public static async Task ExecuteSoftRemoval(String sourceVideoFileName, String outputFileName)
{
using (RedirectedProcess process = new RedirectedProcess(ToolPaths.FFMPEGPath,
$"-i \"{sourceVideoFileName}\" -map 0 -map -0:s -codec copy \"{outputFileName}\""))
{
App.LogViewModel.RedirectedProcess = process;
await process.StartAsync();
}
}
public static async Task ExecuteFormatConversion(String sourceFileName, String outputFileName, Boolean noReEncode)
{
String commonParameters = $"-y ";
if (noReEncode)
{
commonParameters += "-c copy ";
}
// Pass 1
StringBuilder sb = new StringBuilder();
sb.Append($"-i \"{sourceFileName}\" ");
sb.Append(commonParameters);
sb.Append($"\"{outputFileName}\"");
using (RedirectedProcess process = new RedirectedProcess(ToolPaths.FFMPEGPath, sb.ToString()))
{
App.LogViewModel.RedirectedProcess = process;
await process.StartAsync();
}
}
public static async Task ExecuteConversion(String sourceVideoFileName, String sourceSubtitleFileName, String outputFileName, Boolean is60FPS)
{
String outputDirectory = Path.GetDirectoryName(outputFileName);
String tempFileName = Path.Combine(outputDirectory, Path.GetRandomFileName());
String outputFileExtension = Path.GetExtension(outputFileName);
String commonParameters = $"-vcodec libx264 -preset veryslow -profile:v high -level:v 4.1 -pix_fmt yuv420p -b:v 2000k -acodec aac -strict -2 -ac 2 -ab 192k -ar 44100 -f {outputFileExtension.Remove(0, 1)} -y ";
// Pass 1
StringBuilder sb = new StringBuilder();
sb.Append($"-i \"{sourceVideoFileName}\" ");
if (!String.IsNullOrEmpty(sourceSubtitleFileName))
{
// Subtitle filename must be escaped twice
sb.Append($"-vf subtitles=\"{sourceSubtitleFileName.Replace(@"\", @"\\\\").Replace(":", @"\\:")}\" ");
}
sb.Append(commonParameters);
if (is60FPS)
{
sb.Append("-r 60 ");
}
sb.Append("-pass 1 ");
sb.Append($"\"{tempFileName}\"");
using (RedirectedProcess process = new RedirectedProcess(ToolPaths.FFMPEGPath, sb.ToString()))
{
App.LogViewModel.RedirectedProcess = process;
await process.StartAsync();
}
// Pass 2
sb = new StringBuilder();
sb.Append($"-i \"{tempFileName}\" ");
sb.Append(commonParameters);
if (is60FPS)
{
sb.Append("-r 60 ");
}
sb.Append("-pass 2 ");
sb.Append($"\"{outputFileName}\"");
using (RedirectedProcess process = new RedirectedProcess(ToolPaths.FFMPEGPath, sb.ToString()))
{
App.LogViewModel.RedirectedProcess = process;
await process.StartAsync();
}
File.Delete(tempFileName);
foreach (String item in Directory.GetFiles(outputDirectory, "ffmpeg2pass-0.*"))
{
File.Delete(item);
}
}
public static async Task ExecuteHardRemoval
(String sourceVideoFileName, String outputFileName,
IEnumerable <SubtitleParameters> subtitleParameters)
{
// AviSynth for x26x - Process source file using hard-coded subtitle removal algorithm
String avsFileName = Path.Combine(Path.GetTempPath(), "HardCodedSubtitleRemoval.avs");
// For some reason avs4x26x program cannot accept input file name with # character
String x264OutputFileName = Path.Combine(Path.GetTempPath(),
Path.GetFileNameWithoutExtension(outputFileName).Replace("#", String.Empty) + ".264");
File.WriteAllText(avsFileName, SubtitleRemovalHelper.WriteHardCodedSubtitleRemovalAVS
(sourceVideoFileName, ToolPaths.ToolsPath, subtitleParameters));
String arguments = $"-o \"{x264OutputFileName}\" \"{avsFileName}\"";
using (RedirectedProcess process = new RedirectedProcess(ToolPaths.AVS4x26xPath, arguments))
{
App.LogViewModel.RedirectedProcess = process;
await process.StartAsync();
}
File.Delete(avsFileName);
// FFVideoSource produces .ffindex files in the same folder of the source file
if (File.Exists(sourceVideoFileName + ".ffindex"))
{
File.Delete(sourceVideoFileName + ".ffindex");
}
// MP4Box - Pack AviSynth output into video stream
String videoOutputFileName = Path.Combine(Path.GetTempPath(),
Path.GetFileNameWithoutExtension(outputFileName) + ".v");
arguments = $"-add \"{x264OutputFileName}\" \"{videoOutputFileName}\"";
using (RedirectedProcess process = new RedirectedProcess(ToolPaths.MP4BoxPath, arguments))
{
App.LogViewModel.RedirectedProcess = process;
await process.StartAsync();
}
File.Delete(x264OutputFileName);
// FFProbe - Detect audio format of the source
arguments = $"-v error -select_streams a:0 -show_entries stream=codec_name -of default=nokey=1:noprint_wrappers=1" +
$" \"{sourceVideoFileName}\"";
String audioFormat = null;
using (RedirectedProcess process = new RedirectedProcess(ToolPaths.FFProbePath, arguments))
{
await Task.Run(() =>
{
process.Start();
audioFormat = process.StandardOutput.ReadToEnd().Trim();
process.WaitForExit();
});
}
if (!String.IsNullOrEmpty(audioFormat))
{
// FFMPEG - Extract audio stream
String audioOutputFileName = Path.Combine(Path.GetTempPath(),
Path.GetFileNameWithoutExtension(outputFileName) + $".{audioFormat}");
arguments = $"-i \"{sourceVideoFileName}\" -vn -acodec copy \"{audioOutputFileName}\"";
using (RedirectedProcess process = new RedirectedProcess(ToolPaths.FFMPEGPath, arguments))
{
App.LogViewModel.RedirectedProcess = process;
await process.StartAsync();
}
// FFMPEG - Remux audio stream with packed video stream
arguments = $"-i \"{videoOutputFileName}\" -i \"{audioOutputFileName}\" -map 0:v -map 1:a -c copy -y" +
$" \"{outputFileName}\"";
using (RedirectedProcess process = new RedirectedProcess(ToolPaths.FFMPEGPath, arguments))
{
App.LogViewModel.RedirectedProcess = process;
await process.StartAsync();
}
File.Delete(videoOutputFileName);
File.Delete(audioOutputFileName);
}
else
{
throw new InvalidDataException("Unexpected audio format detection error occurred.");
}
}
