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    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
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  • MediaSPIP version 0.1 Beta

    16 avril 2011, par

    MediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
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    Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
    Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)

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    13 septembre 2013

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Sur d’autres sites (10698)

  • cap.isOpened() : returns false in CentOS for Python 3 and OpenCV 3.1.0

    29 octobre 2017, par Mona Jalal

    So cap from opencv 3 doesn’t work in CentOS. I had no problem in OSX or Windows 7 which I tried initially.
    Here is the example code :

    import cv2
    
cap = cv2.VideoCapture('/home/grad3/jalal/PycharmProjects/hw4_cs58‌​5/Concession_LAN_8‌​‌​00‌​k.mp4',cv2.CAP_FFMPEG)
    

    
if not cap.isOpened():
    
    print('not opened')
    

    
while True:
    
    ret,frame = cap.read()
    

    
    if ret == False:
    
        print('frame empty')
    
        break
    
    cv2.imshow('frame', frame)
    
    if cv2.waitKey(1) == ord('q'):
    
        break

    And I get :

    /usr/local/anaconda3/bin/python /home/grad3/jalal/PycharmProjects/hw4_cs585/test.py
    
not opened
    
frame empty
    

    
Process finished with exit code 0

    I can open the video using ffplay vid_name and also here is the result of https://pastebin.com/YGk2DDCi here https://pastebin.com/HSyHSsEZ (ffmpeg codecs). How should I fix this ?

    I have opencv 3.1.0 and here’s some sys info.

    $ uname -a
    
Linux goku.bu.edu 3.10.0-693.5.2.el7.x86_64 #1 SMP Fri Oct 20 20:32:50 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

    and

    $ lsb_release -a
    
LSB Version:    :core-4.1-amd64:core-4.1-noarch
    
Distributor ID: CentOS
    
Description:    CentOS Linux release 7.4.1708 (Core) 
    
Release:    7.4.1708
    
Codename:   Core
    

    
cv2. getBuildInformation()
    
General configuration for OpenCV 3.1.0 =====================================
    
  Version control:               unknown
    

    
  Platform:
    
    Host:                        Linux 4.8.0-46-generic x86_64
    
    CMake:                       3.6.3
    
    CMake generator:             Unix Makefiles
    
    CMake build tool:            /usr/bin/gmake
    
    Configuration:               Release
    

    
  C/C++:
    
    Built as dynamic libs?:      YES
    
    C++ Compiler:                /opt/rh/devtoolset-2/root/usr/bin/c++  (ver 4.8.2)
    
    C++ flags (Release):         -I/cs/software/anaconda3/include    -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 -Wno-narrowing -Wno-delete-non-virtual-dtor -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -msse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden -fopenmp -O3 -DNDEBUG  -DNDEBUG
    
    C++ flags (Debug):           -I/cs/software/anaconda3/include    -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 -Wno-narrowing -Wno-delete-non-virtual-dtor -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -msse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden -fopenmp -g  -O0 -DDEBUG -D_DEBUG
    
    C Compiler:                  /opt/rh/devtoolset-2/root/usr/bin/cc
    
    C flags (Release):           -I/cs/software/anaconda3/include    -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 -Wno-narrowing -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -msse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -fopenmp -O3 -DNDEBUG  -DNDEBUG
    
    C flags (Debug):             -I/cs/software/anaconda3/include    -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 -Wno-narrowing -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -msse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -fopenmp -g  -O0 -DDEBUG -D_DEBUG
    
    Linker flags (Release):
    
    Linker flags (Debug):
    
    Precompiled headers:         YES
    
    Extra dependencies:          /cs/software/anaconda3/lib/libjpeg.so /cs/software/anaconda3/lib/libpng.so /cs/software/anaconda3/lib/libtiff.so /cs/software/anaconda3/lib/libhdf5.so /usr/lib64/librt.so /usr/lib64/libpthread.so /cs/software/anaconda3/lib/libz.so /usr/lib64/libdl.so /usr/lib64/libm.so dl m pthread rt
    
    3rdparty dependencies:       libwebp libjasper IlmImf libprotobuf
    

    
  OpenCV modules:
    
    To be built:                 core flann hdf imgproc ml photo reg surface_matching video dnn fuzzy imgcodecs shape videoio highgui objdetect plot superres xobjdetect xphoto bgsegm bioinspired dpm face features2d line_descriptor saliency text calib3d ccalib datasets rgbd stereo structured_light tracking videostab xfeatures2d ximgproc aruco optflow stitching python3
    
    Disabled:                    world contrib_world
    
    Disabled by dependency:      -
    
    Unavailable:                 cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev java python2 ts viz cvv matlab sfm
    

    
  GUI: 
    
    QT:                          NO
    
    GTK+:                        NO
    
    GThread :                    NO
    
    GtkGlExt:                    NO
    
    OpenGL support:              NO
    
    VTK support:                 NO
    

    
  Media I/O: 
    
    ZLib:                        /cs/software/anaconda3/lib/libz.so (ver 1.2.8)
    
    JPEG:                        /cs/software/anaconda3/lib/libjpeg.so (ver 80)
    
    WEBP:                        build (ver 0.3.1)
    
    PNG:                         /cs/software/anaconda3/lib/libpng.so (ver 1.6.27)
    
    TIFF:                        /cs/software/anaconda3/lib/libtiff.so (ver 42 - 4.0.6)
    
