Recherche avancée

Sur d’autres sites (5648)

• 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 ?

  


• PARADISEC catalog for Users

  21 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.

• Get Youtube video original mp4 URL in Googlevideo.com [on hold]

  28 février 2015, par Matan Yedayev

  I want to get the Youtube video original URL in Googlevideo.com

  I want to show you example

  This is Youtube video URL : https://www.youtube.com/watch?v=hzixp8s4pyg

  This is the original mp4 of this video : http://r1---sn-cx1x9-ua8z.googlevideo.com/videoplayback?dur=144.938&signature=D3219628406AA488C697C4616F72503D0B50648F.476AD453606535AA38B6BB91433699DF603CC47D&id=o-AI8eX0_dbEW53bTjkKEJ9LWnFBYwk9D0aFTen4hI4X0A&key=yt5&mime=video/mp4&upn=-vxekmrnk18&ms=au&sver=3&ip=79.178.10.184&pl=24&itag=18&ratebypass=yes&mv=m&sparams=dur,id,initcwndbps,ip,ipbits,itag,mime,mm,ms,mv,pl,ratebypass,source,upn,expire&expire=1425184360&mm=31&source=youtube&mt=1425162701&fexp=901802,905657,907263,916640,927622,937412,9406564,9406664,943917,947225,947240,948124,951703,952302,952605,952612,952620,952901,955301,957201,959701,960602,964703&initcwndbps=1117500&ipbits=0&signature=

  How could I develop program that would give me this mp4 URL ?

  Programs that succes to get this URL : jeckman/Youtube-Downloader at git.

  One more example is : http://ytapi.com/?format=direct&vid=hzixp8s4pyg&itag=18