2014-09-13 05:14:49 -0500 asked a question 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: ------------------------------------------------------------------ ================= START OF CMAKE OUTPUT ============== ------------------------------------------------------------------ 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 ...