About compression format

[jueqing1015]

@dlemstra
I need to use YUV4:4:4 now, how do I set it up?

[dlemstra]

Are you talking about using 4:4:4 Chrome Subsampling? You can set the JpegSamplingFactor with the JpegWriteDefines and pass that to the Write method.

[jueqing1015]

Ok, I don’t know if the 4:4:4 Chrome Subsampling you are referring to is the same as what I’m talking about. I’m talking about JPEG YUV4:4:4. If it’s the same, how can I use it in MAGICK.NET. I didn't find how to use it. Thank you

[dlemstra]

It this what you are looking for:

using (var image = new MagickImage("yourImage"))
{
    image.Write("output", new JpegWriteDefines
    {
        SamplingFactor = JpegSamplingFactor.Ratio444
    });
}