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GetID3 - Bloc informations de fichiers
9 avril 2013, par
Mis à jour : Mai 2013
Langue : français
Type : Image
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GetID3 - Boutons supplémentaires
9 avril 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Image
Autres articles (95)
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MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
Multilang : améliorer l’interface pour les blocs multilingues
18 février 2011, parMultilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela. -
Participer à sa traduction
10 avril 2011Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
Actuellement MediaSPIP n’est disponible qu’en français et (...)
Sur d’autres sites (9411)
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Piwik Analytics and becoming a Piwik Certified Professional
10 juillet 2017, par Piwik Core Team — AboutDigital Analytics software
Piwik Analytics is the leading open source digital analytics software, offering users around the world an opportunity to liberate their analytics. Most recently, they have introduced the Piwik Certified Professional certification exam which now allows users to become qualified in Piwik Analytics software on an individual level to gain a deeper understanding of Piwik. In this blog post I will guide you through the topics that are covered during the exam and provide you with advice on taking the official Piwik Certified Professional exam.
Piwik certification exam
Taking the exam will cost you a maximum investment of 60 minutes of your time, besides learning all materials of course. The exam consists of 55 multiple choice questions with four answers to choose from. The score needed to pass is 80% (44 questions answered correctly) and the cost is 50 USD total. An earned certificate is valid for 18 months, before these eighteen months are over a person should pass the exam again in order to retain the certified status.
Learning topics
The exam consists of two sections. The main section is focused on the Piwik Analytics software itself while the second part relates to digital analytics in general. All topics and content covered about Piwik Analytics is available through the official Piwik user guides. The second section tests your experience as a digital analyst, online marketer or any other function title in which you work with Piwik Analytics. In this case, the general digital analytics questions should be quite straightforward and easy to answer, and cover only a fraction of the total questions in the exam (around 10% with 5-7 general questions). An outline of all exam topics are listed below :
- A Tour of Piwik
- Track Goals and Measure Conversions
- Event Tracking
- Content Tracking
- Ecommerce Analytics
- Row Evolution – View and compare historical data
- Segmentation – Compare segments of visitors
- Visitors Maps – World, region, city
- Real Time Visitor World Map
- Real Time Analytics
- The Visitor Profile
- Site speed and Page speed
- Site Search Tracking and Reporting
- Transitions – Analyze the previous and following actions of your visitors for each page
- Page Overlay
- Custom Variables Analytics
- Custom Dimensions
- User ID
- Annotating your data
- Tracking Campaigns
- URL Builder for Marketing Campaign Tracking
The best way to prepare for the exam is read the entire Piwik user guides. You should definitely read the “Analytics Features” section since most questions of the Piwik Certified Professional – Digital Analytics exam that will be asked come from these sections. Furthermore you should be able to find your way around in Piwik at a basic level which means you know what the reports mean and where to find certain information. In addition, some basic knowledge regarding the settings is useful too. The exam is definitely not a technical implementation exam so no coding knowledge or any other deeply technical knowledge regarding Piwik is required.
Finally, some general questions will be asked regarding digital analytics covering topics about KPI’s and the role of the analyst within an organization. While Piwik provides some links to articles by Avinash Kaushik covering these topics, you will not be able to learn these topics just by reading. When you have some experience with digital analytics you should be able to answer these general digital analytics questions with common sense and (even basic) experience as a digital analyst, analytics consultant, online marketer or any other related job whereby you work with Piwik.
Taking the exam
With 55 questions to be answered in 60 minutes the key to passing the exam is to keep moving. You have about 1 minute and 5 seconds to answer each question. This means that you should focus on the easiest questions first and return later to the questions that are a bit more challenging to answer. Keep an eye on the timer that will be displayed in the exam window. When the time expires or you click ‘Finish test’ your exam will end and be automatically submitted for review. Remember to first check all questions and answers before you click on the ‘Finish test’ button. If you click too soon and you still haven’t answered all questions, all unanswered questions will be marked as incorrect.
During the test, no hard copy or online materials may be referenced. As you can imagine, it is almost impossible to check if users reference these kind of materials. However, be aware of the penalty system that is in place during the test. When a user leaves from the active test screen to another screen (i.e. a different browser tab) the screen turns red and provides a warning count when the user returns to the test screen again. You will have three warnings, after this your test will be submitted and graded as false. Furthermore, keep in mind you will have to do the test in one go and cannot pause and come back another time.
