save h264 to disk

private Context mContext;
    public void setContext(Context context) {
        mContext = context;
        createfile();
    }
    
    private BufferedOutputStream outputStream;
    private void createfile() {
        String path = Environment.getExternalStorageDirectory().getAbsolutePath() + SystemClock.elapsedRealtime() + ".h264";
        File file = null;
        if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
            File file1 = mContext.getApplicationContext().getExternalCacheDir();
            if (file1 != null) {
                file1 = FileUtils.getFile(file1, "test");
                file1.mkdirs();
                file = FileUtils.getFile(file1, 1 + ".h264");
                Log.e("evan", "filepateh=" + file.getAbsolutePath());
            }
        }

        if (file.exists()) {
            file.delete();
        }

        try {
            outputStream = new BufferedOutputStream(new FileOutputStream(file));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    
    try {
            Log.e("evan","onVideoPacket. packet = "+packet.size);
                outputStream.write(packet.data, 0, packet.size);
            } catch (IOException e) {
                e.printStackTrace();
            }