/// ------------------------------------------------------------------------------------
private void DoConversion(object commandLine)
{
var exePath = FFmpegDownloadHelper.FullPathToFFmpegForSayMoreExe;
_conversionOutput = new StringBuilder(exePath);
_conversionOutput.Append(commandLine);
try
{
// ffmpeg always seems to write the output to standarderror.
// I don't understand why and that's wrong, but we'll deal with it.
_process = ExternalProcess.StartProcessToMonitor(exePath, commandLine as string,
HandleProcessDataReceived, HandleProcessDataReceived, null);
}
catch (Exception e)
{
ErrorReport.ReportNonFatalException(e);
return;
}
try
{
_process.PriorityClass = ProcessPriorityClass.BelowNormal;
}
catch (InvalidOperationException)
{
// process probably already exited
}
_process.WaitForExit();
if (_conversionReportingAction != null)
{
_conversionReportingAction(TimeSpan.FromSeconds(int.MaxValue), null);
}
}
/// ------------------------------------------------------------------------------------
public static Image GetImageFromVideo(string videoPath, float seconds)
{
Image img = null;
videoPath = videoPath.Replace('\\', '/');
var prs = new ExternalProcess(MPlayerPath);
var tmpFolder = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString());
Directory.CreateDirectory(tmpFolder);
var tmpFile = Path.Combine(tmpFolder, "00000001.jpg");
try
{
prs.StartInfo.Arguments =
string.Format("-nocache -nofontconfig -really-quiet -frames 1 -ss {0} -nosound -vo jpeg:outdir=\"\"\"{1}\"\"\" \"{2}\"",
seconds, tmpFolder, videoPath);
prs.StartProcess();
prs.WaitForExit();
prs.Close();
// I'm hesitant to comment out this line, but because of SP-248, we'll see what happens.
//ComponentFile.WaitForFileRelease(videoPath);
if (File.Exists(tmpFile))
{
// I could use Image.FromFile, but that leaves
// a lock on the file, for some reason.
var stream = new FileStream(tmpFile, FileMode.Open);
img = Image.FromStream(stream);
stream.Close();
}
}
finally
{
if (File.Exists(tmpFile))
{
File.Delete(tmpFile);
}
try { Directory.Delete(tmpFolder); }
catch { }
}
return(img);
}