpp"#include"opencv2/videoio.hpp

十年一梦实验室·2022-10-07 07:28

3-单目相机标定

include"opencv2/imgproc.hpp"#include"opencv2/calib3d.hpp"#include"opencv2/imgcodecs.hpp"#include"opencv2/videoio.hpp

机器人图像处理·2022-06-20 14:25

Opencv二维码定位+梯形修正

include"opencv2/objdetect.hpp"#include"opencv2/imgproc.hpp"#include"opencv2/highgui.hpp"#include"opencv2/videoio

[email protected]·2022-05-30 18:41

【深度学习计算机视觉实战】无人驾驶中的车道线检测

快速入门；第2章图像读写模块imgcodecs；第3章核心库模块core；第4章图像处理模块imgproc（一）；第5章图像处理模块imgproc（二）；第6章可视化模块highgui；第7章视频处理模块videoio

计算机视觉与OpenCV·2022-03-28 07:49

图像处理: OpenCV编程详解(C++) 【持续更新中】

找到C:\opencv\build\x64\vc15\bin文件夹，将其中的opencv_videoio_ffmpeg450_64.dllopencv

夜若渊·2022-02-28 17:32

在树莓派3B上编译安装OpenCV3.4.1

参考：https://www.alatortsev.com/2018/04/27/installing-opencv-on-raspberry-pi-3-b/一步一步照着来准没错否则可能出现videoio.h

phoenixmy·2022-02-05 15:15

cmake解决opencv编译下载失败的方法

cmake解决opencv编译下载失败的方法一、ippicv_2020_win_intel64_20191018_general.zip下载失败二、opencv_videoio_ffmpeg_64.dll

~搬~运~工~·2021-11-06 23:12

Opencv读取视频或调用摄像头

一、Opencv读取视频注意：需要用到这两个库，使用时记得添加-lopencv_video-lopencv_videoio#include#includeusingnamespacecv;usingnamespacestd

超级无敌陈大佬的跟班·2021-04-28 15:29

Jetson Xavier AGX open OpenCV | GStreamer warning: Cannot query video position: status=0, value=-1,

JetsonXavierAGX[WARN:0]global/home/lijinzhe/opencv/opencv-4.1.1/modules/videoio/src/cap_gstreamer.cpp

Black__Jacket·2021-02-14 09:21

Java利用opencv实现用字符展示视频或图片的方法

代码如下：packageorg.fxd.utils;importorg.opencv.core.Mat;importorg.opencv.imgproc.Imgproc;importorg.opencv.videoio.VideoCapture

·2020-12-31 13:28

Cmake opencv_videoio_ffmpeg.dll下载失败

用Cmake对OpenCV进行Configure，下载opencv_videoio_ffmpeg.dll和opencv_videoio_ffmpeg_64.dll经常失败，解决方案是：到CMake中设置的

磁悬浮青蛙呱呱呱·2020-09-13 22:17

【OpenCV】视频/图像背景减除方法

include"opencv2/imgcodecs.hpp"#include"opencv2/imgproc.hpp"#include"opencv2/highgui.hpp"#include"opencv2/videoio.hpp

笔尖bj·2020-09-13 16:11

Opencv 自带提取前景（背景建模）

读入视频（图片序列）->bei//opencv#include"opencv2/imgcodecs.hpp"#include"opencv2/imgproc.hpp"#include"opencv2/videoio.hpp

不要做程序员的小松鼠·2020-09-13 14:49

视频关键帧提取，JAVA版

importorg.opencv.videoio.

学为好人·2020-09-11 11:40

openCV 视频　cvLogPolar　对数极坐标变换

include"opencv2/core.hpp"#include"opencv2/highgui.hpp"#include"opencv2/imgproc.hpp"#include"opencv2/videoio.hpp

SongYuLong的博客·2020-09-10 18:27

对‘cv::VideoCapture::VideoCapture()’未定义的引用

添加opencv_videoio库，打开caffe/cmake/Dependencies.cmake大约72行，改为find_package(OpenCVQUIETCOMPONENTScorehighguiimgprocimgcodecsvideoio

sinat_21190681·2020-08-24 02:04

opencv读取本地视频

include"opencv2/core.hpp"#include"opencv2/highgui.hpp"#include"opencv2/imgproc.hpp"#include"opencv2/videoio.hpp"usingnamespacestd

EmbededCoder·2020-08-22 23:03

解决cv2短时间内连续打开电脑前置摄像头报错问题

来开启摄像头，10s之后关闭摄像头，但是cv2.release()之后摄像头依然开启，并未释放（通过观察电脑上面摄像头旁边的指示灯可以知道），然后再次启动摄像头的话会有警告，警告提示如下：[WARN:0]videoio

古痴今狂·2020-08-22 13:49

OpenCV代码提取：Windows上通过DShow获取Camera视频

在OpenCV3.1中获取视频的模块在videoio(videoinputandoutputmodule)中，调用VideoCapture类接口，除了videoio模块外还依赖core、highgui、

fengbingchun·2020-08-18 19:54

opencv录像在ARM Ubuntu 16.04运行报错

OpenCV(4.2.0-dev)~/opencv/modules/videoio/src/cap_images.cpp:253:error:(-5:Badargument)CAP_IMAGES:can

salamiGeek·2020-08-18 06:58

Ubuntu：linux找不到动态链接库 .so文件的解决方法

方法首先可以用ldd命令来查询当前程序的依赖情况，例如lddlibopencv_videoio_so.3.4假如发现libopencv_c

yanqs_whu·2020-08-17 09:53

opencv3.2编译报错icv_add_video_stream_FFMPEG

guo_lei_lamant/article/details/81568346opencv3.2编译报错：[51%]Builttargetopencv_photo[51%]BuildingCXXobjectmodules/videoio

ykwjt·2020-08-16 04:38

opencv运行出现错误ffmpeg

调试opencv程序，运行时出现：Erroropeningfile/build/opencv/modules/videoio/src/cap_ffmpeg_impl.hpp:578网络查询，原因：程序中

主动安全·2020-08-14 19:33

ubuntu（linux）下安装openCV（ffmpeg导致的编译不通过的解决办法）

1.opencv-3.1.0/modules/videoio/src/cap_ffmpeg_impl.hpp:1313:21:error:‘CODEC_FLAG_GLOBAL_HEADER’wasnotdeclaredinthisscopec

goodxin_ie·2020-08-14 17:30

opencv3.2安装成功，但使用VideoCapture时出现链接错误

opencv3.2已经在Ubuntu14.04安装成功了；使用VideoCapture时出现链接出错//usr/local/lib/libopencv_videoio.so:undefinedreferenceto

Dwyane05·2020-08-14 17:14

macOS opencv调用摄像头出错[AVCaptureDevice authorizationStatusForMediaType:]

AVCaptureDeviceauthorizationStatusForMediaType:]:unrecognizedselectorsenttoclass0x7fff9dd426a0[ERROR:0]VIDEOIO

xx润物细无声·2020-08-13 23:19

openCV 显示图片