Getting snapshot image from IP Camera via URL

Question

I am trying to get a picture from a Hikvision IP Camera URL which has a a URL that is more or less formed like this:
http://IPaddress:port#/Streaming/channels/1/picture
However as you notice the folder is just named picture with no straight link to an image and its extensions. When I use Picasso library or just normal HttpConnection it fails to get the image / bitmap. How else can I retrieve the image? When I enter the URL in my web browser it loads perfectly and shows me that the picture is .jpeg format.

EDIT
Whenever I try to access the snapshot image using InputStream and Bitmap I get a FileNotFoundException error

Answer 1

The problem as pointed out by Dario was the authentication. Status 401 was being returned and that is why the FileNotFoundException was being thrown.
The answer he gave me had a lot of deprecated methods my Gradle couldnt even get some of the classes.
However I found another way with help from the following forums 1, 2 so I combined with another page for the authentication which I cant find and had the following:

boolean isSaved = false;
         try {
             HttpClient client = new DefaultHttpClient();
             HttpGet request = new HttpGet();
             request.setURI(new URI(AppConst.IMAGE_URL));

             UsernamePasswordCredentials credentials =
                     new UsernamePasswordCredentials(AppConst.USERNAME, AppConst.PASSWORD);
             BasicScheme scheme = new BasicScheme();
             Header authorizationHeader = scheme.authenticate(credentials, request);
             request.addHeader(authorizationHeader);

             HttpResponse response = client.execute(request);
             Log.d("responseType",response!=null? response.getEntity().getContentType().toString():"emptyType");
             Log.d("responseCode", response != null ? String.valueOf(response.getStatusLine().getStatusCode()) : "emptyCode");
             if((response.getStatusLine().getStatusCode()==200) && (response.getEntity()!=null)){//status OK and not empty
                 //save stuff
                 HttpEntity entity = response.getEntity();
                 if (entity != null) {
                     InputStream instream = entity.getContent();
                     String path = APP_DIR+System.currentTimeMillis()+".jpg";
                     FileOutputStream output = new FileOutputStream(path);
                     int bufferSize = 1024;
                     byte[] buffer = new byte[bufferSize];
                     int len = 0;
                     while ((len = instream.read(buffer)) != -1) {
                         output.write(buffer, 0, len);
                     }
                     output.close();
                     Log.d("Snapshot Filename: ", path);
                     isSaved = true;
                 }

             }else{
                 isSaved= false;
             }
         }catch (Exception ex){
             Log.e("saveImageError",ex!=null? ex.getMessage():"error");
         }

Had to add the following line in the gradle under the android section:
useLibrary 'org.apache.http.legacy'