Practice makes perfect
Below I have included some example questions that could be asked during the exam. These questions do not necessarily represent how Piwik will test you on these topics.
- What is the default report date that is selected by Piwik ?
- Why would someone flatten a report in Piwik ?
- Why would a user especially use the Page Overlay report ?
- What are the three main Ecommerce interactions tracked with Piwik ?
- What is an example of an anonymized IP address in Piwik ?
Passing the Piwik Certified Professional – Digital Analytics exam
Directly after submitting the exam you will receive a notification telling you whether or not you have passed the exam. If you pass, you will be able to download your personal certification right away. A report of your exam performance will also be available. This report lists the amount of correct answers and total questions by topic. The report with your exam performance is also available if you did not pass the exam. The certificate is valid for 18 months from the date of successful completion.
Sometimes the difference between passing and failing can be a matter of how you interpret some of Piwik’s questions. There are several tricky questions included, so be sure to pay attention to detail on every question. If you fail, you may take the exam again. You will have to pay the 50 USD fee for each try, so do your best to pass it the first time.
→ Register to become a Piwik Certified Professional.
We wish you the best of luck and happy analytics !
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Opencv crosscompile with ffmpeg and other 3rdparty for arm board
16 juin 2017, par Little ToothAfter buliding Qt5.5.1 for my arm board sucessfully, I am taking up to crosscompile opencv. Here are the steps :
First, I crosscompile 3rdparty :
a.libz
lmk@lmk-virtual-machine:/home/newdisk$ sudo tar -zvxf zlib-1.2.8.tar.gz
lmk@lmk-virtual-machine:/home/newdisk$ cd zlib-1.2.8
lmk@lmk-virtual-machine:/home/newdisk/zlib-1.2.8$ sudo ./configure --prefix=/home/newdisk/optnew/opencv-rely -shared
lmk@lmk-virtual-machine:/home/newdisk/zlib-1.2.8$ sudo vi Makefileand etit Makefile in some details :
#Makefile
CC=/home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-none-linux-gnueabi-gcc
LDSHARED= /home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-none-linux-gnueabi-gcc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map
AR=/home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-none-linux-gnueabi-ar
RANLIB=arm-linux-ranlibthe last step is run make and make install :
lmk@lmk-virtual-machine:/home/newdisk/zlib-1.2.8$ sudo make
lmk@lmk-virtual-machine:/home/newdisk/zlib-1.2.8$ sudo make installb.libjpeg
lmk@lmk-virtual-machine:/home/newdisk$ sudo tar -zvxf jpegsrc.v9.tar.gz
lmk@lmk-virtual-machine:/home/newdisk$ cd jpeg-9
lmk@lmk-virtual-machine:/home/newdisk/jpeg-9$ sudo CC=/home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-none-linux-gnueabi-gcc ./configure --host=arm-linux --prefix=/home/newdisk/optnew/opencv-rely --enable-shared --enable-static
