public static string GetSubtitleSubrip(FileInfo file)
{
if (FFmpegExecutable == null)
{
throw new NotSupportedException();
}
if (file == null)
{
throw new ArgumentNullException(nameof(file));
}
try
{
using (var p = new Process())
{
var sti = p.StartInfo;
#if !DEBUG
sti.CreateNoWindow = true;
#endif
sti.UseShellExecute = false;
sti.FileName = FFmpegExecutable;
sti.Arguments = $"-i \"{file.FullName}\" -map s:0 -f srt pipe:";
sti.LoadUserProfile = false;
sti.RedirectStandardOutput = true;
p.Start();
var lastPosition = 0L;
using (var reader = new StreamReader(StreamManager.GetStream()))
{
using (var pump = new StreamPump(
p.StandardOutput.BaseStream, reader.BaseStream, 100))
{
pump.Pump(null);
while (!p.WaitForExit(20000))
{
if (lastPosition != reader.BaseStream.Position)
{
lastPosition = reader.BaseStream.Position;
continue;
}
p.Kill();
throw new NotSupportedException("ffmpeg timed out");
}
if (!pump.Wait(2000))
{
throw new NotSupportedException("ffmpeg pump timed out");
}
reader.BaseStream.Seek(0, SeekOrigin.Begin);
var rv = string.Empty;
string line;
while ((line = reader.ReadLine()) != null)
{
rv += regAssStrip.Replace(line.Trim(), string.Empty) + "\n";
}
if (!string.IsNullOrWhiteSpace(rv))
{
return(rv);
}
}
}
}
}
catch (Exception ex)
{
throw new NotSupportedException(ex.Message, ex);
}
throw new NotSupportedException(
"File does not contain a valid subtitle");
}
private static IDictionary <string, string> IdentifyInternalFromProcess(
FileInfo file)
{
using (var p = new Process())
{
var sti = p.StartInfo;
#if !DEBUG
sti.CreateNoWindow = true;
#endif
sti.UseShellExecute = false;
sti.FileName = FFmpegExecutable;
sti.Arguments = $"-i \"{file.FullName}\"";
sti.LoadUserProfile = false;
sti.RedirectStandardError = true;
p.Start();
IDictionary <string, string> rv = new Dictionary <string, string>();
using (var reader = new StreamReader(StreamManager.GetStream()))
{
using (var pump = new StreamPump(
p.StandardError.BaseStream, reader.BaseStream, 4096))
{
pump.Pump(null);
if (!p.WaitForExit(3000))
{
throw new NotSupportedException("ffmpeg timed out");
}
if (!pump.Wait(1000))
{
throw new NotSupportedException("ffmpeg pump timed out");
}
reader.BaseStream.Seek(0, SeekOrigin.Begin);
var output = reader.ReadToEnd();
var match = regDuration.Match(output);
if (match.Success)
{
int h, m, s;
if (int.TryParse(match.Groups[1].Value, out h) &&
int.TryParse(match.Groups[2].Value, out m) &&
int.TryParse(match.Groups[3].Value, out s))
{
int ms;
if (match.Groups.Count < 5 ||
!int.TryParse(match.Groups[4].Value, out ms))
{
ms = 0;
}
var ts = new TimeSpan(0, h, m, s, ms * 10);
var tss = ts.TotalSeconds.ToString(
CultureInfo.InvariantCulture);
rv.Add("LENGTH", tss);
}
}
match = regDimensions.Match(output);
if (match.Success)
{
int w, h;
if (int.TryParse(match.Groups[1].Value, out w) &&
int.TryParse(match.Groups[2].Value, out h))
{
rv.Add("VIDEO_WIDTH", w.ToString());
rv.Add("VIDEO_HEIGHT", h.ToString());
}
}
}
}
if (rv.Count == 0)
{
throw new NotSupportedException("File not supported");
}
return(rv);
}
}
