How to stream music from your router to your android devices

Posted by Raffael on 04/21/2013 Posted in News & Apps, Personal stuff, Tutorials Tagged Android, ES File Explorer streaming, FrtizBox, stream from router to android, stream music to android

These days you will get faced with the term “cloud” everywhere. I am, for my part, not really a fan of cloud streaming because nearly every solution that I tried did not work without complications.
But in recent weeks, I got friend with a streaming solution within my appartment’s walls. And this solution is what I want to introduce to you today.
At first some information concerning the initial situation. I confess that I am a passionate fan of audio dramas. (I’m really addicted to “The three Investigators”. Some of my friends blaspheme, that I were too old for it, but take it from me, you’re never too old for The Three Investigator because it’s cult!)
However, normally I like to listen to another episode every evening. But to copy every evening another […]

How to create video files in C# (from single images)

Posted by Raffael on 04/17/201311/04/2017 Posted in C#.Net, Tutorials Tagged .NET, C#, c# create video file, c# create video from images, c# video, c# video creation, c# video tutorial, csharp create video

create videos in csharp Today there is again a bit of C# code. I’m writing about how you can create video files in C # from individual images or bitmaps. Using the AForge library, which I have used in the already in the C# webcam tutorial, this is going to be relatively simple.
Preparations
For the following tutorial you need the AForge.Video.FFMPEG.dll library and its FFMPEG libraries. Both can be found by clicking the below link. On the downloadpage you have to select that .zip-file, which contains “(libs only)” in it’s filename.

AForge Libs Download

Now open your Visual Studio or an alternative program, that you want to use to write your program. (For the following tutorial I’m using Visual Studio.)
Create a project
Next you create a new project, I decided on a WinForms project, and wait until the Visual Studio has […]

Mastering OpenSSH – Part 2: How to secure OpenSSH

Posted by Raffael on 04/09/201305/01/2013 Posted in Linux, Tutorials Tagged change openssh port, how to secure openssh, openssh, openssh disable root login, openssh security, openssh security advisory, openssh security vulnerabilities

Now that we have installed the OpenSSH server on the Linux box and thereafter successfully connected using Putty, using SSH under Linux and using OpenSSH for Windows, we should go in this (second) part of the series on how to basically secure the OpenSSH server.
Change default port
First, we should change the port on which the server is running OpenSSH. But why? This is a classic case of security through obscurity. Theoretically this does not change the level of security. Practically, however, you can recognize that the number of attacks to the SSH server falls. This is because many attackers only scan on port 22, the default SSH port. If we change the port, we get out of the scanners scope. Sure, someone who has specifically chosen our server as an attack object, can still perform a port scan, but nevertheless it’s worth the effort, to exclude the just mentioned “haphazard” […]

Performance test: rotate images in C# – Bitmap.RotateFlip vs.Graphics-Object

Posted by Raffael on 03/12/2013 Posted in C#.Net Tagged BitmapRotateFlip, C#, C# benchmark, C# GDI+, c# performance test, C# rotate performance

During my search for a function to rotate images in C#, I came across the following post on dotnet-snippets.de: rotate images with C #.
Besides the method presented in the article there were 2 other approaches presented in the comments and so the question was: which method is the fastest of them.
Since this also awakened my interest, I wrote a small test application which checks every of those functions for their performance.
After a few test runs, it became clear that the original solution from the above mentioned post was not suitable because it created a new bitmap every run, what eats tons of memory. Thus, the following function has been excluded from the tests.

public Bitmap rotateImage(Bitmap bitmap, float angle)
{
Bitmap returnBitmap = new Bitmap(bitmap.Width, bitmap.Height);
Graphics graphics = Graphics.FromImage(returnBitmap);
graphics.TranslateTransform((float)bitmap.Width / 2, (float)bitmap.Height / 2);
[…]