public override List<StreamIdentifier> SetupTemplate(FFmpegCommand command, List<StreamIdentifier> streamIdList)
{
if (streamIdList.Count != 2)
{
throw new InvalidOperationException("Crossfade Concatenate requires two input video streams.");
}
var streamTo = streamIdList[1];
var streamFrom = streamIdList[0];
//grab the current length of the streamId specified
var streamFromMetadata = MetadataHelpers.GetMetadataInfo(command, streamFrom);
//from ==
// - split
// - 1: start -> (end - durationOf)
// - 2: (end - durationOf) -> end
//to ==
// - split
// - 1: start -> (start + durationOf)
// - 2: (start + durationOf) -> end
//blend ==
// - from:2 / to:1
//output ==
// - (from:1, blend, to:2)
var endMinusDuration = streamFromMetadata.VideoStream.VideoMetadata.Duration - Duration;
var fromSplit = command.Select(streamFrom)
.Filter(Filterchain.FilterTo<VideoStream>(new Split(2)));
var fromMain = fromSplit.Take(0)
.Filter(new TrimVideo(null, endMinusDuration.TotalSeconds, VideoUnitType.Seconds));
var fromBlend = fromSplit.Take(1)
.Filter(new TrimVideo(endMinusDuration.TotalSeconds, null, VideoUnitType.Seconds));
var toSplit = command.Select(streamTo)
.Filter(Filterchain.FilterTo<VideoStream>(new Split(2)));
var toBlend = toSplit.Take(0)
.Filter(new TrimVideo(null, Duration.TotalSeconds, VideoUnitType.Seconds));
var toMain = toSplit.Take(1)
.Filter(new TrimVideo(Duration.TotalSeconds, null, VideoUnitType.Seconds));
var blendOut = command.Select(toBlend.StreamIdentifiers)
.Select(fromBlend.StreamIdentifiers)
.Filter(Filterchain.FilterTo<VideoStream>(new Blend(string.Format(CrossfadeAlgorithm, Duration.TotalSeconds))));
var result = command.Select(fromMain.StreamIdentifiers)
.Select(blendOut.StreamIdentifiers)
.Select(toMain.StreamIdentifiers)
.Filter(Filterchain.FilterTo<VideoStream>(new Concat()));
return result.StreamIdentifiers;
}
public override List<StreamIdentifier> SetupTemplate(FFmpegCommand command, List<StreamIdentifier> streamIdList)
{
if (streamIdList.Count != 1)
{
throw new InvalidOperationException("Crossfade Concatenate requires two input video streams.");
}
//trim ==
// - trim filter
// - reset PTS filter
var result = command.Select(streamIdList)
.Filter(Filterchain.FilterTo<VideoStream>(TrimFilter, new SetPts(SetPtsExpressionType.ResetTimestamp)));
return result.StreamIdentifiers;
}
public override List<StreamIdentifier> SetupTemplate(FFmpegCommand command, List<StreamIdentifier> streamIdList)
{
if (streamIdList.Count > 1)
{
throw new InvalidOperationException("Pulsate requires one input video stream.");
}
if (FrameRate <=0)
{
throw new InvalidOperationException("Pulsate requires frame rate > 0.");
}
var streamFrom = streamIdList[0];
//output ==
// - (zoom-in, zoom-out)
int zoomFrameDuration = Convert.ToInt32(Duration.TotalSeconds * 0.5 * FrameRate); // it's a half for zoom-in and another half for zoom-out
//var zoomFrameDuration = 100;
var streamSplit = command.Select(streamFrom)
//.WithInput<VideoStream>(BackgroundImagePath,SettingsCollection.ForInput(new DurationInput(Duration)))
//.Filter(new TrimVideo(null, Duration.TotalSeconds * 0.5, VideoUnitType.Seconds))
//.Filter(Filterchain.FilterTo<VideoStream>(new Fps(FrameRate),new Scale(Convert.ToInt32(meta.Width * 1.3), Convert.ToInt32(meta.Height * 1.3))))
.Filter(new TrimVideo(null, Duration.TotalSeconds * 0.5, VideoUnitType.Seconds))
.Filter(Filterchain.FilterTo<VideoStream>(new Split(2)));
var zoomIn = streamSplit.Take(0)
.Filter(Filterchain.FilterTo<VideoStream>(new ZoomPan("'min(zoom+0.1,1.2)'", zoomFrameDuration, "'iw/2-(iw/zoom/2)'", "'ih/2-(ih/zoom/2)'")))
;
var zoomOut = streamSplit.Take(1)
.Filter(Filterchain.FilterTo<VideoStream>(new ZoomPan("'if(lte(zoom,1.0),1.2,max(1.001,zoom-0.1))'", zoomFrameDuration, "'iw/2-(iw/zoom/2)'", "'ih/2-(ih/zoom/2)'")))
;
var streamFromMetadata = MetadataHelpers.GetMetadataInfo(command, streamFrom);
var meta = streamFromMetadata.VideoStream.VideoMetadata;
var zoom = command
.Select(zoomIn.StreamIdentifiers)
.Select(zoomOut.StreamIdentifiers)
.Filter(Filterchain.FilterTo<VideoStream>(new Concat()))
.Filter(Filterchain.FilterTo<VideoStream>(new Scale(meta.Width, meta.Height)))
.Filter(new TrimVideo(null, Duration.TotalSeconds, VideoUnitType.Seconds))
;
//var nsrc = new Color();
////nsrc.Duration = Duration;
//nsrc.FrameRate = FrameRate;
//nsrc.Size = new System.Drawing.Size(Convert.ToInt32(meta.Width * 1.25), Convert.ToInt32(meta.Height * 1.25));
var overlay = new OverlayEx();
overlay.X = "W/2-w/2";
overlay.Y = "H/2-h/2";
overlay.Format = OverlayVideoFormatType.Rgb;
var result = command
//.WithInput<VideoStream>(BackgroundImagePath,SettingsCollection.ForInput(new DurationInput(Duration)))
//.Filter(new TrimVideo(null, Duration.TotalSeconds * 0.5, VideoUnitType.Seconds))
//.Filter(Filterchain.FilterTo<VideoStream>(new Fps(FrameRate),new Scale(Convert.ToInt32(meta.Width * 1.3), Convert.ToInt32(meta.Height * 1.3))))
.Select(zoom.StreamIdentifiers)
//.Filter(Filterchain.FilterTo<VideoStream>(overlay))
;
return result.StreamIdentifiers;
}