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;
}
private bool SpawnTranscoder(bool needsStdin, bool needsStdout)
{
ProcessStartInfo start = new ProcessStartInfo(transcoderPath, arguments);
start.UseShellExecute = false;
start.RedirectStandardInput = needsStdin;
start.RedirectStandardOutput = needsStdout || (!DebugOutput && logStream == LogStream.StandardOut && IsLogStreamConnected);
start.RedirectStandardError = !DebugOutput && logStream == LogStream.StandardError && IsLogStreamConnected;
start.WindowStyle = DebugOutput ? ProcessWindowStyle.Normal : ProcessWindowStyle.Hidden;
start.CreateNoWindow = !DebugOutput;
StreamLog.Info(context.Identifier, "Encoder: Transcoder configuration dump");
StreamLog.Info(context.Identifier, "Encoder: hasStdin {0}, hasStdout {1}, hasStderr {2}", start.RedirectStandardInput, start.RedirectStandardOutput, start.RedirectStandardError);
StreamLog.Info(context.Identifier, "Encoder: path {0}", transcoderPath);
StreamLog.Info(context.Identifier, "Encoder: arguments {0}", arguments);
try
{
transcoderApplication = new TranscoderProcess();
transcoderApplication.StartInfo = start;
if (context.Source.NeedsImpersonation)
transcoderApplication.StartAsUser(Configuration.Services.NetworkImpersonation.Domain, Configuration.Services.NetworkImpersonation.Username, Configuration.Services.NetworkImpersonation.GetPassword());
else
transcoderApplication.Start();
}
catch (Win32Exception e)
{
StreamLog.Error(context.Identifier, "Encoding: Failed to start transcoder", e);
return false;
}
return true;
}