lmk@lmk-virtual-machine:/home/newdisk/jpeg-9$ sudo make
lmk@lmk-virtual-machine:/home/newdisk/jpeg-9$ sudo make installc.libpng
lmk@lmk-virtual-machine:/home/newdisk$ sudo xz -d libpng-1.6.29.tar.xz
lmk@lmk-virtual-machine:/home/newdisk$ sudo tar -xvf libpng-1.6.29.tar
lmk@lmk-virtual-machine:/home/newdisk$ cd libpng-1.6.29
lmk@lmk-virtual-machine:/home/newdisk/libpng-1.6.29$ sudo CC=/home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-none-linux-gnueabi-gcc ./configure --host=arm-linux --prefix=/home/newdisk/optnew/opencv-rely --enable-shared --enable-static
lmk@lmk-virtual-machine:/home/newdisk/libpng-1.6.29$ sudo make
lmk@lmk-virtual-machine:/home/newdisk/libpng-1.6.29$ sudo make installd.yasm
lmk@lmk-virtual-machine:/home/newdisk$ sudo tar -zvxf yasm-1.3.0.tar.gz
lmk@lmk-virtual-machine:/home/newdisk$ cd yasm-1.3.0
lmk@lmk-virtual-machine:/home/newdisk/yasm-1.3.0$ sudo CC=/home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-none-linux-gnueabi-gcc ./configure --prefix=/home/newdisk/optnew/opencv-rely --host=arm-linux
lmk@lmk-virtual-machine:/home/newdisk/yasm-1.3.0$ sudo make
lmk@lmk-virtual-machine:/home/newdisk/yasm-1.3.0$ sudo make installe.libx264
lmk@lmk-virtual-machine:/home/newdisk$ sudo tar -jxvf last_x264.tar.bz2
lmk@lmk-virtual-machine:/home/newdisk$ cd x264-snapshot-20170612-2245
lmk@lmk-virtual-machine:/home/newdisk/x264-snapshot-20170612-2245$ sudo CC=/home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-none-linux-gnueabi-gcc ./configure --enable-shared --host=arm-linux --disable-asm --prefix=/home/newdisk/optnew/opencv-rely
lmk@lmk-virtual-machine:/home/newdisk/x264-snapshot-20170612-2245$ sudo make
lmk@lmk-virtual-machine:/home/newdisk/x264-snapshot-20170612-2245$ sudo make installf.libxvid
lmk@lmk-virtual-machine:/home/newdisk$ cd xvidcore-1.3.3
lmk@lmk-virtual-machine:/home/newdisk/xvidcore-1.3.3$ cd build/generic
lmk@lmk-virtual-machine:/home/newdisk/xvidcore-1.3.3/build/generic$ sudo CC=/home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-none-linux-gnueabi-gcc ./configure --prefix=/home/newdisk/optnew/opencv-rely --host=arm-linux --disable-assembly
lmk@lmk-virtual-machine:/home/newdisk/xvidcore-1.3.3/build/generic$ sudo make
lmk@lmk-virtual-machine:/home/newdisk/xvidcore-1.3.3/build/generic$ sudo make installg.ffmpeg
lmk@lmk-virtual-machine:/home/newdisk$ sudo tar -jvxf ffmpeg-3.3.2.tar.bz2
lmk@lmk-virtual-machine:/home/newdisk$ cd ffmpeg-3.3.2
lmk@lmk-virtual-machine:/home/newdisk/ffmpeg-3.3.2$
sudo ./configure --prefix=/home/newdisk/optnew/opencv-rely --enable-shared --disable-static --enable-gpl --enable-cross-compile --arch=arm --disable-stripping --target-os=linux --enable-libx264 --enable-libxvid --cc=/home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-none-linux-gnueabi-gcc --enable-swscale --extra-ldflags=-L/home/newdisk/optnew/opencv-rely/lib --extra-cflags=-I/home/newdisk/optnew/opencv-rely/include
lmk@lmk-virtual-machine:/home/newdisk/ffmpeg-3.3.2$ sudo make
lmk@lmk-virtual-machine:/home/newdisk/ffmpeg-3.3.2$ sudo make installThere is no problem in 3rdparty crosscompile.
