OpenCV 2.4.9 HIGHGUI ERROR: V4L2: Could not obtain specifics of capture window.
Hi,
In first place sorry for my bad english.
I am very new in OpenCV, I am trying to record a video stream from a "Hauppauge HS PVR" usb device (ID 2040:4903). I am using "Debian GNU/Linux jessie/sid" from testing branch. I was compiled OpenCV using this instructions: http://docs.opencv.org/doc/tutorials/introduction/desktop_java/java_dev_intro.html (OpenCV was not download using git as the instructions says, it was downloaded manually from opencv web page at version 2.4.9) The compilation was fine. This is the output of CMAKE that was compiled good:
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================= START OF CMAKE OUTPUT ==============
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root@debian:/usr/src/opencv-2.4.9# cmake -DBUILD_SHARED_LIBS=OFF -DWITH_QT=ON ../opencv-2.4.9/
-- Detected version of GNU GCC: 49 (409)
-- Could NOT find ZLIB (missing: ZLIB_LIBRARY ZLIB_INCLUDE_DIR)
-- Could NOT find TIFF (missing: TIFF_LIBRARY TIFF_INCLUDE_DIR)
-- Could NOT find JPEG (missing: JPEG_LIBRARY JPEG_INCLUDE_DIR)
-- Could NOT find Jasper (missing: JASPER_LIBRARIES JASPER_INCLUDE_DIR)
-- Could NOT find PNG (missing: PNG_LIBRARY PNG_PNG_INCLUDE_DIR)
CMake Warning at cmake/OpenCVFindLibsGUI.cmake:18 (find_package):
By not providing "FindQt5Core.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "Qt5Core", but
CMake did not find one.
Could not find a package configuration file provided by "Qt5Core" with any
of the following names:
Qt5CoreConfig.cmake
qt5core-config.cmake
Add the installation prefix of "Qt5Core" to CMAKE_PREFIX_PATH or set
"Qt5Core_DIR" to a directory containing one of the above files. If
"Qt5Core" provides a separate development package or SDK, be sure it has
been installed.
Call Stack (most recent call first):
CMakeLists.txt:466 (include)
CMake Warning at cmake/OpenCVFindLibsGUI.cmake:19 (find_package):
By not providing "FindQt5Gui.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "Qt5Gui", but
CMake did not find one.
Could not find a package configuration file provided by "Qt5Gui" with any
of the following names:
Qt5GuiConfig.cmake
qt5gui-config.cmake
Add the installation prefix of "Qt5Gui" to CMAKE_PREFIX_PATH or set
"Qt5Gui_DIR" to a directory containing one of the above files. If "Qt5Gui"
provides a separate development package or SDK, be sure it has been
installed.
Call Stack (most recent call first):
CMakeLists.txt:466 (include)
CMake Warning at cmake/OpenCVFindLibsGUI.cmake:20 (find_package):
By not providing "FindQt5Widgets.cmake" in CMAKE_MODULE_PATH this project
has asked CMake to find a package configuration file provided by
"Qt5Widgets", but CMake did not find one.
Could not find a package configuration file provided by "Qt5Widgets" with
any of the following names:
Qt5WidgetsConfig.cmake
qt5widgets-config.cmake
Add the installation prefix of "Qt5Widgets" to CMAKE_PREFIX_PATH or set
"Qt5Widgets_DIR" to a directory containing one of the above files. If
"Qt5Widgets" provides a separate development package or SDK, be sure it has
been installed.
Call Stack (most recent call first):
CMakeLists.txt:466 (include)
CMake Warning at cmake/OpenCVFindLibsGUI.cmake:21 (find_package):
By not providing "FindQt5Test.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "Qt5Test", but
CMake did not find one.
Could not find a package configuration file provided by "Qt5Test" with any
of the following names:
Qt5TestConfig.cmake
qt5test-config.cmake
Add the installation prefix of "Qt5Test" to CMAKE_PREFIX_PATH or set
"Qt5Test_DIR" to a directory containing one of the above files. If
"Qt5Test" provides a separate development package or SDK, be sure it has
been installed.
