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• How trim a video using FFMPEG in android

  26 avril 2016, par Webiarch

  I got

  Fatal signal 11(SIGSEGV), code 1, fault addr 0x5 in tid 5823 (e.mypc.videocut)

  When I try to debug the app crashes when I’m reading this line :

  vk.run(complexCommand, workFolder, getApplicationContext());

  VideoTrim Screen :

  PowerManager powerManager = (PowerManager)VideoCut.this.getSystemService(Activity.POWER_SERVICE);
  
  PowerManager.WakeLock wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "VK_LOCK");
  
  Log.d(Prefs.TAG, "Acquire wake lock");
  
  wakeLock.acquire();
  
  
  
  LoadJNI vk = new LoadJNI();
  
  try {
  
      String workFolder=  getApplicationContext().getFilesDir().getAbsolutePath();
  
      Log.d("workfolder",workFolder);
  
      String[] complexCommand = {"ffmpeg", "-i", path, "-ss 00:00:03 -t 00:00:08 -async 1", "/storage/emulated/0/VID.mp4"};
  
  
  
      // String commandStr = "ffmpeg -i "+path +"-ss 00:00:03 -t 00:00:08 -async 1 /storage/emulated/0/DCIM/Camera/VID.mp4";
  
      vk.run(complexCommand, workFolder, getApplicationContext());
  
  
  
      Log.i("test", "ffmpeg4android finished successfully");
  
      GeneralUtils.copyFileToFolder(vkLogPath, demoVideoFolder);
  
  
  
  } catch (Throwable e) {
  
      Log.e("test", "vk run exception.", e);
  
  
  
  } finally {
  
      if (wakeLock.isHeld()) {
  
          wakeLock.release();
  
          Log.i(Prefs.TAG, "Wake lock released");
  
  
  
      } else {
  
          Log.i(Prefs.TAG, "Wake lock is already released, doing nothing");
  
      }
  
  }

• downloading and concatenating parts of videos from youtube

  17 octobre 2018, par amit

  I’m trying to create a video quiz, that will contain small parts of other videos, concatenated together (with the purpose, that people will identify from where these short snips are taken from).

  For this purpose I created a file that contain the URL of the video, the starting time of the "snip", and its length. for example :

  https://www.youtube.com/watch?v=5-j6LLkpQYY   00:00   01:00
  
  https://www.youtube.com/watch?v=b-DqO_D1g1g   14:44   01:20
  
  https://www.youtube.com/watch?v=DPAgWKseVhg   12:53   01:00

  Meaning that the first part should take the video from the first URL from its beginning and last for a minute, the second part should be taken from the second URL starting from 14:44 (minutes:seconds) and last one minute and 20 seconds and so forth.

  Then all these parts should be concatenated to a single video.

  I’m trying to write a script (I use ubuntu and fluent in several scripting languages) that does that, and I tried to use youtube-dl command line package and ffmpeg, but I couldn’t find the right options to achieve what I need.

  Any suggestions will be appreciated.

• PHP Compress video from Gopro, best way ?

  11 janvier 2013, par Mepps

  I develop a website for hosting videos from GoPro (mp4 files often in HD)

  I would like how to compress video after upload.
  Acutally, on website you can upload video and watch it but she are so fat and its not possible to watch it ...

  I see ffmpeg-php but i don't see how to compress with her API.

  the best way, it's compress to unique format like flv ? or to ogv/webM/mp4 to used html 5 ?

  Any ideas ?

  Thanks a lot,

  Regards