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Execute jar file in c#

I have a problem with executing the jar file in c#.
This jar file is epubcheck.jar
here is my code to run the file
public string IdpfValidateEpub(string epub)
{
try
{
string result = null;
string epubCheckPath = System.IO.Path.Combine(System.IO.Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "epubcheck.jar");
string arguments = "java -jar" + " \"" + epubCheckPath + "\"" + " \"" + epub + "\"";
System.Diagnostics.Process pProcess = new System.Diagnostics.Process();
//strCommand is path and file name of command to run
pProcess.StartInfo.FileName = #"cmd.exe";
//strCommandParameters are parameters to pass to program
pProcess.StartInfo.Arguments = arguments;
Debug.WriteLine("arguments: " + pProcess.StartInfo.Arguments);
pProcess.StartInfo.UseShellExecute = false;
pProcess.StartInfo.CreateNoWindow = false;
//Set output of program to be written to process output stream
pProcess.StartInfo.RedirectStandardOutput = true;
//Start the process
pProcess.Start();
//Get program output
result = pProcess.StandardOutput.ReadToEnd();
//Wait for process to finish
pProcess.WaitForExit();
return result;
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
Debug.WriteLine(ex.StackTrace);
throw ex;
}
}
But the program is not running at all. I also set the property to show the window. So i can see if its running or not. But it only shows the command prompt like this
I also printed the arguments i passed in the System.Diagnostics.Process in order to check if the arguments are correct.
After the program printed the arguments. i just copied it and paste in the command prompt. And the program works as expected. But why does it doesn't work in my c# code?
Thank you so much.

Java is a program in its own right, so you don't actually need cmd.exe to run it.
Change your arguments to the following so that you're passing the arguments for java:
string arguments = "-jar" + " \"" + epubCheckPath + "\"" + " \"" + epub + "\"";
And then simply start java instead of cmd:
pProcess.StartInfo.FileName = #"java";

merge two mp4 video as single video using ffmpeg in C# is not working

For the last 4 hours I've been trying to combine 2 .mp4 files into one using ffmpeg in C#.
****My code is below:****
public void MergeFiles(string strFile)
{
string strParam;
string Path_FFMPEG = Server.MapPath("~/Video_Clips/ffmpeg.exe");
//Merging two videos
String video1 = Server.MapPath("~/Videos/fast1.mp4");
String video2 = Server.MapPath("~/Videos/fast2.mp4");
String file = Server.MapPath("~/Videos/input.txt");
String strResult = Server.MapPath("~/Videos/ConvertedFiles/Output.mp4");
strParam = " -f concat -i " + file + " -c copy " + strResult;
process(Path_FFMPEG, strParam);
}
public void process(string Path_FFMPEG, string strParam)
{
try
{
Process ffmpeg = new Process();
ProcessStartInfo ffmpeg_StartInfo = new ProcessStartInfo(Path_FFMPEG, strParam);
ffmpeg_StartInfo.UseShellExecute = false;
ffmpeg_StartInfo.RedirectStandardError = true;
ffmpeg_StartInfo.RedirectStandardOutput = true;
ffmpeg.StartInfo = ffmpeg_StartInfo;
ffmpeg_StartInfo.CreateNoWindow = true;
ffmpeg.EnableRaisingEvents = true;
ffmpeg.Start();
ffmpeg.WaitForExit(30000);
//ffmpeg.WaitForExit();
ffmpeg.Close();
ffmpeg.Dispose();
ffmpeg = null;
}
catch (Exception ex)
{
}
}
My input.txt file is below:
List of Files to Join (Comment)
file 'D:/Kapil_WorkSpace/ExtraProjectSource/VideoDemo/VideoDemo/Videos/fast1.mp4'
file 'D:/Kapil_WorkSpace/ExtraProjectSource/VideoDemo/VideoDemo/Videos/fast2.mp4'
Please help. Thanks in advance.

Finally, i found answer for my own question.
I have used ffmpeg.exe file and there is for 32 bit system and i am using 64 bit.
So, problem is in ffmpeg build file. I have download new 64 bit build for that.
And another issue is path of videos in input.txt file are wrong.So, made it correctly and it's work completely. But it take too much time for some video and some video is work faster. I don't know what is reason for that.
Thanks all

How to create a RAM Disk with imdisk and C#?

