Unable to do low-level decoding of video on Android 4.2 without using media extractor

try {
  ByteArrayOutputStream baos = new ByteArrayOutputStream();
  FileInputStream fis = new FileInputStream(new File(
  "ur file path"));

  byte[] buf = new byte[1024];
  int n;
  while (-1 != (n = fis.read(buf))) {
  baos.write(buf, 0, n);
  }

  byte[] videoBytes = baos.toByteArray();

  // use this videoBytes which is low level of original video 

} catch (Exception e) {
  e.printStackTrace();
}