Create folder structure in sdcard

File sdCard = Environment.getExternalStorageDirectory();
File dir = new File(sdCard.getAbsolutePath() + "/WWF/WWF Videos");
if (!dir.exists()) {
dir.mkdirs();
}

Date date = new Date();
String fileName =  "/rec" + date.toString().replace(" ", "_").replace(":", "_") + ".mp4";
File file = new File(dir, fileName);