Remove mp4 meta box created from MediaMuxer

public static void removeMetaBox(String inputFile, String outputFile) {
	try {
		FileInputStream inputStream = new FileInputStream(inputFile);
		byte[] originalBytes = new byte[inputStream.available()];
		if (inputStream.read(originalBytes) == originalBytes.length) {
			System.out.println("read whole file to byte arrays");
		}
		inputStream.close();

		int skipAtPosition = -1;
		int skipSize = 0;
		int moovSizePosition = -1;
		for (int i = 0; i < originalBytes.length; i++) {
			if (originalBytes[i] == MOOV_BOX[0]
					&& originalBytes[i+1] == MOOV_BOX[1]
					&& originalBytes[i+2] == MOOV_BOX[2]
					&& originalBytes[i+3] == MOOV_BOX[3]) {
				moovSizePosition = i - 4;
			}

			if (originalBytes[i] == META_BOX[0]
					&& originalBytes[i+1] == META_BOX[1]
					&& originalBytes[i+2] == META_BOX[2]
					&& originalBytes[i+3] == META_BOX[3]) {
				ByteBuffer buffer = ByteBuffer.allocate(4);
				buffer.put(originalBytes, i-4, 4).rewind();
				skipSize = buffer.asIntBuffer().get();
				skipAtPosition = i - 4;
				break;
			}
		}

		if (skipAtPosition != -1 && skipSize > 0) {
			FileOutputStream outputStream = new FileOutputStream(outputFile);
			System.out.println("find moov box size postion " + moovSizePosition);
			System.out.println("skip at " + skipAtPosition + " with size " + skipSize);
			if (moovSizePosition > 0) {
				ByteBuffer buffer = ByteBuffer.allocate(4);
				buffer.put(originalBytes, moovSizePosition, 4).rewind();
				int moovOldSize = buffer.asIntBuffer().get();
				int moovNewSize = moovOldSize - skipSize;
				buffer.rewind();
				buffer.asIntBuffer().put(moovNewSize).rewind();
				byte[] bytes = new byte[4];
				buffer.get(bytes);
				System.arraycopy(bytes, 0, originalBytes, moovSizePosition, 4);
				System.out.println("change moov box size from " + moovOldSize + " to " + moovNewSize);
			}

			byte[] modifiedBytes = new byte[originalBytes.length - skipSize];
			System.arraycopy(originalBytes, 0, modifiedBytes, 0, skipAtPosition);
			System.out.println("write first chunk " + skipAtPosition);
			System.arraycopy(originalBytes, skipAtPosition + skipSize, modifiedBytes, skipAtPosition, originalBytes.length - skipAtPosition - skipSize);
			System.out.println("write second chunk " + (originalBytes.length - skipAtPosition - skipSize));
			outputStream.write(modifiedBytes);
			outputStream.close();
		} else {
			System.out.println("meta box not found, not necessary to fix");
		}
	} catch (IOException e) {
		e.printStackTrace();
	}
}