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• Apply a command for each file in a folder using Windows batch script

  29 avril 2014, par Dobbo1989

  I am trying to figure out how to create a script that will take all video files in a folder videos*.* and then use ffmpeg on each one and output the files to converted*.mp4 where the filenames are the same.

  However, I can’t figure out how to get the for loop working, so that I can extract the name and extension type of file I am processing.

  for %%f IN (videos\*.*) DO (convert.bat %%f)

  convert.bat

  ffmpeg.exe -i %1 -f mp4 converted\%~n.mp4

  I have tried both with and without double quotes. However, it won’t recognise the file.

• Enable inline asm in intel compiler on windows.

  3 mai 2014, par Matt Oliver

  Enable inline asm in intel compiler on windows.
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] configure

• optimizing ffmpeg in windows platform for processing with web-cam

  22 août 2013, par user2320537

  I have to develop a tool in java that will capture frames from webcam, Now what I have done for that is, I have used Runtime class to run ffmpeg and other commands, when it starts capturing frames from my web-cam,
  I am using following method for that.

  public class FFMPEGClass {
  
  
  
      private String ffmpegExeLocation, line;
  
      private final String FRAME_DIGITS = "010";
  
  
  
      public FFMPEGClass(String capturingDName, String outputImagesLocation, int framesPerSecond) {
  
          ffmpegExeLocation = System.getProperty("user.dir") + "\\bin\\";
  
          System.out.println(ffmpegExeLocation);
  
          try {            
  
              System.out.println(ffmpegExeLocation + "ffmpeg -t 100000 "
  
                      + "-f vfwcap -s 640x480 -i 0 -r 1/" + framesPerSecond + " -f image2 " + outputImagesLocation + "\\camera%"+FRAME_DIGITS+"d.jpg");
  
              Process pp = Runtime.getRuntime().exec(ffmpegExeLocation + "ffmpeg -t 100000 "
  
                      + "-f vfwcap -s 640x480 -i 0 -r 1/" + framesPerSecond + " -f image2 " + outputImagesLocation + "\\camera%"+FRAME_DIGITS+"d.jpg");
  
              BufferedReader br = new BufferedReader(new InputStreamReader(pp.getErrorStream()));
  
              while((line = br.readLine()) != null){
  
                   System.out.println(line);
  
              }
  
          } catch (Exception ex) {
  
              ex.printStackTrace();
  
          }
  
      }
  
  }

  In my case capturingDName is USB2.0 UVC VGA WebCam
  outputImagesLocation is e :\myfolder\frames and
  framesPerSecond is 10

  This code works well but it is unable to capture frames efficiently, In other words I want to say that its processing is very slow, can anyone please tell that how can I optimize it so that it can capture frames very fastly.

  I have Intel Core i3 processor with 6 GB of RAM

  I have already checked many answers from google and stackoverflow but these are not working in my case