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• Store extracted frame name inside an array - ffmpeg

  19 février 2013, par asprin

  I'm a complete newbie to C. I'm from PHP background, but it so happens that the code that I wrote in PHP needs to be converted to C. It was Java at first, but now the requirement is C.

  After going through some tutorials, I got the basics of C and coded the following to run ffmpeg.exe from within a c program

  #include 
  
  #include 
  
  
  
  int main()
  
  {
  
  
  
      char *app = "D:\\ffmpeg\\bin\\ffmpeg.exe -i";
  
      char *input = " D:\\video.mpg";
  
      char *output = " D:\\frames\\image%d.jpg";
  
      char *param = " -r 10";
  
      char str[300];    
  
      snprintf(str, sizeof str, "%s%s%s%s", app, input, param, output);
  
      // str contains "D:\ffmpeg\bin\ffmpeg.exe -i D:\video.mpg -r 10 D:\frames"\image%d.jpg
  
      system(str); // <-- working fine, frames are being extracted
  
      /*
  
          do something here to store each extracted frame in an array
  
          so that the array contains image1.jpg, image2.jpg, image3.jpg...and so on
  
      */
  
      getch();
  
      return 0;
  
  }

  On compiling and running the program, I'm getting the frames in the output folder as expected. The issue is I want to store each frame name inside an array as it gets extracted. So far, I haven't been able to come across a similar issue and so I decided to create a new thread for it. I'm hoping this is possible and would appreciate a nudge in the right direction.

• FFMpeg -re flag and segmenter. If end of file is reached, wait ?

  17 mars 2014, par user2901994

  This question is similar to

  Keep FFMPEG running and waiting for new image files to encode and stream

  FFMpeg's -re flag tells FFMpeg to "read input at native frame rate". This allows me to continuously append to the end of an audio file, as FFMpeg's segmenter runs, continuing to segment the file that is being appended to (for HLS).

  Is there a way to get FFMpeg to wait, instead of exit, even it it reaches the end of the input file ? If say, latency causes FFMpeg to catch up with my appending to the end of the file ?

• Playing Several Videos in a Row From a Browser

  2 août 2014, par user18490

  It’s simple to play 1 video (using HTML5), but my question is, can you play 2 or more videos in a row.

  Basically I’d like to let the user select as many clips as he/she wants, and let him/her play them in the browser (or potentially an external player such as FFplay, but the browser is my goal for now). It’s similar to the concept of playlist in Youtube, ... there should be no cut between two consecutive clips (which is the case right now with playlist in Youtube).

  Is that possible with existing API/tools/techniques ?