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• ffmpeg does not get installed on windows 32 bit

  13 octobre 2016, par Simer

  I have installed ffmpeg on windows 32 bit and I got following error when I try executing ffmpeg.exe therefore it is not installed and neither shows up in my localhost :

  the procedure entry point could not be located in the dynamic link
  library kernel32.dll

  Where as it get installed on 64 bit easily.
  I am downloading ffmpeg from -zeranoe. I have tried with static and shared builds.

• OpenCV VideoCapture not read any video File in Windows 7 32bit

  3 octobre 2014, par The_Maxtor

  i try to read .avi or .mpeg video file using VideoCapture class of OpenCV2.4.8 in C++ using QtCreator and CMake 2.8.12.1.
  Before built OpenCV, i download FFMPEG static version and put them into Program Files directory, i add their path into enviroments variable PATH, then i download K Lite Codec Pack Full, install it and only then i built OpenCV with CMAKE and mingw provide by Qt. After installation i add to PATH the right path of built OpenCV.
  The stream from webcam works fine, but the stream from a video file doesn’t work. I tried on Windows 7 32bit and Windows 8 64bit.
  Here is the code

  #include <opencv2></opencv2>imgproc/imgproc.hpp>
  
  #include <opencv2></opencv2>highgui/highgui.hpp>
  
  #include <opencv2></opencv2>core/core.hpp>
  
  #include "opencv2/opencv.hpp"
  
  cv::Mat img;
  
  cv::VideoCapture cap("Prova.avi");
  
  std::cerr &lt;&lt; cap.isOpened() &lt;&lt; std::endl;
  
  while(cap.read(img)){
  
      cv::imshow("Opencv", img);
  
      cv::waitKey(33);
  
  }

  The same code works on Ubuntu 12.04 with the same version of OpenCV and with the ffmpeg build by myself.
  What is wrong ?

• Windows Batch - Change the beginning of a path but keep the rest

  21 juin 2014, par o_ren

  I’m running FFMPEG for video encoding.
  I have a batch file which will encode files you drop on it, keeping the file’s original name and copy the encoded files to a specific directory.
  I would like that script to "know" the original’s file path and copy the encoded file to a path relative to it, meaning :
  original file dropped on batch file is in C :\some\folder\show\season\episode\file.mov
  encoded file should be encoded to D :\different\directory\show\season\episode\file.mp4
  The part of the path up until \show is fixed.

  This is what I have so far :
  

  @echo on
  
  
  
  set count=0
  
  for %%a in (%*) do (<br />
  
    if exist %%a (
  
  
  
          md \\specific\path\"%%~na"
  
  
  
          %MYFILES%\ffmpeg.exe -i "%%~a" -vcodec libx264 -preset medium -vprofile baseline -level 3.0 -b 500k -vf scale=640:-1 -acodec aac -strict -2 -ac 2 -ab 64k -ar 48000 "%%~na_500.mp4"
  
          copy "%%~na_500.mp4" "\\specific\path\"%%~na"\%%~na_500.mp4"
  
          copy "%%~na_500.mp4" "\\specific\path\"%%~na"\%%~na_500.mp4"
  
          del "%%~na_500.mp4"

  set /a count+=1

  ) else (
  echo Skipping non-existent %% a
  
  

  Thank you,
  Oren