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• Encode Android's frame's .raw file to .png file format using ffmpeg

  12 avril 2017, par Glex

  I used the script from source. What it does is that it reads the frame-buffer information from the mobile (android) phone and save it as a .raw file. It then uses ffmpeg encoder to create .png file. Unfortunately the png image that I am getting is like (attached below). I tried to play with the "-pix_fmt" option used and tried using rgba instead of rgb32 used in that code (none of them work btw). I used another script (ascreenshooter.py) to analyse the header for this raw image to find few image headers. they are listed as :

  version : 1
  bpp : 32
  size : 2088960
  width : 544
  height : 960
  red_offset : 0
  red_length : 8
  blue_offset : 16
  blue_length : 8
  green_offset : 8
  green_length : 8
  alpha_offset : 0
  alpha_length : 8

  Please suggest if it is possible to encode this .raw image file to png format. If it is possible than what ffmpeg options I should use and if some other more efficient tool does exit for this encoding process.

  Sample raw image as requested :

  http://tabak.csc.ncsu.edu/arpit.raw

  

• What encoding settings for BlackBerry HTML5 streaming ?

  27 septembre 2012, par user1441859

  For several days I've been desperately trying to get my videos stream on BlackBerry as well as the major desktop and mobile browser.
  The videos are embedded in this way :

  <video preload="auto" controls="controls">
  
  <source src="url.mp4" type="video/mp4"></source>
  
  <source src="url.ogv" type="video/ogv"></source>
  
  //flash fallback
  
  </video>

  When opening the page in the BB browser the black video frame with the controls appears but when I try to play the video the frame stays black and displays an error message : "Video portion is of an unsupported format".
  Sound does play however.

  By now I have tried H.264 and mpeg4 with AAC audio and both of them don't play properly on my BB (OS version 6.0).
  I've been using ffmpeg to encode the files.

• How to include FFMPEG functions in android code

  4 janvier 2013, par TharakaNirmana

  My aim is to build a video file by combining an audio clip and an image for android.

  Using cygwin, I was able to create the video by combining an image and an audio clip as follows :

  ffmpeg -i allmapeople.mp3 -i Penguins.jpg video_finale.mpg

  But I want this to happen in the mobile device within my eclipse project.

  Please tell me how this should be done.....