    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:                  NO
    
    FFMPEG:                      NO
    
      codec:                     NO
    
      format:                    NO
    
      util:                      NO
    
      swscale:                   NO
    
      resample:                  NO
    
      gentoo-style:              NO
    
    GStreamer:                   NO
    
    OpenNI:                      NO
    
    OpenNI PrimeSensor Modules:  NO
    
    OpenNI2:                     NO
    
    PvAPI:                       NO
    
    GigEVisionSDK:               NO
    
    UniCap:                      NO
    
    UniCap ucil:                 NO
    
    V4L/V4L2:                    YES/YES
    
    XIMEA:                       NO
    
    Xine:                        NO
    
    gPhoto2:                     NO
    

    
  Parallel framework:            OpenMP
    

    
  Other third-party libraries:
    
    Use IPP:                     9.0.1 [9.0.1]
    
         at:                     /opt/conda/conda-bld/opencv_1491943704081/work/opencv-3.1.0/3rdparty/ippicv/unpack/ippicv_lnx
    
    Use IPP Async:               NO
    
    Use VA:                      NO
    
    Use Intel VA-API/OpenCL:     NO
    
    Use Eigen:                   YES (ver 3.2.8)
    
    Use Cuda:                    NO
    
    Use OpenCL:                  NO
    
    Use custom HAL:              NO
    

    
  Python 2:
    
    Interpreter:                 (ver 3.5.3)
    

    
  Python 3:
    
    Interpreter:                 /cs/software/anaconda3/bin/python (ver 3.5.3)
    
    Libraries:                   /cs/software/anaconda3/lib/libpython3.5m.so (ver 3.5.3)
    
    numpy:                       /cs/software/anaconda3/lib/python3.5/site-packages/numpy/core/include (ver 1.12.1)
    
    packages path:               /cs/software/anaconda3/lib/python3.5/site-packages
    

    
  Python (for build):            
    

    
  Java:
    
    ant:                         NO
    
    JNI:                         NO
    
    Java wrappers:               NO
    
    Java tests:                  NO
    

    
  Matlab:                        NO
    

    
  Tests and samples:
    
    Tests:                       NO
    
    Performance tests:           NO
    
    C/C++ Examples:              NO
    

    
  Install path:                  /cs/software/anaconda3
    

    
  cvconfig.h is in:              /opt/conda/conda-bld/opencv_1491943704081/work/opencv-3.1.0/build
    
-----------------------------------------------------------------

    UPDATE : tried .avi and .flv formats and the same problem !

  • ffmpeg configure always returns "not found" when using sysroot and cross-prefix options - how to use them correctly ?

    5 août 2014, par user2212461

    I try to build ffmpeg with a cross-compiler. When setting the configure flags I am getting the following errors :

    WARNING: Compiler does not indicate floating-point ABI, guessing soft.
    
build_it.sh: 29: build_it.sh: --sysroot=/home/android/android-ndk-r9/platforms/
    
    android-9/arch-arm/: not found
    
build_it.sh: 32: build_it.sh.sh: --cross-prefix=/home/android/android-ndk-r9/
    
    toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86/bin/arm-linux-and
    
    roideabi-: not found

    The error message "not found" sounds like the paths dont exist but they are all correct and existing. How can I resolve this error ?

    build_it.sh :

    NDK=/home/android/android-ndk-r9
    
SYSROOT=$NDK/platforms/android-9/arch-arm/
    
TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86
    
CPU=arm
    
PREFIX=test
    
ADDI_CFLAGS="-marm"
    
platform="android-9"
    

    
./configure \
    
    --disable-asm \
    
    --enable-shared \
    
    --target-os=linux \
    
    --arch=arm \
    
    --enable-cross-compile \
    
    --disable-static \
    
    --sysroot=$SYSROOT \
    
    --extra-cflags="-Os -fpic $ADDI_CFLAGS" \
    
    --extra-ldflags="$ADDI_LDFLAGS"
    
    --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \
    
    --prefix=$PREFIX \
    

    
##configure fails here
    
...

  • Opencv VideoCapture not streaming RTSP link and returns "no frame !"

    6 septembre 2023, par Asadullah Naeem

    I am trying to stream my HikVision IP camera throough python. I am using cv2.VideoCapture("rtsp_link") which works fine on my Laptop but when I try to run the same python script with same Opencv and FFmpeg version it gives me following error :

    


    Error :

    


    [h264 @ 000002124c7f9a40] missing picture in access unit with size 47
[h264 @ 000002124c7f9a40] no frame!


    


    I have so far tried to run this script on 5 computer devices but it gives the same error. I am using the following python script and my Opencv version is 4.6.0.66 and ffmpeg version 2022-06-20-git-56419428a8-essentials_build-www.gyan.dev :

    


    Python Script :

    


    import cv2

# RTSP stream URL
rtsp_url = "rtsp://username:password@ip_address:port/Streaming/Channels/501"

# Open the RTSP stream
cap = cv2.VideoCapture(rtsp_url)

# Check if the stream was successfully opened
if not cap.isOpened():
    print("Failed to open RTSP stream.")
    exit()

# Read and display frames from the stream
while True:
    # Read a frame from the stream
    ret, frame = cap.read()

    # Check if the frame was successfully read
    if not ret:
        print("Failed to read frame from RTSP stream.")
        break

    # Display the frame
    cv2.imshow("RTSP Stream", frame)

    # Exit if 'q' is pressed
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

# Release the resources
cap.release()
cv2.destroyAllWindows()



    


    Update :

    


    Code runs on a laptop on both wifi and mobile internet (4G) but on other devices rtsp link is accessible only with mobile internet (4G).

    


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