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• video compression error in android

  27 avril 2017, par Arpan Sharma

  I am using ffmpeg for video compression in android.I an following this link
  But i always get exit code 1.I am trying to get video from VIDEO CAPTURE intent inside a fragment.
  This is my code

  final Clip clip_in = new Clip(videoPath);
  
          File fileTmp = activity.getCacheDir();
  
          File fileAppRoot = new File(activity.getApplicationInfo().dataDir);
  
  
  
          final Clip clip_out = new Clip(videoPath);
  
          //put flags in clip
  
          clip_out.videoFps = "30";
  
          clip_out.width = 480;
  
          clip_out.height = 320;
  
          clip_out.videoCodec = "libx264";
  
          clip_out.audioCodec = "copy";
  
  
  
          try {
  
              FfmpegController fc = new FfmpegController(getContext(), fileTmp);
  
              fc.processVideo(clip_in, clip_out, false, new ShellUtils.ShellCallback() {
  
  
  
                  @Override
  
                  public void shellOut(String shellLine) {
  
                      System.out.println("MIX> " + shellLine);
  
                  }
  
  
  
                  @Override
  
                  public void processComplete(int exitValue) {
  
                      if (exitValue != 0) {
  
  //                        System.err.println("concat non-zero exit: " + exitValue);
  
                          Log.d("ffmpeg", "Compilation error. FFmpeg failed");
  
                          Toast.makeText(activity, "result: ffmpeg failed", Toast.LENGTH_LONG).show();
  
                      } else {
  
                          if (new File("/storage/emulated/0/Developer/result2.mp4").exists()) {
  
                              Log.d("ffmpeg", "Success file:" + "/storage/emulated/0/Developer/result2.mp4");
  
                          }
  
                      }
  
                  }
  
              });
  
  
  
          } catch (Exception e) {
  
              // TODO Auto-generated catch block
  
              e.printStackTrace();
  
          }

  Any help will be appreciated.

• Time running out for proposals for the Open Video Conference

  1er juin 2010, par Basil Gohar — Announcements, conference, open video conference

  We’re a little late on this one, but better late than never ! Time is running out for proposal submissions to the 2010 Open Video Conference. The submission deadline is June 7th, 2010. So, whether you’re a Theora developer, working on … Read more (...)

• Ramp- Slow Motion in IOS

  26 juin 2013, par 2vision2

  I have to do "ramp-slow motion" in a video file along with audio, in-between some frames and need to store the ramped video as a new video.

  Ref : http://www.youtube.com/watch?v=BJ3_xMGzauk (watch from 0 to 10s)

  From my analysis, I've found that AVFoundation framework can be helpful.

  Ref :
  http://developer.apple.com/library/ios/#documentation/AudioVideo/Conceptual/AVFoundationPG/Articles/00_Introduction.html

  Copy and pasted from the above link :

  "
  Editing
  AV Foundation uses compositions to create new assets from existing pieces of media (typically, one or more video and audio tracks). You use a mutable composition to add and remove tracks, and adjust their temporal orderings. You can also set the relative volumes and ramping of audio tracks ; and set the opacity, and opacity ramps, of video tracks. A composition is an assemblage of pieces of media held in memory. When you export a composition using an export session, it's collapsed to a file.
  On iOS 4.1 and later, you can also create an asset from media such as sample buffers or still images using an asset writer.

  "

  Questions :
  Can I "ramp-slow mote" the video/audio file using the AVFoundation framework ? Or Is there any other package available ? If i want to handle audio and video separately, please guide me how to do ?