private static bool ExecuteFFMpegExtraction(MediaSource source, string path, long position, string tempFile)
{
var info = new ProcessStartInfo();
info.Arguments = String.Format("-ss {0} -i \"{1}\" -vframes 1 -vf \"yadif,scale=ih*dar:ih\" -f image2 \"{2}\"", position, path, tempFile);
info.FileName = Configuration.StreamingProfiles.FFMpegPath;
info.CreateNoWindow = true;
info.UseShellExecute = false;
info.RedirectStandardError = Log.IsEnabled(LogLevel.Trace);
info.RedirectStandardOutput = Log.IsEnabled(LogLevel.Trace);
TranscoderProcess proc = new TranscoderProcess();
proc.StartInfo = info;
if (source.NeedsImpersonation)
{
proc.StartAsUser(Configuration.Services.NetworkImpersonation.Domain, Configuration.Services.NetworkImpersonation.Username, Configuration.Services.NetworkImpersonation.GetPassword());
}
else
{
proc.Start();
}
if (Log.IsEnabled(LogLevel.Trace))
{
Log.Trace("ExtractImage: executing path={0} arguments={1}", info.FileName, info.Arguments);
StreamCopy.AsyncStreamRead(proc.StandardError, l => Log.Trace("ExtractImage: stderr: {0}", l));
StreamCopy.AsyncStreamRead(proc.StandardOutput, l => Log.Trace("ExtractImage: stdout: {0}", l));
}
proc.WaitForExit();
if (!File.Exists(tempFile))
{
Log.Warn("Failed to extract image from {0} with {1} {2}", source.GetDebugName(), info.FileName, info.Arguments);
return(false);
}
return(true);
}
public static void AsyncStreamCopy(Stream original, Stream destination, string logIdentifier, int bufferSize)
{
StreamCopy copy = new StreamCopy(original, destination, bufferSize, logIdentifier);
copy.CopyStream();
}
public static void AsyncStreamCopy(Stream source, Stream destination, string logIdentifier, int bufferSize)
{
StreamCopy copy = new StreamCopy(source, destination, bufferSize, logIdentifier);
copy.CopyStream();
}