Is there any tutorial or a c# library which which help me to accomplish the following
now steps 1) and 4) I have implemented but could not find a good c# library to accomplish 3) and 4)
I looked up the ffmpeg
library but could not find a good C# wrapper to accomplish the requirements.
ffmpeg is a very powerful application and I have used it many times, even from C#. You don't need a C# wrapper library. All you have to do is execute the ffmpeg commands from C# using:
System.Diagnostics.Process.Start(string fileName, string arguments);
Or use System.Diagnostics.ProcessStartInfo
to redirect standard output if you need to.
This article explains how to use System.Diagnostics
to execute synchronous and asynchronous commands, etc.
http://www.codeproject.com/KB/cs/Execute_Command_in_CSharp.aspx
Here's a simple example of how to cut a video file down to its first 4 minutes using ffmpeg from C#.
using System.Diagnostics
Process.Start("ffmpeg.exe",
"-sameq -t 240 -i InputVideoFile.avi OutputVideoFile.avi");
Here's a SO example of how to use System.Diagnostics.ProcessStartInfo
C# and FFmpeg preferably without shell commands?
There are lots of online resources that explain all of ffmpeg's features and how to use them, just search.