private async Task <string> EncodeAsync(Func <Task <ThumbnailExtractionResult> > extractFunc)
{
var result = await extractFunc();
File.Delete(ThumbnailPath);
using (var encoder = new JpegEncoder())
using (var fs = File.Create(ThumbnailPath))
{
encoder.SetColorSpace(ColorSpace.Bgra8888);
encoder.SetResolution(result.Size);
await encoder.EncodeAsync(result.RawData, fs);
return(ThumbnailPath);
}
}