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Merge pull request #473 from duggaraju/main

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Add support for multiple outputs and tee muxer.
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Malte Rosenbjerg 2023-10-05 12:17:06 +02:00 committed by GitHub
commit d90b482213
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4 changed files with 141 additions and 0 deletions
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40
FFMpegCore.Test/ArgumentBuilderTest.cs
View file

@ -571,5 +571,45 @@ public void Builder_BuildString_GifPalette_NullSize_FpsSupplied()
-i "input.mp4" -filter_complex "[{streamIndex}:v] fps=10,split [a][b];[a] palettegen=max_colors=32 [p];[b][p] paletteuse=dither=bayer" "output.gif"
""", str);
}
[TestMethod]
public void Builder_BuildString_MultiOutput()
{
var str = FFMpegArguments.FromFileInput("input.mp4")
.MultiOutput(args => args
.OutputToFile("output.mp4", overwrite: true, args => args.CopyChannel())
.OutputToFile("output.ts", overwrite: false, args => args.CopyChannel().ForceFormat("mpegts"))
.OutputToUrl("http://server/path", options => options.ForceFormat("webm")))
.Arguments;
Assert.AreEqual($"""
-i "input.mp4" -c:a copy -c:v copy "output.mp4" -y -c:a copy -c:v copy -f mpegts "output.ts" -f webm http://server/path
""", str);
}
[TestMethod]
public void Builder_BuildString_MBROutput()
{
var str = FFMpegArguments.FromFileInput("input.mp4")
.MultiOutput(args => args
.OutputToFile("sd.mp4", overwrite: true, args => args.Resize(1200, 720))
.OutputToFile("hd.mp4", overwrite: false, args => args.Resize(1920, 1080)))
.Arguments;
Assert.AreEqual($"""
-i "input.mp4" -s 1200x720 "sd.mp4" -y -s 1920x1080 "hd.mp4"
""", str);
}
[TestMethod]
public void Builder_BuildString_TeeOutput()
{
var str = FFMpegArguments.FromFileInput("input.mp4")
.OutputToTee(args => args
.OutputToFile("output.mp4", overwrite: false, args => args.WithFastStart())
.OutputToUrl("http://server/path", options => options.ForceFormat("mpegts").SelectStream(0, channel: Channel.Video)))
.Arguments;
Assert.AreEqual($"""
-i "input.mp4" -f tee "[movflags=faststart]output.mp4|[f=mpegts:select=\'0:v:0\']http://server/path"
""", str);
}
}
}

57
FFMpegCore/FFMpeg/Arguments/OutputTeeArgument.cs Normal file
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@ -0,0 +1,57 @@

namespace FFMpegCore.Arguments
{
internal class OutputTeeArgument : IOutputArgument
{
private readonly FFMpegMultiOutputOptions _options;
public OutputTeeArgument(FFMpegMultiOutputOptions options)
{
if (options.Outputs.Count == 0)
{
throw new ArgumentException("Atleast one output must be specified.", nameof(options));
}
_options = options;
}
public string Text => $"-f tee \"{string.Join("|", _options.Outputs.Select(MapOptions))}\"";
public Task During(CancellationToken cancellationToken = default) => Task.CompletedTask;
public void Post()
{
}
public void Pre()
{
}
private static string MapOptions(FFMpegArgumentOptions option)
{
var optionPrefix = string.Empty;
if (option.Arguments.Count > 1)
{
var options = option.Arguments.Take(option.Arguments.Count - 1);
optionPrefix = $"[{string.Join(":", options.Select(MapArgument))}]";
}
var output = option.Arguments.OfType<IOutputArgument>().Single();
return $"{optionPrefix}{output.Text.Trim('"')}";
}
private static string MapArgument(IArgument argument)
{
if (argument is MapStreamArgument map)
{
return map.Text.Replace("-map ", "select=\\'") + "\\'";
}
else if (argument is BitStreamFilterArgument bitstreamFilter)
{
return bitstreamFilter.Text.Replace("-bsf:", "bsfs/").Replace(' ', '=');
}
return argument.Text.TrimStart('-').Replace(' ', '=');
}
}
}

15
FFMpegCore/FFMpeg/FFMpegArguments.cs
View file

@ -71,6 +71,21 @@ private FFMpegArgumentProcessor ToProcessor(IOutputArgument argument, Action<FFM
return new FFMpegArgumentProcessor(this);
}
public FFMpegArgumentProcessor OutputToTee(Action<FFMpegMultiOutputOptions> addOutputs, Action<FFMpegArgumentOptions>? addArguments = null)
{
var outputs = new FFMpegMultiOutputOptions();
addOutputs(outputs);
return ToProcessor(new OutputTeeArgument(outputs), addArguments);
}
public FFMpegArgumentProcessor MultiOutput(Action<FFMpegMultiOutputOptions> addOutputs)
{
var args = new FFMpegMultiOutputOptions();
addOutputs(args);
Arguments.AddRange(args.Arguments);
return new FFMpegArgumentProcessor(this);
}
internal void Pre()
{
foreach (var argument in Arguments.OfType<IInputOutputArgument>())

29
FFMpegCore/FFMpeg/FFMpegMultiOutputOptions.cs Normal file
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@ -0,0 +1,29 @@
using FFMpegCore.Arguments;
using FFMpegCore.Pipes;
namespace FFMpegCore
{
public class FFMpegMultiOutputOptions
{
internal readonly List<FFMpegArgumentOptions> Outputs = new();
public IEnumerable<IArgument> Arguments => Outputs.SelectMany(o => o.Arguments);
public FFMpegMultiOutputOptions OutputToFile(string file, bool overwrite = true, Action<FFMpegArgumentOptions>? addArguments = null) => AddOutput(new OutputArgument(file, overwrite), addArguments);
public FFMpegMultiOutputOptions OutputToUrl(string uri, Action<FFMpegArgumentOptions>? addArguments = null) => AddOutput(new OutputUrlArgument(uri), addArguments);
public FFMpegMultiOutputOptions OutputToUrl(Uri uri, Action<FFMpegArgumentOptions>? addArguments = null) => AddOutput(new OutputUrlArgument(uri.ToString()), addArguments);
public FFMpegMultiOutputOptions OutputToPipe(IPipeSink reader, Action<FFMpegArgumentOptions>? addArguments = null) => AddOutput(new OutputPipeArgument(reader), addArguments);
public FFMpegMultiOutputOptions AddOutput(IOutputArgument argument, Action<FFMpegArgumentOptions>? addArguments)
{
var args = new FFMpegArgumentOptions();
addArguments?.Invoke(args);
args.Arguments.Add(argument);
Outputs.Add(args);
return this;
}
}
}