public static MediaInfo?GetMediaInfo(string file)
{
using var process = new Process {
StartInfo = new ProcessStartInfo {
Arguments = $" -hide_banner -loglevel error -print_format json -sexagesimal -show_format -show_streams \"{file}\"",
FileName = FFprobePath,
CreateNoWindow = true,
RedirectStandardInput = false,
WorkingDirectory = Path.GetDirectoryName(FFprobePath) !,
RedirectStandardOutput = true,
RedirectStandardError = false,
WindowStyle = ProcessWindowStyle.Hidden
}
};
try {
process.EnableRaisingEvents = true;
process.Start();
using var ms = new MemoryStream();
process.StandardOutput.BaseStream.CopyTo(ms);
if (!process.WaitForExit(TimeoutDuration))
{
Logger.Instance.Info($"FFprobe timed out on file '{file}'");
throw new Exception();
}
return(FFProbeJsonReader.Read(ms.ToArray(), file));
}
catch (Exception) {
try {
if (process.HasExited == false)
{
process.Kill();
}
}
catch { }
return(null);
}
}
public static MediaInfo?GetMediaInfo(string file, bool extendedLogging)
{
//https://docs.microsoft.com/en-us/dotnet/csharp/how-to/concatenate-multiple-strings#string-literals
string ffprobeArguments = $" -hide_banner -loglevel {(extendedLogging ? "error" : "quiet")}" +
$" -print_format json -sexagesimal -show_format -show_streams \"{file}\"";
using var process = new Process {
StartInfo = new ProcessStartInfo {
Arguments = ffprobeArguments,
FileName = FFprobePath,
CreateNoWindow = true,
RedirectStandardInput = false,
WorkingDirectory = Path.GetDirectoryName(FFprobePath) !,
RedirectStandardOutput = true,
RedirectStandardError = extendedLogging,
WindowStyle = ProcessWindowStyle.Hidden
}
};
MediaInfo?mediaInfo = null;
string errOut = string.Empty;
try {
process.EnableRaisingEvents = true;
process.Start();
if (extendedLogging)
{
process.ErrorDataReceived += new DataReceivedEventHandler((sender, e) => {
if (e.Data?.Length > 0)
{
errOut += Environment.NewLine + e.Data;
}
});
process.BeginErrorReadLine();
}
using var ms = new MemoryStream();
process.StandardOutput.BaseStream.CopyTo(ms);
if (!process.WaitForExit(TimeoutDuration))
{
throw new TimeoutException($"FFprobe timed out on file: {file}");
}
else if (extendedLogging)
{
process.WaitForExit(); // Because of asynchronous event handlers, see: https://github.com/dotnet/runtime/issues/18789
}
if (process.ExitCode != 0)
{
throw new FFInvalidExitCodeException($"FFprobe exited with: {process.ExitCode}");
}
mediaInfo = FFProbeJsonReader.Read(ms.ToArray(), file);
}
catch (Exception e) {
errOut += $"{Environment.NewLine}{e.Message}";
try {
if (process.HasExited == false)
{
process.Kill();
}
}
catch { }
mediaInfo = null;
}
if (mediaInfo == null || errOut.Length > 0)
{
string message = $"{((mediaInfo == null) ? "ERROR: Failed to retrieve" : "WARNING: Problems while retrieving")} media info from: {file}";
if (extendedLogging)
{
message += $":{Environment.NewLine}{FFprobePath} {ffprobeArguments}";
}
Logger.Instance.Info($"{message}{errOut}");
}
return(mediaInfo);
}
