private void UpdateCropSizeInfo()
{
if (inputFile == null)
{
labelCropSize.Text = "";
return;
}
if (PictureConfig.IsCropped())
{
labelCropSize.Text = $"{PictureConfig.InputDisplaySize.ToString()} → {PictureConfig.CropSize.ToString()}";
}
else
{
labelCropSize.Text = "";
}
}
/// <summary>
/// Create content for "vf" argument
/// </summary>
/// <param name="subtitlesPath"></param>
/// <returns></returns>
private string GetVideoFilters(string subtitlesPath)
{
List <string> filters = new List <string>();
// https://ffmpeg.org/ffmpeg-filters.html#yadif-1
if (PictureConfig.Deinterlace)
{
filters.Add($"yadif=parity={PictureConfig.FieldOrder}");
}
// https://ffmpeg.org/ffmpeg-filters.html#crop
if (PictureConfig.IsCropped())
{
// using oar
int cropW = PictureConfig.InputOriginalSize.Width - PictureConfig.Crop.Left - PictureConfig.Crop.Right;
int cropH = PictureConfig.InputOriginalSize.Height - PictureConfig.Crop.Top - PictureConfig.Crop.Bottom;
filters.Add($"crop={cropW}:{cropH}:{PictureConfig.Crop.Left}:{PictureConfig.Crop.Top}");
}
// https://ffmpeg.org/ffmpeg-filters.html#scale-1
if (PictureConfig.OutputSize.Width != PictureConfig.CropSize.Width || PictureConfig.OutputSize.Height != PictureConfig.CropSize.Height)
{
// https://www.ffmpeg.org/ffmpeg-scaler.html#sws_005fflags
filters.Add($"scale={PictureConfig.OutputSize.Width}x{PictureConfig.OutputSize.Height}:flags={PictureConfig.Interpolation}");
}
else if (PictureConfig.IsUsingDAR())
{
// force scale for not square pixels
filters.Add($"scale={PictureConfig.CropSize.Width}x{PictureConfig.CropSize.Height}:flags={PictureConfig.Interpolation}");
}
// https://ffmpeg.org/ffmpeg-filters.html#pad-1
/*if (PictureConfig.Padding.X > 0 || PictureConfig.Padding.Y > 0)
* {
* filters.Add($"pad={PictureConfig.SelectedSize.Width}:{PictureConfig.SelectedSize.Height}:{PictureConfig.Padding.X}:{PictureConfig.Padding.Y}");
* }*/
// https://ffmpeg.org/ffmpeg-filters.html#transpose
if (PictureConfig.Rotate == 180)
{
filters.Add("transpose=2,transpose=2");
}
else if (PictureConfig.Rotate == 90)
{
filters.Add("transpose=1");
}
else if (PictureConfig.Rotate == 270)
{
filters.Add("transpose=2");
}
// https://ffmpeg.org/ffmpeg-filters.html#hflip
if (PictureConfig.Flip)
{
filters.Add("hflip");
}
// Set subtitles
// https://trac.ffmpeg.org/wiki/HowToBurnSubtitlesIntoVideo
if (!string.IsNullOrWhiteSpace(subtitlesPath) && File.Exists(subtitlesPath))
{
// https://ffmpeg.org/ffmpeg-filters.html#Notes-on-filtergraph-escaping
filters.Add($"subtitles={subtitlesPath.Replace("\\", "\\\\\\\\").Replace("'", "\\\\\\'").Replace(":", "\\\\:").Replace(",", "\\,")}");
}
// force sar 1:1
// https://ffmpeg.org/ffmpeg-filters.html#setdar_002c-setsar
filters.Add("setsar=sar=1/1");
// color filter
// https://ffmpeg.org/ffmpeg-filters.html#colorchannelmixer
if (PictureConfig.ColorChannelMixerList.ContainsKey(PictureConfig.ColorFilter))
{
filters.Add($"colorchannelmixer={PictureConfig.ColorChannelMixerList[PictureConfig.ColorFilter]}");
}
return(string.Join(",", filters));
}