Next, opencv crosscompile :lmk@lmk-virtual-machine:/home/newdisk$ sudo unzip opencv-3.1.0.zip
lmk@lmk-virtual-machine:/home/newdisk$ cd opencv-3.1.0
lmk@lmk-virtual-machine:/home/newdisk/opencv-3.1.0$ sudo mkdir BuildOpencv
lmk@lmk-virtual-machine:/home/newdisk/opencv-3.1.0$ cd BuildOpencv
lmk@lmk-virtual-machine:/home/newdisk/opencv-3.1.0/BuildOpencv$ sudo vim toolchain.cmake
#toolchain.cmake
###########user defined#############
set( CMAKE_SYSTEM_NAME Linux )
set( CMAKE_SYSTEM_PROCESSOR arm )
set( CMAKE_C_COMPILER /home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-linux-gcc )
set( CMAKE_CXX_COMPILER /home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-linux-g++ )
###########user defined#############
set( CMAKE_FIND_ROOT_PATH /home/newdisk/optnew/opencv-rely)
set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER )
set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
######################################Then I run cmake :
lmk@lmk-virtual-machine:/home/newdisk/opencv-3.1.0/BuildOpencv$ sudo cmake -DCMAKE_TOOLCHAIN_FILE=toolchain.cmake ../Here is the result：
-- Detected version of GNU GCC: 45 (405)
-- Found ZLIB: /home/newdisk/optnew/opencv-rely/lib/libz.so (found suitable version "1.2.8", minimum required is "1.2.3")
-- Could NOT find TIFF (missing: TIFF_LIBRARY TIFF_INCLUDE_DIR)
-- Could NOT find Jasper (missing: JASPER_LIBRARIES) (found version "1.900.1")
-- Found ZLIB: /home/newdisk/optnew/opencv-rely/lib/libz.so (found version "1.2.8")
-- checking for module 'gtk+-3.0'
-- package 'gtk+-3.0' not found
-- checking for module 'gstreamer-base-1.0'
-- package 'gstreamer-base-1.0' not found
-- checking for module 'gstreamer-video-1.0'
-- package 'gstreamer-video-1.0' not found
-- checking for module 'gstreamer-app-1.0'
-- package 'gstreamer-app-1.0' not found
-- checking for module 'gstreamer-riff-1.0'
-- package 'gstreamer-riff-1.0' not found
-- checking for module 'gstreamer-pbutils-1.0'
-- package 'gstreamer-pbutils-1.0' not found
-- checking for module 'gstreamer-base-0.10'
-- package 'gstreamer-base-0.10' not found
-- checking for module 'gstreamer-video-0.10'
-- package 'gstreamer-video-0.10' not found
-- checking for module 'gstreamer-app-0.10'
-- package 'gstreamer-app-0.10' not found
-- checking for module 'gstreamer-riff-0.10'
-- package 'gstreamer-riff-0.10' not found
-- checking for module 'gstreamer-pbutils-0.10'
-- package 'gstreamer-pbutils-0.10' not found
-- Looking for linux/videodev.h
-- Looking for linux/videodev.h - found
-- Looking for linux/videodev2.h
-- Looking for linux/videodev2.h - found
-- Looking for sys/videoio.h
-- Looking for sys/videoio.h - not found
-- checking for module 'libavresample'
-- package 'libavresample' 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
-- checking for module 'libgphoto2'
-- package 'libgphoto2' not found
-- Could NOT find Doxygen (missing: DOXYGEN_EXECUTABLE)
-- To enable PlantUML support, set PLANTUML_JAR environment variable or pass -DPLANTUML_JAR=<filepath> option to cmake
-- Found PythonInterp: /usr/bin/python2.7 (found suitable version "2.7.6", minimum required is "2.7")
-- Could NOT find PythonLibs (missing: PYTHON_LIBRARIES) (found suitable version "2.7.6", minimum required is "2.7")
-- Cannot probe for Python/Numpy support (because we are cross-compiling OpenCV)
-- If you want to enable Python/Numpy support, set the following variables:
-- PYTHON2_INCLUDE_PATH
-- PYTHON2_LIBRARIES
-- PYTHON2_NUMPY_INCLUDE_DIRS
-- PYTHON3_INCLUDE_PATH
-- PYTHON3_LIBRARIES
-- PYTHON3_NUMPY_INCLUDE_DIRS
-- Found PythonInterp: /usr/bin/python3.4 (found suitable version "3.4.3", minimum required is "3.4")
-- Could NOT find PythonLibs (missing: PYTHON_LIBRARIES) (Required is at least version "3.4")
