/// <summary>
/// Call ffmpeg with provided arguments and update the progress dialog.
/// No windows will popup. If Cancel is pressed in the progress dialog, the process will be killed.
/// </summary>
static public void startFFmpegProgress(string ffmpegAudioProgArgs, DialogProgress dialogProgress)
{
Process ffmpegProcess = new Process();
bool tryAgain = true;
bool useShellExecute = false;
bool createNoWindow = true;
// Try several different ways of calling ffmpeg because of the dreaded
// "System.ComponentModel.Win32Exception: The system cannot find the drive specified" exception
// Try relative path from subs2srs.exe
try
{
ffmpegProcess.StartInfo.FileName = ConstantSettings.PathFFmpegExe;
ffmpegProcess.StartInfo.Arguments = ffmpegAudioProgArgs;
ffmpegProcess.StartInfo.UseShellExecute = useShellExecute;
ffmpegProcess.StartInfo.CreateNoWindow = createNoWindow;
ffmpegProcess.StartInfo.RedirectStandardError = true;
ffmpegProcess.ErrorDataReceived += new DataReceivedEventHandler(DialogProgress.getFFmpegOutputHandler(dialogProgress));
ffmpegProcess.Start();
ffmpegProcess.BeginErrorReadLine();
// Loop until process has exited
while (!ffmpegProcess.HasExited)
{
Thread.Sleep(100);
// If the Cancel button was pressed
if (DialogProgress.getCancelInvoke(dialogProgress))
{
try
{
ffmpegProcess.Kill();
}
catch
{
// Don't care
}
break;
}
}
tryAgain = false;
}
catch
{
try
{
ffmpegProcess.Kill();
}
catch
{
// Dont care
}
tryAgain = true;
}
// Try absolute path to ffmpeg.exe
if (tryAgain)
{
ffmpegProcess = new Process();
try
{
ffmpegProcess.StartInfo.FileName = ConstantSettings.PathFFmpegFullExe;
ffmpegProcess.StartInfo.Arguments = ffmpegAudioProgArgs;
ffmpegProcess.StartInfo.UseShellExecute = useShellExecute;
ffmpegProcess.StartInfo.CreateNoWindow = createNoWindow;
ffmpegProcess.StartInfo.RedirectStandardError = true;
ffmpegProcess.ErrorDataReceived += new DataReceivedEventHandler(DialogProgress.getFFmpegOutputHandler(dialogProgress));
ffmpegProcess.Start();
ffmpegProcess.BeginErrorReadLine();
// Loop until process has exited
while (!ffmpegProcess.HasExited)
{
Thread.Sleep(100);
// If the Cancel button was pressed
if (DialogProgress.getCancelInvoke(dialogProgress))
{
try
{
ffmpegProcess.Kill();
}
catch
{
// Don't care
}
break;
}
}
tryAgain = false;
}
catch (Exception)
{
try
{
ffmpegProcess.Kill();
}
catch
{
// Dont care
}
tryAgain = true;
}
}
// Try setting PATH to include the absolute path of ffmpeg.exe
if (tryAgain)
{
try
{
string oldPath = Environment.GetEnvironmentVariable("Path");
string ffmpegDir = Path.GetDirectoryName(ConstantSettings.PathFFmpegFullExe);
if (!oldPath.Contains(ffmpegDir))
{
string newPath = oldPath + ";" + ffmpegDir;
Environment.SetEnvironmentVariable("Path", newPath);
}
ffmpegProcess = new Process();
ffmpegProcess.StartInfo.FileName = ConstantSettings.ExeFFmpeg;
ffmpegProcess.StartInfo.Arguments = ffmpegAudioProgArgs;
ffmpegProcess.StartInfo.UseShellExecute = useShellExecute;
ffmpegProcess.StartInfo.CreateNoWindow = createNoWindow;
ffmpegProcess.StartInfo.RedirectStandardError = true;
ffmpegProcess.ErrorDataReceived += new DataReceivedEventHandler(DialogProgress.getFFmpegOutputHandler(dialogProgress));
ffmpegProcess.Start();
ffmpegProcess.BeginErrorReadLine();
// Loop until process has exited
while (!ffmpegProcess.HasExited)
{
Thread.Sleep(100);
// If the Cancel button was pressed
if (DialogProgress.getCancelInvoke(dialogProgress))
{
try
{
ffmpegProcess.Kill();
}
catch
{
// Don't care
}
break;
}
}
}
catch
{
// Don't care
}
}
}
