我正在使用openCV在JAVA中处理RTSP视频流。流有地址
rtsp://stream.c-budejovice.cz:1935/cam/Axis240.stream
我可以在Python或VLC播放器中连接到它,所以地址是正确的。但是我的JAVA代码
String rtspUrl = "rtsp://stream.c-budejovice.cz:1935/cam/Axis240.stream";
// Initialize video capture object
VideoCapture videoCapture = new VideoCapture(rtspUrl);
System.out.println(videoCapture.isOpened());
以“False”结尾。我还在“new VideoCapture(rtspUrl)”之后添加了一些睡眠时间,但没有帮助。
问题是打开视频时没有错误信息。 谢谢你
根据@ChristophRackwitz的要求进行编辑
General configuration for OpenCV 4.9.0 =====================================
Version control: v4.9.0-0
Platform:
Timestamp: 2023-12-28T18:50:29Z
Host: Linux 5.15.0-1053-azure x86_64
CMake: 3.28.1
CMake generator: Unix Makefiles
CMake build tool: /usr/bin/make
Configuration: RELEASE
CPU/HW features:
Baseline: SSE SSE2 SSE3
requested: SSE3
Dispatched code generation: SSE4_1 SSE4_2 FP16 AVX AVX2 AVX512_SKX
requested: SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX
SSE4_1 (14 files): + SSSE3 SSE4_1
SSE4_2 (1 files): + SSSE3 SSE4_1 POPCNT SSE4_2
FP16 (0 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX
AVX (8 files): + SSSE3 SSE4_1 POPCNT SSE4_2 AVX
AVX2 (34 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2
AVX512_SKX (5 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2 AVX_512F AVX512_COMMON AVX512_SKX
C/C++:
Built as dynamic libs?: NO
C++ standard: 11
C++ Compiler: /usr/bin/c++ (ver 9.4.0)
C++ flags (Release): -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG -DNDEBUG
C++ flags (Debug): -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -g -O0 -DDEBUG -D_DEBUG
C Compiler: /usr/bin/cc
C flags (Release): -fsigned-char -W -Wall -Wreturn-type -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -O3 -DNDEBUG -DNDEBUG
C flags (Debug): -fsigned-char -W -Wall -Wreturn-type -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -g -O0 -DDEBUG -D_DEBUG
Linker flags (Release): -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a -Wl,--gc-sections -Wl,--as-needed -Wl,--no-undefined
Linker flags (Debug): -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a -Wl,--gc-sections -Wl,--as-needed -Wl,--no-undefined
ccache: NO
Precompiled headers: NO
Extra dependencies: dl m pthread rt
3rdparty dependencies: ittnotify libprotobuf libjpeg-turbo libwebp libpng libtiff libopenjp2 IlmImf zlib ippiw ippicv
OpenCV modules:
To be built: calib3d core dnn features2d flann highgui imgcodecs imgproc java ml objdetect photo stitching video videoio
Disabled: gapi world
Disabled by dependency: -
Unavailable: python2 python3 ts
Applications: -
Documentation: NO
Non-free algorithms: YES
GUI: NONE
GTK+: NO
VTK support: NO
Media I/O:
ZLib: build (ver 1.3)
JPEG: build-libjpeg-turbo (ver 2.1.3-62)
SIMD Support Request: YES
SIMD Support: NO
WEBP: build (ver encoder: 0x020f)
PNG: build (ver 1.6.37)
TIFF: build (ver 42 - 4.2.0)
JPEG 2000: build (ver 2.5.0)
OpenEXR: build (ver 2.3.0)
HDR: YES
SUNRASTER: YES
PXM: YES
PFM: YES
Video I/O:
DC1394: NO
FFMPEG: NO
avcodec: NO
avformat: NO
avutil: NO
swscale: NO
avresample: NO
GStreamer: NO
v4l/v4l2: YES (linux/videodev2.h)
Parallel framework: pthreads
Trace: YES (with Intel ITT)
Other third-party libraries:
Intel IPP: 2021.10.0 [2021.10.0]
at: /home/runner/work/opencv/opencv/opencv-4.9.0/build/3rdparty/ippicv/ippicv_lnx/icv
Intel IPP IW: sources (2021.10.0)
at: /home/runner/work/opencv/opencv/opencv-4.9.0/build/3rdparty/ippicv/ippicv_lnx/iw
VA: NO
Lapack: NO
Eigen: NO
Custom HAL: NO
Protobuf: build (3.19.1)
Flatbuffers: builtin/3rdparty (23.5.9)
OpenCL: YES (no extra features)
Include path: /home/runner/work/opencv/opencv/opencv-4.9.0/3rdparty/include/opencl/1.2
Link libraries: Dynamic load
Python (for build): /usr/bin/python3
Java: export all functions
ant: /bin/ant (ver 1.10.7)
Java: NO
JNI: /opt/hostedtoolcache/jdk/8.0.392/x64/include /opt/hostedtoolcache/jdk/8.0.392/x64/include/linux /opt/hostedtoolcache/jdk/8.0.392/x64/include
Java wrappers: YES (ANT)
Java tests: NO
Install to: /usr/local
-----------------------------------------------------------------
感谢 @ChristophRackwitz 和
getBuildInformation()
的建议,我发现我的视频 I/O 是空的。因此我必须获得正确的构建。