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• Start using ffmpeg Android with NDK - Windows

  26 septembre 2012, par idish

  I'm new to ffmpeg and I'm trying to compile it/use it's libraries in my Android App with Android NDK. I have everything ready : the NDK, the ffmpeg source, but I've been searching the web for long time trying to compile some ffmpeg into my app.
  I found this answer, but I don't really understand the instructions, I repeat, I'm using Windows, not a Linux based operating system. Is it that hard to make ffmpeg work in my android app ? Could anyone please give me instructions to get it work ?

  Thank you.

• create video chunks with giving start and end time using ffmpeg and play those chunks sequentially with expiry time for each chunk using java

  4 octobre 2018, par JAVA Coder

  I have done like this I found it from the given link Just modified the code for start and end time and hard coded the times.
  Split video into smaller timed segments in Java

  @RequestMapping(value="/playVideo",method = RequestMethod.GET)
  
  @ResponseBody
  
  public void playVideo() {
  
      System.out.println("controller is working");
  
      int videoDurationSecs = 1800 ;
  
      int numberOfChunks = 5;//dynamically we can define according to video duration
  
       int chunkSize = videoDurationSecs/(numberOfChunks);
  
          int startSecs = 0;
  
          for (int i=0; i/*******Create video chunk*******//
  
  
  
              String startTime = convertSecsToTimeString(startSecs);
  
              int endSecs = startSecs+chunkSize;
  
              startSecs = endSecs+1; 
  
              if (endSecs > videoDurationSecs) {
  
                  //**make sure rounding does not mean we go beyond end of video**//
  
                  endSecs = videoDurationSecs;
  
              }
  
              String endTime = convertSecsToTimeString(endSecs);
  
  
  
              System.out.println("start time for-------------------->>>> "+startTime);
  
              System.out.println("end time for------------------->>>> "+endTime);
  
  
  
              /*
  
               * how to do this means send times for chunk and 
  
               * getting chunks and play them one by one like one video 
  
               * with expiry time for each
  
               */
  
  
  
  
  
              //Call ffmpeg to create this chunk of the video using a ffmpeg wrapper
  
              /*String argv[] = {"ffmpeg", "-i", videoPath, 
  
                      "-ss",startTime, "-t", endTime,
  
                      "-c","copy", segmentVideoPath[i]};
  
              int ffmpegWrapperReturnCode = ffmpegWrapper(argv);*/
  
          }
  
  
  
  
  
  }
  
  
  
  private String convertSecsToTimeString(int timeSeconds) {
  
      //Convert number of seconds into hours:mins:seconds string
  
      int hours = timeSeconds / 3600;
  
      int mins = (timeSeconds % 3600) / 60;
  
      int secs = timeSeconds % 60;
  
      String timeString = String.format("%02d:%02d:%02d", hours, mins, secs);
  
      return timeString;
  
  }

  }

• ffmpeg for video transcription [closed]

  22 juin 2023, par TSz

  Does ffmpeg have capabilities to generate a transcription from a video or an audio file in .srt format or other ? Task is to create subtitles for YT videos (30-60min long). Timestamps and duration would be important so the text is synchronized to the audio. Languages english and hungarian

  


  no code was tried yet