public Status EncodeVideo(EncodeObject eo)
{
Status Result = Status.Done;
if (!File.Exists(eo.MO.FileInfo.FullName))
{
if (Completed != null)
{
CompletedEventArgs e = new CompletedEventArgs();
e.Result = Status.ErrorFileNotFound;
eo.Status = Status.ErrorFileNotFound;
e.EO = eo;
Completed(this, e);
}
}
string filename = Path.GetFileNameWithoutExtension(eo.MO.FileInfo.FullName);
string ext = eo.MO.FileInfo.Extension;
// -i 101S102_CT01V01.mp4 -c:v libx265 -vf scale=-1:720 -preset medium -crf 23 -acodec copy 101S102_CT01V01-x265.mp4
// nvenc_hevc hevc_qsv
// \"'-1':'if(gt(a,720),720,-1)'\"
if (eo.outdir == string.Empty)
{
eo.outdir = eo.MO.FileInfo.DirectoryName;
}
string outfilename = Path.Combine(eo.outdir, filename) + eo.suffix + ".mp4";
if (File.Exists(outfilename))
{
if (Completed != null)
{
CompletedEventArgs e = new CompletedEventArgs();
e.Result = Status.ErrorFileAlreadyExists;
eo.Status = Status.ErrorFileAlreadyExists;
e.EO = eo;
Completed(this, e);
}
return(Status.ErrorFileAlreadyExists);
}
int exitcode = -1;
try
{
if (eo.QType == EncodeObject.QualityEnum.CRF)
{
StringBuilder arguments = new StringBuilder();
arguments.Append(" -i \"").Append(eo.MO.FileInfo.FullName).Append("\"");
arguments.Append(" -c:v ").Append(eo.codec);
if (eo.scale > 0)
{
arguments.Append(" -vf scale=\"'-1':'if(gt(ih," + eo.scale.ToString() + ")," + eo.scale.ToString() + ",-1)':flags=lanczos\"");
}
arguments.Append(" -preset medium");
arguments.Append(" -crf ").Append(eo.Q);
if (eo.MO.Audio.StartsWith("aac"))
{
arguments.Append(" -acodec copy ");
}
arguments.Append(" \"").Append(outfilename).Append("\"");
exitcode = executeFFmpeg(arguments.ToString(), eo);
}
else if (eo.QType == EncodeObject.QualityEnum.AvgBitrate)
{
StringBuilder arguments = new StringBuilder();
if (eo.codec == "libx264" || eo.codec == "libx265")
{
// first pass
arguments.Append(" -y -i \"").Append(eo.MO.FileInfo.FullName).Append("\"");
arguments.Append(" -c:v ").Append(eo.codec);
if (eo.scale > 0)
{
arguments.Append(" -vf scale=\"'-1':'if(gt(ih," + eo.scale.ToString() + ")," + eo.scale.ToString() + ",-1)':flags=lanczos\"");
}
arguments.Append(" -preset medium");
arguments.Append(" -b:v ").Append(eo.Q).Append("k");
arguments.Append(" -an");
if (eo.codec == "libx265")
{
arguments.Append(" -x265-params no-slow-firstpass=1:pass=1");
}
else if (eo.codec == "libx264")
{
arguments.Append(" -pass 1 -fastfirstpass 1 ");
}
arguments.Append(" -f mp4");
arguments.Append(" NUL");
exitcode = executeFFmpeg(arguments.ToString(), eo);
}
else
{
exitcode = 0;
}
if (exitcode == 0)
{
arguments.Clear();
arguments.Append(" -i \"").Append(eo.MO.FileInfo.FullName).Append("\"");
arguments.Append(" -c:v ").Append(eo.codec);
if (eo.scale > 0)
{
arguments.Append(" -vf scale=\"'-1':'if(gt(ih," + eo.scale.ToString() + ")," + eo.scale.ToString() + ",-1)':flags=lanczos\"");
}
arguments.Append(" -preset medium");
