public static void method(HttpServletRequest request, HttpServletResponse response, String channel) throws InterruptedException, IOException {

                String url = "http://85.229.9.206:9981/stream/channel/" + channel;

                System.out.println(url);

                Path in    = Paths.get(url);

                Path out   = Paths.get("/momomo/Generated/Tv/" + channel + ".mp4");

                Files.deleteIfExists(out);

                ProcessBuilder builder = new ProcessBuilder(
                        "ffmpeg",
                        "-i", in.toString(),
                        "-y",
                        // "-s", "360x480", // stripped the extraneous "-1"
                        "-vcodec", "libx264",
                        out.toString()
                );

                builder.redirectErrorStream (true);
                builder.redirectOutput      (out.toFile());

                final Process process = builder.start();

                response.setContentType("application/octet-stream");
                response.setHeader("Content-Type", "video/mp4");
                response.setHeader  ("Content-Disposition", "attachment;filename=filename.mp4");

                // boolean code = process.waitFor(1000, TimeUnit.MILLISECONDS);

                int BUFFER_SIZE = 512;
                try (
                        BufferedInputStream  input  = new BufferedInputStream(new FileInputStream(out.toFile()), 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);
                        }
                }
        }