Call Stack (most recent call first):
CMakeLists.txt:466 (include)
CMake Warning at cmake/OpenCVFindLibsGUI.cmake:22 (find_package):
By not providing "FindQt5Concurrent.cmake" in CMAKE_MODULE_PATH this
project has asked CMake to find a package configuration file provided by
"Qt5Concurrent", but CMake did not find one.
Could not find a package configuration file provided by "Qt5Concurrent"
with any of the following names:
Qt5ConcurrentConfig.cmake
qt5concurrent-config.cmake
Add the installation prefix of "Qt5Concurrent" to CMAKE_PREFIX_PATH or set
"Qt5Concurrent_DIR" to a directory containing one of the above files. If
"Qt5Concurrent" provides a separate development package or SDK, be sure it
has been installed.
Call Stack (most recent call first):
CMakeLists.txt:466 (include)
-- Looking for Q_WS_X11
-- Looking for Q_WS_X11 - found
-- Looking for Q_WS_WIN
-- Looking for Q_WS_WIN - not found
-- Looking for Q_WS_QWS
-- Looking for Q_WS_QWS - not found
-- Looking for Q_WS_MAC
-- Looking for Q_WS_MAC - not found
-- Found Qt4: /usr/bin/qmake (found version "4.8.6")
-- Looking for linux/videodev.h
-- Looking for linux/videodev.h - not found
-- Looking for linux/videodev2.h
-- Looking for linux/videodev2.h - found
-- Looking for sys/videoio.h
-- Looking for sys/videoio.h - not found
-- Looking for libavformat/avformat.h
-- Looking for libavformat/avformat.h - not found
-- Looking for ffmpeg/avformat.h
-- Looking for ffmpeg/avformat.h - not found
-- Found apache ant 1.9.4: /usr/bin/ant
--
-- General configuration for OpenCV 2.4.9 =====================================
-- Version control: unknown
--
-- Platform:
-- Host: Linux 3.14-2-amd64 x86_64
-- CMake: 2.8.12.2
-- CMake generator: Unix Makefiles
-- CMake build tool: /usr/bin/make
-- Configuration: Release
--
-- C/C++:
-- Built as dynamic libs?: NO
-- C++ Compiler: /usr/bin/c++ (ver 4.9.1)
-- C++ flags (Release): -fPIC -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wno-narrowing -Wno-delete-non-virtual-dtor -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -O3 -DNDEBUG -DNDEBUG
-- C++ flags (Debug): -fPIC -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wno-narrowing -Wno-delete-non-virtual-dtor -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -g -O0 -DDEBUG -D_DEBUG
-- C Compiler: /usr/bin/cc
-- C flags (Release): -fPIC -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wno-narrowing -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -O3 -DNDEBUG -DNDEBUG
-- C flags (Debug): -fPIC -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wno-narrowing -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -g -O0 -DDEBUG -D_DEBUG
-- Linker flags (Release):
-- Linker flags (Debug):
-- Precompiled headers: YES
--
-- OpenCV modules:
-- To be built: core flann imgproc highgui features2d calib3d ml video legacy objdetect photo gpu ocl nonfree contrib java python stitching superres ts videostab
-- Disabled: world
-- Disabled by dependency: -
-- Unavailable: androidcamera dynamicuda viz
--
-- GUI:
-- QT 4.x: YES (ver 4.8.6 EDITION = OpenSource)
-- QT OpenGL support: NO
-- OpenGL support: NO
-- VTK support: NO
--
-- Media I/O:
-- ZLib: zlib (ver 1.2.7)
-- JPEG: libjpeg (ver 62)
-- PNG: build (ver 1.5.12)
-- TIFF: build (ver 42 - 4.0.2)
-- JPEG 2000: build (ver 1.900.1)
-- OpenEXR: build (ver 1.7.1)
--
-- Video I/O:
-- DC1394 1.x: NO
-- DC1394 2.x: NO
-- FFMPEG: NO
-- codec: NO
-- format: NO
-- util: NO
-- swscale: NO
-- gentoo-style: NO
-- GStreamer: NO
-- OpenNI: NO
-- OpenNI PrimeSensor Modules: NO
-- PvAPI: NO
-- GigEVisionSDK: NO
-- UniCap: NO
-- UniCap ucil: NO
-- V4L/V4L2: NO/YES
-- XIMEA: NO
-- Xine: NO
--
-- Other third-party libraries:
-- Use IPP: NO
-- Use Eigen: NO
-- Use TBB: NO
-- Use OpenMP: NO