I'm trying to create a RAM Directory via imdisk in C#. Since the cmd command is something like: imdisk -a -s 512M -m X: -p "/fs:ntfs /q /y"
I looked up how to process cmd commands with C# and found several hints regarding ProcessStartInfo(). This class works almost the way I intend it to, but since imdisk needs administrator priviliges I'm kinda stuck. Even though the code block is executed without exceptions, I don't see any new devices within the Windows Explorer.
try
{
string initializeDisk = "imdisk -a ";
string imdiskSize = "-s 1024M ";
string mountPoint = "-m "+ MountPoint + " ";
string formatHdd = "-p '/fs:ntfs /q /y' ";
SecureString password = new SecureString();
password.AppendChar('0');
password.AppendChar('8');
password.AppendChar('1');
password.AppendChar('5');
ProcessStartInfo procStartInfo = new ProcessStartInfo();
procStartInfo.UseShellExecute = false;
procStartInfo.CreateNoWindow = true;
procStartInfo.RedirectStandardError = true;
procStartInfo.FileName = "cmd";
procStartInfo.Verb = "runas";
procStartInfo.UserName = "Admin";
procStartInfo.Password = password;
procStartInfo.Arguments = initializeDisk + imdiskSize + mountPoint + formatHdd;
Process.Start(procStartInfo);
catch (Exception objException)
{
Console.WriteLine(objException);
}
I hope someone can give me a little hint, right now I'm out of ideas.

Well I solved my problem in a different way. Somehow it seems that imdisk didn't format the new RamDisk the way it should and therefor no disk were created. As soon as I deleted the formatting option the disk is created and needs to be formatted. Therefore I started another process and used the cmd command "format Drive:"
For anyone who is interested, my solution is as follows:
class RamDisk
{
public const string MountPoint = "X:";
public void createRamDisk()
{
try
{
string initializeDisk = "imdisk -a ";
string imdiskSize = "-s 1024M ";
string mountPoint = "-m "+ MountPoint + " ";
ProcessStartInfo procStartInfo = new ProcessStartInfo();
procStartInfo.UseShellExecute = false;
procStartInfo.CreateNoWindow = true;
procStartInfo.FileName = "cmd";
procStartInfo.Arguments = "/C " + initializeDisk + imdiskSize + mountPoint;
Process.Start(procStartInfo);
formatRAMDisk();
}
catch (Exception objException)
{
Console.WriteLine("There was an Error, while trying to create a ramdisk! Do you have imdisk installed?");
Console.WriteLine(objException);
}
}
/**
* since the format option with imdisk doesn't seem to work
* use the fomat X: command via cmd
*
* as I would say in german:
* "Von hinten durch die Brust ins Auge"
* **/
private void formatRAMDisk(){
string cmdFormatHDD = "format " + MountPoint + "/Q /FS:NTFS";
SecureString password = new SecureString();
password.AppendChar('0');
password.AppendChar('8');
password.AppendChar('1');
password.AppendChar('5');
ProcessStartInfo formatRAMDiskProcess = new ProcessStartInfo();
formatRAMDiskProcess.UseShellExecute = false;
formatRAMDiskProcess.CreateNoWindow = true;
formatRAMDiskProcess.RedirectStandardInput = true;
formatRAMDiskProcess.FileName = "cmd";
formatRAMDiskProcess.Verb = "runas";
formatRAMDiskProcess.UserName = "Administrator";
formatRAMDiskProcess.Password = password;
formatRAMDiskProcess.Arguments = "/C " + cmdFormatHDD;
Process process = Process.Start(formatRAMDiskProcess);
sendCMDInput(process);
}
private void sendCMDInput(Process process)
{
StreamWriter inputWriter = process.StandardInput;
inputWriter.WriteLine("J");
inputWriter.Flush();
inputWriter.WriteLine("RAMDisk for valueable data");
inputWriter.Flush();
}
public string getMountPoint()
{
return MountPoint;
}
}

Doesn't cmd.exe need to have the /C command line option passed through to run a command passed through as an argument? May well be that cmd.exe is just ignoring what you're passing through in procStartInfo.Arguments because you haven't prepended "/C " onto the front of the Arguments.

