private async Task CutOneFile(FilesGroup step, ParallelProgressChild progress, CancellationToken cancellation)
{
var outputFormat = step.OutputEncoding ?? "-c copy";
var file = step.Files.Single();
var filePath = step.FilePath;
var args = $"-i \"{file.FilePath}\" -ss {file.Start} -t {file.CutDuration} {outputFormat} -y \"{filePath}\"";
Debug.WriteLine(args);
await tasksLimit.WaitAsync(cancellation);
try
{
using (var proc = StartProcess(FFMpegPath, str => UpdateProgress(str, progress), cancellation, args))
{
await proc;
}
}
finally
{
tasksLimit.Release();
}
}
private async Task ConcatMultipleFiles(FilesGroup step, ParallelProgressContainer progress, CancellationToken cancellation)
{
var outputFormat = step.OutputEncoding ?? "-c copy";
var concatFiles = new List <string>();
var tasks = new List <Task>();
var filesToDelete = new List <string>();
var doneLock = new object();
try
{
foreach (var file in step.Files)
{
cancellation.ThrowIfCancellationRequested();
if (Math.Abs(file.CutDuration - file.Duration) < 0.001)
{
concatFiles.Add(file.FilePath);
}
else
{
var newfile = Path.GetTempFileName() + Path.GetExtension(step.FilePath);
var tempargs = $"-i \"{file.FilePath}\" -ss {file.Start} -t {file.CutDuration} -c copy -y \"{newfile}\"";
Debug.WriteLine(tempargs);
var cutprogress = new ParallelProgressChild();
progress.Add(cutprogress);
await tasksLimit.WaitAsync(cancellation);
var tempproc = StartProcess(FFMpegPath, str => UpdateProgress(str, cutprogress, 0.5), cancellation, tempargs);
var fileCutDuration = file.CutDuration;
var task = tempproc.ContinueWith(
t =>
{
t.Result.Dispose();
tasksLimit.Release();
},
cancellation);
filesToDelete.Add(newfile);
concatFiles.Add(newfile);
tasks.Add(task);
}
}
await Task.WhenAll(tasks.ToArray());
if (string.IsNullOrWhiteSpace(step.ComplexFilter))
{
await ConcatFilesSimple(step, progress, concatFiles, outputFormat, cancellation);
}
else
{
await ConcatFilesComplex(step, progress, concatFiles, cancellation);
}
}
finally
{
foreach (var file in filesToDelete)
{
File.Delete(file);
}
}
}