-- Cannot probe for Python/Numpy support (because we are cross-compiling OpenCV)
-- If you want to enable Python/Numpy support, set the following variables:
-- PYTHON2_INCLUDE_PATH
-- PYTHON2_LIBRARIES
-- PYTHON2_NUMPY_INCLUDE_DIRS
-- PYTHON3_INCLUDE_PATH
-- PYTHON3_LIBRARIES
-- PYTHON3_NUMPY_INCLUDE_DIRS
-- Could NOT find JNI (missing: JAVA_AWT_LIBRARY JAVA_JVM_LIBRARY JAVA_INCLUDE_PATH JAVA_INCLUDE_PATH2 JAVA_AWT_INCLUDE_PATH)
-- Could NOT find Matlab (missing: MATLAB_MEX_SCRIPT MATLAB_INCLUDE_DIRS MATLAB_ROOT_DIR MATLAB_LIBRARIES MATLAB_LIBRARY_DIRS MATLAB_MEXEXT MATLAB_ARCH MATLAB_BIN)
--
-- General configuration for OpenCV 3.1.0
=====================================
-- Version control: unknown
--
-- Platform:
-- Host: Linux 3.16.0-77-generic i686
-- Target: Linux arm
-- CMake: 2.8.12.2
-- CMake generator: Unix Makefiles
-- CMake build tool: /usr/bin/make
-- Configuration: Release
--
-- C/C++:
-- Built as dynamic libs?: YES
-- C++ Compiler: /home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-linux-g++ (ver 4.5.1)
-- C++ flags (Release): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG -DNDEBUG
-- C++ flags (Debug): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden -g -O0 -DDEBUG -D_DEBUG
-- C Compiler: /home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-linux-gcc
-- C flags (Release): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fvisibility=hidden -O3 -DNDEBUG -DNDEBUG
-- C flags (Debug): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fvisibility=hidden -g -O0 -DDEBUG -D_DEBUG
-- Linker flags (Release):
-- Linker flags (Debug):
-- Precompiled headers: YES
-- Extra dependencies: /home/newdisk/optnew/opencv-rely/lib/libjpeg.so /home/newdisk/optnew/opencv-rely/lib/libpng.so /home/newdisk/optnew/opencv-rely/lib/libz.so gtk-x11-2.0 gdk-x11-2.0 atk-1.0 gio-2.0 pangoft2-1.0 pangocairo-1.0 gdk_pixbuf-2.0 cairo pango-1.0 fontconfig gobject-2.0 freetype gthread-2.0 glib-2.0 dc1394 v4l1 v4l2 avcodec avformat avutil swscale dl m pthread rt
-- 3rdparty dependencies: libwebp libtiff libjasper IlmImf
--
-- OpenCV modules:
-- To be built: core flann imgproc ml photo video imgcodecs shape videoio highgui objdetect superres ts features2d calib3d stitching videostab
-- Disabled: world
-- Disabled by dependency: -
-- Unavailable: cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev java python2 python3 viz
--
-- GUI:
-- QT: NO
-- GTK+ 2.x: YES (ver 2.24.23)
-- GThread : YES (ver 2.40.2)
-- GtkGlExt: NO
-- OpenGL support: NO
-- VTK support: NO
--
-- Media I/O:
-- ZLib: /home/newdisk/optnew/opencv-rely/lib/libz.so (ver 1.2.8)
-- JPEG: /home/newdisk/optnew/opencv-rely/lib/libjpeg.so (ver 90)
-- WEBP: build (ver 0.3.1)
-- PNG: /home/newdisk/optnew/opencv-rely/lib/libpng.so (ver 1.6.29)
-- TIFF: build (ver 42 - 4.0.2)
-- JPEG 2000: build (ver 1.900.1)
-- OpenEXR: build (ver 1.7.1)
-- GDAL: NO
--
-- Video I/O:
-- DC1394 1.x: NO
-- DC1394 2.x: YES (ver 2.2.1)
-- FFMPEG: YES
-- codec: YES (ver 54.35.1)
-- format: YES (ver 54.20.4)
-- util: YES (ver 52.3.0)
-- swscale: YES (ver 2.1.1)
-- resample: NO
-- gentoo-style: YES
-- GStreamer: NO
-- OpenNI: NO
-- OpenNI PrimeSensor Modules: NO
-- OpenNI2: NO
-- PvAPI: NO
-- GigEVisionSDK: NO
-- UniCap: NO
-- UniCap ucil: NO
-- V4L/V4L2: Using libv4l1 (ver 0.8.8) / libv4l2 (ver 0.8.8)
-- XIMEA: NO
-- Xine: NO
-- gPhoto2: NO
--
-- Parallel framework: pthreads
--
-- Other third-party libraries:
-- Use IPP: NO
-- Use VA: NO
-- Use Intel VA-API/OpenCL: NO
-- Use Eigen: NO
-- Use Cuda: NO
-- Use OpenCL: YES
-- Use custom HAL: NO
--
-- OpenCL:
-- Version: dynamic
-- Include path: /home/newdisk/opencv-3.1.0/3rdparty/include/opencl/1.2
-- Use AMDFFT: NO
-- Use AMDBLAS: NO
--
-- Python 2:
-- Interpreter: /usr/bin/python2.7 (ver 2.7.6)
--
-- Python 3:
-- Interpreter: /usr/bin/python3.4 (ver 3.4.3)