Merge videos in c# asp.net using ffmpeg

Is it possible to merge the two videos by c# asp.net with the help of ffmpeg. In the ffmpeg documentation they gave us cat command. But it wont works in asp.net. I thought it only for linux.
cat intermediate1.mpg intermediate2.mpg > intermediate_all.mpg
asp.net execute this command but there is no output. Help me.
namespace demo
{
public partial class Default : System.Web.UI.Page
{
protected void Button2_Click(object sender, EventArgs e)
{
string strFile = "cars1.flv";
MergeFiles(strFile);
}
public void MergeFiles(string strFile)
{
string strParam;
string Path_FFMPEG = Server.MapPath("~/ffmpeg/bin/ffmpeg.exe");
//Converting a video into mp4 format
string strOrginal = Server.MapPath("~/Videos/");
strOrginal = strOrginal + strFile;
string strConvert = Server.MapPath("~/Videos/ConvertedFiles/");
string strExtn = Path.GetExtension(strOrginal);
if (strExtn != ".mp4")
{
strConvert = strConvert + strFile.Replace(strExtn, ".mp4");
strParam = "-i " + strOrginal + " " + strConvert;
//strParam = "-i " + strOrginal + " -same_quant " + strConvert;
process(Path_FFMPEG, strParam);
}
//Merging two videos
String video1 = Server.MapPath("~/Videos/Cars1.mp4");
String video2 = Server.MapPath("~/Videos/ConvertedFiles/Cars2.mp4");
String strResult = Server.MapPath("~/Videos/ConvertedFiles/Merge.mp4");
//strParam = "-loop_input -shortest -y -i " + video1 + " -i " + video2 + " -acodec copy -vcodec mjpeg " + strResult;
strParam = " -i " + video1 + " -i " + video2 + " -acodec copy -vcodec mjpeg " + strResult;
process(Path_FFMPEG, strParam);
}
public void process(string Path_FFMPEG, string strParam)
{
try
{
Process ffmpeg = new Process();
ProcessStartInfo ffmpeg_StartInfo = new ProcessStartInfo(Path_FFMPEG, strParam);
ffmpeg_StartInfo.UseShellExecute = false;
ffmpeg_StartInfo.RedirectStandardError = true;
ffmpeg_StartInfo.RedirectStandardOutput = true;
ffmpeg.StartInfo = ffmpeg_StartInfo;
ffmpeg_StartInfo.CreateNoWindow = true;
ffmpeg.EnableRaisingEvents = true;
ffmpeg.Start();
ffmpeg.WaitForExit();
ffmpeg.Close();
ffmpeg.Dispose();
ffmpeg = null;
}
catch (Exception ex)
{
}
}
}
}

Finally i found the answer for my own question.
The following method resolves my problem.
public void MergeFiles(string strFile)
{
Process p = new Process();
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.CreateNoWindow = true;
p.StartInfo.FileName = Server.MapPath("~/app.bat");
p.Start();
p.WaitForExit();
p.Dispose();
}
app.bat
The app.bat contains the following code.
copy e:\cars1.mpg /b + e:\cars2.mpg /b e:\output.mpg /b
NOTE: This is for windows only. That's why "cat" command doesn't works. Instead of "cat" command we use copy command.

Creating app. Bat file double the file size but it play as single. Still problem not resolved. You should try ffmpeg concat command approach in which you need to create a text file that contain files names and this file should be on same folder where mp4 file are. the below code will help you i was facing the same issue. My task was to merge two mp4 files and I merge successfully when I was doing it from Command prompt. But stuck when I was doiing it through asp. Net. My issue resolved by given correct path and remove ffmpeg from command. For E. G( ffmepg - f concat TO - f concat)
Dim _ffmpeg As String = "D:\Develop\Experiment\mergermp4Vb\mergermp4Vb\bin\ffmpeg.exe"
Dim params = "-f concat -i D:\Develop\Experiment\mergermp4Vb\mergermp4Vb\Videos\mylist2.txt -c copy D:\Develop\Experiment\mergermp4Vb\mergermp4Vb\Videos\0104.mp4"
Dim _FFmpegProcessPropertys As New ProcessStartInfo
_FFmpegProcessPropertys.FileName = _ffmpeg
_FFmpegProcessPropertys.Arguments = params
_FFmpegProcessPropertys.UseShellExecute = False
_FFmpegProcessPropertys.RedirectStandardOutput = True
_FFmpegProcessPropertys.RedirectStandardError = True
_FFmpegProcessPropertys.CreateNoWindow = True
Dim FFmpegProcess = Process.Start(_FFmpegProcessPropertys)

How to capture thumbnail for video while uploading it in ASP.NET?

I want to know how to capture thumbnail for video while uploading it in ASP.NET ?

Well first of all, you will also need to convert it to MP4 which will work on everywhere. For that you can use ffmpeg tool,
To Create Thumbnail,
//Create Thumbs
string thumbpath, thumbname;
string thumbargs;
string thumbre;
thumbpath = AppDomain.CurrentDomain.BaseDirectory + "Video\\Thumb\\";
thumbname = thumbpath + withoutext + "%d" + ".jpg";
thumbargs = "-i " + inputfile + " -vframes 1 -ss 00:00:07 -s 150x150 " + thumbname;
Process thumbproc = new Process();
thumbproc = new Process();
thumbproc.StartInfo.FileName = spath + "\\ffmpeg\\ffmpeg.exe";
thumbproc.StartInfo.Arguments = thumbargs;
thumbproc.StartInfo.UseShellExecute = false;
thumbproc.StartInfo.CreateNoWindow = false;
thumbproc.StartInfo.RedirectStandardOutput = false;
try
{
thumbproc.Start();
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
thumbproc.WaitForExit();
thumbproc.Close();
However, for more details about the code, see this link.
http://ramcrishna.blogspot.com/2008/09/playing-videos-like-youtube-and.html
And you will need to change paths according to your web application's path.