Converting Tif file with 2 alpha channels yields scrambled result. #1523
Description
Magick.NET version
Magick.NET-Q8-AnyCPU 13.5.0
Environment (Operating system, version and so on)
MS Windows11 [Version 10.0.22631.3007] ; .NET Core 3.1
Description
When the tiff file (from the link provided in the Reproduction steps) is converted to jpg, the result looks scrambled.
The Tif file is an RGB with two alpha channels; in the image.Channels they appear as "Alpha" and "Meta0". Other tif files I tried (with just a single alpha channel) cause no problem.
The file was processed correctly with Magick.NET 11.0.0. The problem started after upgrading to 11.1.0. and still exists in 13.5.0.
Steps to Reproduce
Download sample file from: https://drive.google.com/file/d/185VJjumyKpmrHFSCMlbR9nleIhXnra6f/view?usp=sharing
Code sample to read and store the image: `
private static void ProcessFileToJpgSample(string fileName, string outputPath, string batchId)
{
var image = new IM.MagickImage();
image.Read(fileName);
image.Format = MagickFormat.Jpg;
// Store
var fileInfo = new FileInfo(fileName);
string outputFileName = $@"{fileInfo.Name}_{batchId}.jpg";
image.Write($@"{outputPath}{outputFileName}");
}
`
Storing the file as Png or keeping as tif does not make a difference.