Retrieve thumbnail from video (Titanium) http://abcoder.com/titanium/retrieve-thumbnail-from-video-titanium

Videothumbnail.js

// media is the video url or the video file blob source
// cb - callback function to receive the thumb image and video duration in seconds
// size - dimension of one side of the required thumb (the other side will be calculated based on aspect ratio)
function getVideoThumb = function(media, cb, size) {
  var player = Titanium.Media.createVideoPlayer({
    autoplay : false,
    media : media,
    scalingMode : Ti.Media.VIDEO_SCALING_MODE_FILL
  });
 
  setTimeout(function() {
    tryToRetrieveVideoThumb(player, cb, size);
  }, 1000);
};
 
function tryToRetrieveVideoThumb(player, cb, size) {
  if (player.naturalSize.width == 0) {
    setTimeout(function() {
      tryToRetrieveVideoThumb(player, cb);
    }, 1000);
    return;
  }
 
  player.width = player.naturalSize.width;
  player.height = player.naturalSize.height;
  var imageBlob = player.thumbnailImageAtTime(1.0, Ti.Media.VIDEO_TIME_OPTION_EXACT);
  if (size) {
    var img = _resizePhoto(imageBlob, size), 
 
    thumbView = Ti.UI.createView({
      width : img.w,
      height : img.h,
      backgroundImage : img.media
    }), playIcon = Ti.UI.createImageView({
      image : '/img/video_icon.png',
      height : 20,
      width : 20
    });
    thumbView.add(playIcon);
    cb(thumbView.toImage(), player.duration / 1000);
  } else
    cb(imageBlob, player.duration / 1000);
}
 
 
function _resizePhoto(media, size) {
  var oW = media.width, oH = media.height, w = oW >= oH ? Math.round(Math.min(size, oW)) : Math.round(Math.min(oW * (size / oH), oW)), h = oW <= oH ? Math.round(Math.min(size, oH)) : Math.round(Math.min(oH * (size / oW), oH));
  return {
    media : media.imageAsResized(w, h),
    w : w,
    h : h
  };
};