arguments.Append(" -b:v ").Append(eo.Q).Append("k");
if (eo.codec == "libx265")
{
arguments.Append(" -x265-params pass=2");
}
else
{
arguments.Append(" -pass 2");
}
if (eo.MO.Audio.StartsWith("aac"))
{
arguments.Append(" -acodec copy ");
}
arguments.Append(" \"").Append(outfilename).Append("\"");
exitcode = executeFFmpeg(arguments.ToString(), eo);
}
}
} catch (Exception e)
{
eo.Status = Status.ErrorUnknown;
}
if (eo.Status != Status.New)
{
// Set by event handler
Result = eo.Status;
}
else if (exitcode == 0 && Result == Status.Done)
{
eo.NewSize = (new FileInfo(outfilename)).Length;
}
else if (exitcode != 0 && Result != Status.Done)
{
Result = Status.ErrorUnknown;
}
if (Completed != null)
{
CompletedEventArgs e = new CompletedEventArgs();
e.Result = Result;
eo.Status = Result;
e.EO = eo;
Completed(this, e);
}
return(Result);
}
private int executeFFmpeg(string args, EncodeObject eo)
{
ffmpeg_process = new Process
{
StartInfo =
{
FileName = ffmpeg_exe,
RedirectStandardError = true,
RedirectStandardOutput = true,
UseShellExecute = false,
Arguments = args,
CreateNoWindow = true
},
};
ffmpeg_process.Start();
ffmpeg_process.PriorityClass = ProcessPriorityClass.BelowNormal;
try
{
Regex progressRegex = new Regex(@"(?<KEY>[a-z]+)=\s*(?<VALUE>[^ ]+)\s*", RegexOptions.Compiled);
Regex digRegex = new Regex(@"\d+");
Regex fltRegex = new Regex(@"\d+(\.\d+)?");
while (true)
{
var line = ffmpeg_process.StandardError.ReadLine();
if (line == null || line == string.Empty)
{
break;
}
MatchCollection mc = progressRegex.Matches(line);
if (mc.Count == 0)
{
continue;
}
string[] groups = new string[] { "frame", "fps", "size", "time", "bitrate", "speed" };
Dictionary <string, string> info = new Dictionary <string, string>();
foreach (Match m in mc)
{
info[m.Groups["KEY"].Value] = m.Groups["VALUE"].Value;
}
Debug.WriteLine(line);
ProgressInfo pi = new ProgressInfo();
string v;
info.TryGetValue("frame", out pi.frame);
if (info.TryGetValue("fps", out v))
{
Match m = fltRegex.Match(v);
if (m.Success)
{
float.TryParse(m.Groups[0].Value, out pi.fps);
}
}
if (info.TryGetValue("size", out v))
{
Match m = digRegex.Match(v);
if (m.Success)
{
int.TryParse(m.Groups[0].Value, out pi.size);
}
}
if (info.TryGetValue("time", out v))
{
TimeSpan.TryParse(v, out pi.time);
}
if (info.TryGetValue("bitrate", out v))
{
Match m = fltRegex.Match(v);
if (m.Success)
{
float.TryParse(m.Groups[0].Value, out pi.bitrate);
eo.NewBitrate = (int)pi.bitrate;
}
}
if (info.TryGetValue("speed", out v))
{
Match m = fltRegex.Match(v);
if (m.Success)
{
float.TryParse(m.Groups[0].Value, out pi.speed);
}
}
if (ProgressUpdate != null)
{
ProgressInfoEventArgs e = new ProgressInfoEventArgs();
e.Info = pi;
e.EO = eo;
ProgressUpdate(this, e);
}
}
}
finally { }
if (!ffmpeg_process.WaitForExit(500))
{
ffmpeg_process.Kill();
ffmpeg_process.WaitForExit();
}
int exitcode = ffmpeg_process.ExitCode;
ffmpeg_process.Dispose();
return(exitcode);
}