--
-- Python (for build): /usr/bin/python2.7
--
-- Java:
-- ant: NO
-- JNI: NO
-- Java wrappers: NO
-- Java tests: NO
--
-- Matlab: Matlab not found or implicitly disabled
--
-- Documentation:
-- Doxygen: NO
-- PlantUML: NO
--
-- Tests and samples:
-- Tests: YES
-- Performance tests: YES
-- C/C++ Examples: NO
--
-- Install path: /home/newdisk/opencv-3.1.0/BuildOpencv/install
--
-- cvconfig.h is in: /home/newdisk/opencv-3.1.0/BuildOpencv
-- -----------------------------------------------------------------
--
-- Configuring done
-- Generating done
-- Build files have been written to: /home/newdisk/opencv-3.1.0/BuildOpencv
</filepath>After configuring and generating, run cmake-gui :
lmk@lmk-virtual-machine:/home/newdisk/opencv-3.1.0/BuildOpencv$ sudo cmake-gui
Src:/home/newdisk/opencv-3.1.0
Build:/home/newdisk/opencv-3.1.0/BuildOpencv
CMAKE_INSTALL_PREFIX:/home/newdisk/optnew/opencv-arm
Don't choose these items:
WITH_CUDA
WITH_GTK
WITH_1394
WITH_GSTREAMER
WITH_LIBV4L
WITH_TIFF
BUILD_OPENEXR
WITH_OPENEXR
WITH_OPENCL
Configure and generate.
lmk@lmk-virtual-machine:/home/newdisk/opencv-3.1.0/BuildOpencv$ sudo vi CMakeCache.txt
#CMakeCache.txt
//Flags used by the linker.
CMAKE_EXE_LINKER_FLAGS:STRING=-lpthread -lrt
lmk@lmk-virtual-machine:/home/newdisk/opencv-3.1.0/BuildOpencv$ sudo makeFianlly,I got these errors :
[ 27%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_mjpeg_decoder.cpp.o
[ 27%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_v4l.cpp.o
[ 27%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_ffmpeg.cpp.o
In file included from /home/newdisk/opencv-3.1.0/modules/videoio/src/cap_ffmpeg_impl.hpp:65:0,
from /home/newdisk/opencv-3.1.0/modules/videoio/src/cap_ffmpeg.cpp:45:
/home/newdisk/opencv-3.1.0/modules/videoio/src/ffmpeg_codecs.hpp:77:36: fatal error: libavformat/avformat.h: No such file or directory
compilation terminated.
make[2]: *** [modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_ffmpeg.cpp.o] Error 1
make[1]: *** [modules/videoio/CMakeFiles/opencv_videoio.dir/all] Error 2
make: *** [all] Error 2While the file libavformat/avformat.h does exits in my directory
/home/newdisk/optnew/opencv-rely/includeWhy can cmake find lib directory
-- Found ZLIB: /home/newdisk/optnew/opencv-rely/lib/libz.so (found suitable version "1.2.8", minimum required is "1.2.3")but cannot find include directory ?
/home/newdisk/optnew/opencv-rely/includeDo you have any idea ?
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Cutting a live stream into separate mp4 files
9 juin 2017, par FearhunterI am doing a research for cutting a live stream in piece and save it as mp4 files. I am using this source for the proof of concept :
And this is the example code I use :
using System;
using System.Collections.Generic;
using System.Configuration;
using System.IO;
using System.Linq;
using System.Net;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;
using Microsoft.WindowsAzure.MediaServices.Client;
using Newtonsoft.Json.Linq;
namespace AMSLiveTest
{
class Program
{
private const string StreamingEndpointName = "streamingendpoint001";
private const string ChannelName = "channel001";
private const string AssetlName = "asset001";
private const string ProgramlName = "program001";
// Read values from the App.config file.
private static readonly string _mediaServicesAccountName =
ConfigurationManager.AppSettings["MediaServicesAccountName"];
private static readonly string _mediaServicesAccountKey =
ConfigurationManager.AppSettings["MediaServicesAccountKey"];
// Field for service context.
private static CloudMediaContext _context = null;
private static MediaServicesCredentials _cachedCredentials = null;
static void Main(string[] args)
{
// Create and cache the Media Services credentials in a static class variable.
