【发布时间】：2021-03-23 02:21:00
【问题描述】：
我正在尝试使用 VideoCapture 加载 C++ 中的视频（我使用的是 windows）...
视频名称为“A.avi”，路径为“C:\Users\anton\Desktop\eyeVideos”
在网上搜索发现路径应该是这样插入的：C:/Users/anton/Desktop/eyeVideos/
我使用的是我在网上找到的代码：
VideoCapture capture("C:/Users/anton/Desktop/eyeVideos/A.avi");
if(!capture.isOpened()){
std::`cout<<"cannot read video!\n";`
return -1;
}
问题是使用断点代码总是在此时停止cout<<"cannot read video!\n";
我在 stackoverflow 上发现了一个类似的问题，但我不明白解决方案（抱歉，我是超级初学者）
提前致谢
这是getBuildInformation()的输出；
General configuration for OpenCV 2.4.13.7 =====================================
Version control: unknown
Platform:
Timestamp: 2020-12-10T20:59:23Z
Host: Windows 10.0.19041 AMD64
CMake: 3.18.4
CMake generator: Ninja
CMake build tool: C:/DEV/vcpkg-master/downloads/tools/ninja/1.10.1-windows/ninja.exe
MSVC: 1916
Configuration: Debug
C/C++:
Built as dynamic libs?: YES
C++ Compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx64/x64/cl.exe (ver 19.16.27044.0)
C++ flags (Release): /nologo /DWIN32 /D_WINDOWS /W4 /utf-8 /GR /EHs /MP /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /wd4251 /wd4275 /wd4589 /wd4359 /MP4 /MD /O2 /Oi /Gy /DNDEBUG /Z7
C++ flags (Debug): /nologo /DWIN32 /D_WINDOWS /W4 /utf-8 /GR /EHs /MP /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /wd4251 /wd4275 /wd4589 /wd4359 /MP4 /D_DEBUG /MDd /Z7 /Ob0 /Od /RTC1
C Compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx64/x64/cl.exe
C flags (Release): /nologo /DWIN32 /D_WINDOWS /W3 /utf-8 /MP /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /MP4 /MD /O2 /Oi /Gy /DNDEBUG /Z7
C flags (Debug): /nologo /DWIN32 /D_WINDOWS /W3 /utf-8 /MP /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /MP4 /D_DEBUG /MDd /Z7 /Ob0 /Od /RTC1
Linker flags (Release): /machine:x64 /nologo /DEBUG /INCREMENTAL:NO /OPT:REF /OPT:ICF /debug
Linker flags (Debug): /machine:x64 /nologo /debug /INCREMENTAL
ccache: NO
Precompiled headers: NO
OpenCV modules:
To be built: core flann imgproc highgui features2d calib3d ml video legacy objdetect photo gpu ocl nonfree contrib stitching superres ts videostab
Disabled: world
Disabled by dependency: -
Unavailable: androidcamera dynamicuda java python viz
Windows RT support: NO
GUI:
QT: NO
Win32 UI: YES
OpenGL support: YES (opengl32 glu32)
VTK support: NO
Media I/O:
ZLib: optimized C:/DEV/vcpkg-master/installed/x64-windows/lib/zlib.lib debug C:/DEV/vcpkg-master/installed/x64-windows/debug/lib/zlibd.lib (ver 1.2.11)
JPEG: optimized C:/DEV/vcpkg-master/installed/x64-windows/lib/jpeg.lib debug C:/DEV/vcpkg-master/installed/x64-windows/debug/lib/jpegd.lib (ver )
PNG: optimized C:/DEV/vcpkg-master/installed/x64-windows/lib/libpng16.lib debug C:/DEV/vcpkg-master/installed/x64-windows/debug/lib/libpng16d.lib (ver 1.6.37)
TIFF: optimized C:/DEV/vcpkg-master/installed/x64-windows/lib/tiff.lib debug C:/DEV/vcpkg-master/installed/x64-windows/debug/lib/tiffd.lib optimized C:/DEV/vcpkg-master/installed/x64-windows/lib/lzma.lib debug C:/DEV/vcpkg-master/installed/x64-windows/debug/lib/lzmad.lib optimized C:/DEV/vcpkg-master/installed/x64-windows/lib/jpeg.lib debug C:/DEV/vcpkg-master/installed/x64-windows/debug/lib/jpegd.lib optimized C:/DEV/vcpkg-master/installed/x64-windows/lib/zlib.lib debug C:/DEV/vcpkg-master/installed/x64-windows/debug/lib/zlibd.lib (ver 42 - 4.1.0)
JPEG 2000: NO
OpenEXR: NO
Video I/O:
Video for Windows: YES
DC1394 1.x: NO
DC1394 2.x: NO
FFMPEG: NO
avcodec: NO
avformat: NO
avutil: NO
swscale: NO
avresample: NO
OpenNI: NO
OpenNI PrimeSensor Modules: NO
PvAPI: NO
GigEVisionSDK: NO
DirectShow: YES
Media Foundation: YES
XIMEA: NO
Intel PerC: NO
Other third-party libraries:
Use IPP: NO
Use Eigen: YES (ver 3.3.7)
Use TBB: NO
Use OpenMP: NO
Use GCD NO
Use Concurrency YES
Use C=: NO
Use Cuda: NO
Use OpenCL: YES
OpenCL:
Version: dynamic
Include path: C:/DEV/vcpkg-master/buildtrees/opencv2/src/2.4.13.7-64eb3208d2.clean/3rdparty/include/opencl/1.2
Use AMD FFT: NO
Use AMD BLAS: NO
Python:
Interpreter: NO
Java:
ant: NO
JNI: NO
Java tests: NO
Tests and samples:
Tests: NO
Performance tests: NO
C/C++ Examples: NO
Install path: C:/DEV/vcpkg-master/packages/opencv2_x64-windows/debug
cvconfig.h is in: C:/DEV/vcpkg-master/buildtrees/opencv2/x64-windows-dbg
-----------------------------------------------------------------
`
【问题讨论】：
-
试试
"C:\\Users\\anton\\Desktop\\eyeVideos\\A.avi"。说cout << cv::getBuildInformation();并报告输出（视频I/O 部分最重要）。使用 ffmpeg 或其他合适的工具来确定 .avi 文件中使用的编解码器 (ffprobe A.avi) -
你好，它仍然无法运行 unsing ''C:\\Users\\anton\\Desktop\\eyeVideos\\A.avi"。getBuildInformation() 的输出在post..我该如何使用ffmpeg？
标签： c++ opencv video video-capture