-- Use GCD NO
-- Use Concurrency NO
-- Use C=: NO
-- Use Cuda: NO
-- Use OpenCL: YES
--
-- OpenCL:
-- Version: dynamic
-- Include path: /usr/src/opencv-2.4.9/3rdparty/include/opencl/1.2
-- Use AMD FFT: NO
-- Use AMD BLAS: NO
--
-- Python:
-- Interpreter: /usr/bin/python2 (ver 2.7.8)
-- Libraries: /usr/lib/x86_64-linux-gnu/libpython2.7.so (ver 2.7.8)
-- numpy: /usr/lib/python2.7/dist-packages/numpy/core/include (ver 1.8.2)
-- packages path: lib/python2.7/dist-packages
--
-- Java:
-- ant: /usr/bin/ant (ver 1.9.4)
-- JNI: /usr/lib/jvm/java-7-openjdk-amd64/include /usr/lib/jvm/java-7-openjdk-amd64/include /usr/lib/jvm/java-7-openjdk-amd64/include
-- Java tests: YES
--
-- Documentation:
-- Build Documentation: NO
-- Sphinx: NO
-- PdfLaTeX compiler: NO
--
-- Tests and samples:
-- Tests: YES
-- Performance tests: YES
-- C/C++ Examples: NO
--
-- Install path: /usr/local
--
-- cvconfig.h is in: /usr/src/opencv-2.4.9
-- -----------------------------------------------------------------
--
CMake Warning at CMakeLists.txt:1054 (message):
The source directory is the same as binary directory. "make clean" may
damage the source tree
-- Configuring done
-- Generating done
-- Build files have been written to: /usr/src/opencv-2.4.9
------------------------------------------------------------------
================= END OF CMAKE OUTPUT ==============
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This is the sample code that I am using to test the device (I am using the java module of OpenCV):
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================= START OF JAVA SAMPLE ==============
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import org.opencv.core.*;
import org.opencv.highgui.*;
public class Main {
public static void main(String[] args) {
System.out.println("Welcome to OpenCV " + Core.VERSION);
System.out.println("System.loadLibrary: "+Core.NATIVE_LIBRARY_NAME);
System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
Mat m = Mat.eye(3, 3, CvType.CV_8UC1);
System.out.println("m = " + m.dump());
VideoCapture cap=new VideoCapture(0);
if(cap.isOpened()) System.out.println("cap.isOpened");
else System.out.println("cap.isNotOpened");
try{Thread.sleep(3000);}catch(Exception e){}
cap.read(m);
try{Thread.sleep(3000);}catch(Exception e){}
System.out.println("image = " + m.dump());
cap.release();
}
}
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================= END OF JAVA SAMPLE ==============
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And this is the result at the moment of execution:
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============== START OF EXECUTION OUTPUT ==============
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root@debian:~# java -Djava.library.path=/usr/src/opencv-2.4.9/lib/ -cp .:/usr/src/opencv-2.4.9/bin/opencv-249.jar Main
Welcome to OpenCV 2.4.9.0
System.loadLibrary: opencv_java249
m = [1, 0, 0;
0, 1, 0;
0, 0, 1]
HIGHGUI ERROR: V4L2: Could not obtain specifics of capture window.
cap.isOpened
VIDIOC_STREAMON: Descriptor de fichero erróneo
image = []
Unable to stop the stream.: Descriptor de fichero erróneo
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=============== END OF EXECUTION OUTPUT ==============
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My Question is, why I am getting the error "HIGHGUI ERROR: V4L2: Could not obtain specifics of capture window."?
The device is operating correct and is not damaged. For example if I execute "dd if=/dev/video0 of=/root/video.ts" I return a file with video stream in good state and it can be played with VLC with out problems.
Thanks for your help and sorry for my bad english.
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