_cachedCredentials = new MediaServicesCredentials(
_mediaServicesAccountName,
_mediaServicesAccountKey);
// Used the cached credentials to create CloudMediaContext.
_context = new CloudMediaContext(_cachedCredentials);
IChannel channel = CreateAndStartChannel();
// Set the Live Encoder to point to the channel's input endpoint:
string ingestUrl = channel.Input.Endpoints.FirstOrDefault().Url.ToString();
// Use the previewEndpoint to preview and verify
// that the input from the encoder is actually reaching the Channel.
string previewEndpoint = channel.Preview.Endpoints.FirstOrDefault().Url.ToString();
IProgram program = CreateAndStartProgram(channel);
ILocator locator = CreateLocatorForAsset(program.Asset, program.ArchiveWindowLength);
IStreamingEndpoint streamingEndpoint = CreateAndStartStreamingEndpoint();
GetLocatorsInAllStreamingEndpoints(program.Asset);
// Once you are done streaming, clean up your resources.
Cleanup(streamingEndpoint, channel);
}
public static IChannel CreateAndStartChannel()
{
//If you want to change the Smooth fragments to HLS segment ratio, you would set the ChannelCreationOptions’s Output property.
IChannel channel = _context.Channels.Create(
new ChannelCreationOptions
{
Name = ChannelName,
Input = CreateChannelInput(),
Preview = CreateChannelPreview()
});
//Starting and stopping Channels can take some time to execute. To determine the state of operations after calling Start or Stop, query the IChannel.State .
channel.Start();
return channel;
}
private static ChannelInput CreateChannelInput()
{
return new ChannelInput
{
StreamingProtocol = StreamingProtocol.RTMP,
AccessControl = new ChannelAccessControl
{
IPAllowList = new List<iprange>
{
new IPRange
{
Name = "TestChannelInput001",
// Setting 0.0.0.0 for Address and 0 for SubnetPrefixLength
// will allow access to IP addresses.
Address = IPAddress.Parse("0.0.0.0"),
SubnetPrefixLength = 0
}
}
}
};
}
private static ChannelPreview CreateChannelPreview()
{
return new ChannelPreview
{
AccessControl = new ChannelAccessControl
{
IPAllowList = new List<iprange>
{
new IPRange
{
Name = "TestChannelPreview001",
// Setting 0.0.0.0 for Address and 0 for SubnetPrefixLength
// will allow access to IP addresses.
Address = IPAddress.Parse("0.0.0.0"),
SubnetPrefixLength = 0
}
}
}
};
}
public static void UpdateCrossSiteAccessPoliciesForChannel(IChannel channel)
{
var clientPolicy =
@"<?xml version=""1.0"" encoding=""utf-8""?>
<policy>
<domain uri=""></domain>
<resource path=""></resource>"" include-subpaths=""true""/>
</policy>
";
var xdomainPolicy =
@"<?xml version=""1.0"" ?>
";
channel.CrossSiteAccessPolicies.ClientAccessPolicy = clientPolicy;
channel.CrossSiteAccessPolicies.CrossDomainPolicy = xdomainPolicy;
channel.Update();
}
public static IProgram CreateAndStartProgram(IChannel channel)
{
IAsset asset = _context.Assets.Create(AssetlName, AssetCreationOptions.None);
// Create a Program on the Channel. You can have multiple Programs that overlap or are sequential;
// however each Program must have a unique name within your Media Services account.
