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• I can't seem to install opencv2.4.13 for Python3.4 on Mac El Capitan

  11 décembre 2020, par user4351838

  I have already tried : https://www.youtube.com/watch?v=U49CVY8yOxw.

  


  So I download opencv2.4.13, create the build folder, open cmake, configure, generate and then go to terminal and type in make.

  


  I get this :

  


  Richie's Macbook Air:build Richie$ make
[  2%] Built target zlib
[  6%] Built target libtiff
[ 10%] Built target libjpeg
[ 14%] Built target libjasper
[ 16%] Built target libpng
[ 23%] Built target IlmImf
[ 26%] Built target opencv_core
[ 31%] Built target opencv_imgproc
[ 32%] Built target opencv_video
[ 32%] Built target opencv_flann
[ 32%] Building CXX object modules/highgui/CMakeFiles/opencv_highgui.dir/src/cap_ffmpeg.cpp.o
In file included from /Users/Richie/Downloads/opencv-2.4.13/modules/highgui/src/cap_ffmpeg.cpp:45:
/Users/Richie/Downloads/opencv-2.4.13/modules/highgui/src/cap_ffmpeg_impl.hpp:71:6: error: 
      "libswscale is necessary to build the newer OpenCV ffmpeg wrapper"
    #error "libswscale is necessary to build the newer OpenCV ffmpeg wrapper"
     ^
/Users/Richie/Downloads/opencv-2.4.13/modules/highgui/src/cap_ffmpeg_impl.hpp:481:9: error: 
      use of undeclared identifier 'sws_freeContext'
        sws_freeContext(img_convert_ctx);
        ^
/Users/Richie/Downloads/opencv-2.4.13/modules/highgui/src/cap_ffmpeg_impl.hpp:965:17: error: 
      use of undeclared identifier 'SWS_BICUBIC'
                SWS_BICUBIC,
                ^
/Users/Richie/Downloads/opencv-2.4.13/modules/highgui/src/cap_ffmpeg_impl.hpp:998:5: error: 
      use of undeclared identifier 'sws_scale'
    sws_scale(
    ^
/Users/Richie/Downloads/opencv-2.4.13/modules/highgui/src/cap_ffmpeg_impl.hpp:1639:46: error: 
      use of undeclared identifier 'SWS_BICUBIC'
                                             SWS_BICUBIC,
                                             ^
/Users/Richie/Downloads/opencv-2.4.13/modules/highgui/src/cap_ffmpeg_impl.hpp:1645:14: error: 
      use of undeclared identifier 'sws_scale'
        if ( sws_scale(img_convert_ctx, input_picture->data,
             ^
/Users/Richie/Downloads/opencv-2.4.13/modules/highgui/src/cap_ffmpeg_impl.hpp:1693:9: error: 
      use of undeclared identifier 'sws_freeContext'
        sws_freeContext(img_convert_ctx);
        ^
/Users/Richie/Downloads/opencv-2.4.13/modules/highgui/src/cap_ffmpeg_impl.hpp:2290:9: warning: 
      ignoring return value of function declared with warn_unused_result
      attribute [-Wunused-result]
        avformat_write_header(oc_, NULL);
        ^~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~
1 warning and 7 errors generated.
make[2]: *** [modules/highgui/CMakeFiles/opencv_highgui.dir/src/cap_ffmpeg.cpp.o] Error 1
make[1]: *** [modules/highgui/CMakeFiles/opencv_highgui.dir/all] Error 2
make: *** [all] Error 2
Richie's Macbook Air:build Richie$ 


  


  From what I can see, it says

  


  "libswscale is necessary to build the newer OpenCV ffmpeg wrapper"


  


  I do have ffmpeg installed (using brew). Does anyone know ?

  


• Recapping WebM’s First Week

  25 mai 2010, par noreply@blogger.com (John Luther) — webm, vp8, vorbis

  The WebM project launched last Wednesday with broad industry backing (watch video of the announcement). The list of supporters keeps growing with new additions such as the popular VLC media player, Miro Video Converter, HeyWatch cloud encoding platform, and videantis programmable processor platform. We’re also happy to see that future versions of IE will support playback of VP8 when the user has installed the codec.

  Our announcement sparked discussions in the community around the design and quality of our developer release. We’ve done extensive testing of VP8 and know that the codec can match or exceed the quality of other leading codecs. Starting this week, the engineers behind WebM will post frequently to this blog with details on how to make optimal use of its VP8 video codec and Vorbis audio codec. We are confident that the open development model will bring additional improvements that will further optimize WebM. In fact, the power of open development is already visible, with developers submitting patches and the folks at Flumotion enabling live streaming support in their product just three days after the project was launched.

  Keep an eye on this blog for regular updates on the adoption and development of WebM. To participate in the conversation or to ask questions of the WebM team, please join our discussion group.

  John Luther
  Product Manager, Google

  

• PARADISEC catalog for Users

  29 août, par silvia

  This screencast shows how a user of the PARADISEC catalog logs in and explores the collections, items and files that the archive contains.

  Category : 2
  Uploaded by : Silvia Pfeiffer
  Hosted : youtube

  The post PARADISEC catalog for Users first appeared on ginger’s thoughts.