Rolling your own screen video capture in Android apps

vidcap

/**
 * Use this code in the onDraw function of your View class. This only works if you have a custom
 * view that extends View or one of its descendants. (In my project I extend SurfaceView.)
 */
try {
    getDrawingCache(true).compress(Bitmap.CompressFormat.JPEG, 75, new FileOutputStream("/sdcard/screen-"+ String.format("%04d",frame) +".jpg"));
    frame++;
} catch (Exception e) {
    Log.e("Error--------->", e.toString());
}

/**
 * This goes out in your class file
 */
public int frame=0;

/**
 * To use this to make a video:
 * 1) Run your app, to generate the frames of video
 * 2) Use the pull command of adb to download all frames of video
 * 3) Use ffmpeg to stitch these together into a video. Example command:
 *    ffmpeg -r 30 -i screen-%04d.jpg movie.mp4
 *
 * IMPORTANT FAQ!
 * Your files MUST be numbered consecutively, starting with screen-0000.jpg. You CANNOT
 * skip a number, or leave out the padding zeroes at the front. You MUST start with 0000.
 * Otherwise ffmpeg chokes, or stops encoding earlier than you expect.
 */