IProgram program = channel.Programs.Create(ProgramlName, TimeSpan.FromHours(3), asset.Id);
program.Start();
return program;
}
public static ILocator CreateLocatorForAsset(IAsset asset, TimeSpan ArchiveWindowLength)
{
// You cannot create a streaming locator using an AccessPolicy that includes write or delete permissions.
var locator = _context.Locators.CreateLocator
(
LocatorType.OnDemandOrigin,
asset,
_context.AccessPolicies.Create
(
"Live Stream Policy",
ArchiveWindowLength,
AccessPermissions.Read
)
);
return locator;
}
public static IStreamingEndpoint CreateAndStartStreamingEndpoint()
{
var options = new StreamingEndpointCreationOptions
{
Name = StreamingEndpointName,
ScaleUnits = 1,
AccessControl = GetAccessControl(),
CacheControl = GetCacheControl()
};
IStreamingEndpoint streamingEndpoint = _context.StreamingEndpoints.Create(options);
streamingEndpoint.Start();
return streamingEndpoint;
}
private static StreamingEndpointAccessControl GetAccessControl()
{
return new StreamingEndpointAccessControl
{
IPAllowList = new List<iprange>
{
new IPRange
{
Name = "Allow all",
Address = IPAddress.Parse("0.0.0.0"),
SubnetPrefixLength = 0
}
},
AkamaiSignatureHeaderAuthenticationKeyList = new List<akamaisignatureheaderauthenticationkey>
{
new AkamaiSignatureHeaderAuthenticationKey
{
Identifier = "My key",
Expiration = DateTime.UtcNow + TimeSpan.FromDays(365),
Base64Key = Convert.ToBase64String(GenerateRandomBytes(16))
}
}
};
}
private static byte[] GenerateRandomBytes(int length)
{
var bytes = new byte[length];
using (var rng = new RNGCryptoServiceProvider())
{
rng.GetBytes(bytes);
}
return bytes;
}
private static StreamingEndpointCacheControl GetCacheControl()
{
return new StreamingEndpointCacheControl
{
MaxAge = TimeSpan.FromSeconds(1000)
};
}
public static void UpdateCrossSiteAccessPoliciesForStreamingEndpoint(IStreamingEndpoint streamingEndpoint)
{
var clientPolicy =
@"<?xml version=""1.0"" encoding=""utf-8""?>
<policy>
<domain uri=""></domain>
<resource path=""></resource>"" include-subpaths=""true""/>
</policy>
";
var xdomainPolicy =
@"<?xml version=""1.0"" ?>
";
streamingEndpoint.CrossSiteAccessPolicies.ClientAccessPolicy = clientPolicy;
streamingEndpoint.CrossSiteAccessPolicies.CrossDomainPolicy = xdomainPolicy;
streamingEndpoint.Update();
}
public static void GetLocatorsInAllStreamingEndpoints(IAsset asset)
{
var locators = asset.Locators.Where(l => l.Type == LocatorType.OnDemandOrigin);
var ismFile = asset.AssetFiles.AsEnumerable().FirstOrDefault(a => a.Name.EndsWith(".ism"));
var template = new UriTemplate("{contentAccessComponent}/{ismFileName}/manifest");
var urls = locators.SelectMany(l =>
_context
.StreamingEndpoints
.AsEnumerable()
.Where(se => se.State == StreamingEndpointState.Running)
.Select(
se =>
template.BindByPosition(new Uri("http://" + se.HostName),
l.ContentAccessComponent,
ismFile.Name)))
.ToArray();
}
public static void Cleanup(IStreamingEndpoint streamingEndpoint,
IChannel channel)
{
if (streamingEndpoint != null)
{
streamingEndpoint.Stop();
streamingEndpoint.Delete();
}
IAsset asset;
if (channel != null)
{
foreach (var program in channel.Programs)
{
asset = _context.Assets.Where(se => se.Id == program.AssetId)
.FirstOrDefault();
program.Stop();
program.Delete();
if (asset != null)
{
foreach (var l in asset.Locators)
l.Delete();
asset.Delete();
}
}
channel.Stop();
channel.Delete();
}
}
}
}
</akamaisignatureheaderauthenticationkey></iprange></iprange></iprange>Now I want to make a method to cut a live stream for example every 15 minutes and save it as mp4 but don’t know where to start.
Can someone point me in the right direction ?
Kind regards
UPDATE :
I want to save the mp4 files on my hard disk.
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