View difference between Paste ID: JPEEE48u and QNiiRLjx

 Download video file:
 
 http://www.filedropper.com/backup_11
 
 Call:
 
 serve(response, Paths.get("/path/to/" + "backup" + ".mp4").toFile());
 
 Method:
 
 public static void serve(HttpServletResponse response, File file) throws IOException {
                 response.setContentType("application/octet-stream");
                 // response.setHeader  ("Content-Disposition", "attachment;filename=filename.mp4");
                 response.setHeader("Content-Type", "video/mp4");
 
                 int BUFFER_SIZE = 512;
                 try (
                         BufferedInputStream input  = new BufferedInputStream(new FileInputStream(file), BUFFER_SIZE);
                         BufferedOutputStream output = new BufferedOutputStream(response.getOutputStream(), BUFFER_SIZE);
                 ) {
                         byte[] bytes = new byte[BUFFER_SIZE];
                         int length;
                         while ((length = input.read(bytes)) > 0) {
                                 output.write(bytes, 0, length);
                         }
                 }
         }