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• Android : How to record the mobile screen without using USB cable ?

  21 juin 2012, par Rajesh

  I want to build an application which would record my screen activities and would store them in a video file.

  1) I need to take the screenshots of my screen movements at periodic intervals and store them on the SD card.

  2) How can I create the video from the images which are already available on my SD card. I have tried with the FFMPEG. But I have encountered a few problems I don't know how to solve. The truth is I don't know the program to convert them.

  3 ) Is it possible to show the picture in my camera ?? That means if a user opens the camera from my app, it should show the pictures which are available on the SD card. If so, please advice me.

  EDIT : I have made a sample which can capable of taking 7 screen shots per second.

  Thanks,
  Rajesh .

• Android : Playing MP3 files with AudioTrack using ffmpeg

  16 juillet 2012, par Vipul Purohit

  I have integrated ffmpeg lib in my project and I can also get the information of media files. But now i have to play mp3 files using AudioTrack class in android using ffmpeg lib.

  For this I have to pass byte buffer to AudioTrack but I dont know how to get byte buffer from ffmpeg and use it with AudioTrack. I also want to play file instantly without delay.

  Here is my audio track code in java :

  AudioTrack track;
  
  bufferSize = AudioTrack.getMinBufferSize(44100,AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT)
  
  track = new AudioTrack(AudioManager.STREAM_MUSIC, 44100, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT, bufferSize, mode);
  
  
  
  //Play audio clip
  
  track.play();
  
  
  
  while(stream_is_over){
  
  //Copy the decoded raw buffer from native code to "buffer" .....
  
  ............
  
  track.write(buffer, 0, readBytes);
  
  }

  Can anyone please give me the working code to play mp3 files with audio track. I have searched a lot but haven't find any correct answer.

• Can red5 be used instead of FFmpeg in Android ?

  3 septembre 2012, par Balwant Kumar Singh

  Can I use red5 as my native library instead of FFmpeg for Android ? I was told that FFmpeg resides inside red5. I'm not able to see the documentation of red5 because the red5 server is down.