Failed to save with Exif and IPTC data - Failed to save with Exif and IPTC data

	public class Program
    {
        public static void Main(string[] args)
        {
            var sourceImageData = File.ReadAllBytes("where_the_file_is");
				
			using (MemoryStream ms = new MemoryStream(sourceImageData))
			{
				var metadatas = GetMetadata(ms);
				var orgExif = metadatas.Item1;
				var orgIptc = metadatas.Item2;
				ms.Position = 0;

				using (var rgbSourceStream = new MemoryStream())
				{
					using (var rawBitmap = new Aurigma.GraphicsMill.Bitmap(ms))
					{
						rawBitmap.ColorProfile = Aurigma.GraphicsMill.ColorProfile.FromSrgb();
						if (rawBitmap.PixelFormat.IsCmyk || rawBitmap.PixelFormat.IsGrayscale)
						{
							rawBitmap.ColorManagement.Convert(Aurigma.GraphicsMill.ColorSpace.Rgb, true, rawBitmap.PixelFormat.IsExtended);
						}

						// save metadata back
						JpegSettings encdr = new JpegSettings
						{
							Quality = 100,
							IsProgressive = false
						};
						
						// update author and copyright, but not applicable for this case, you can ignore the commented code
						//if (!is3rdParty)
						//{
						//	orgExif[Aurigma.GraphicsMill.Codecs.ExifDictionary.Artist] = _author;
						//	orgExif[Aurigma.GraphicsMill.Codecs.ExifDictionary.Copyright] = string.Format(_copyRightFormat, DateTime.Now.Year);
						//}
						
						encdr.Exif = orgExif;
						encdr.Iptc = orgIptc;

						try
						{
							rawBitmap.Save(rgbSourceStream, encdr);
						}
						catch (JpegMarkerException ex)
						{
							if (ex.Message.IndexOf("64K limit") != -1
								&& encdr.Exif != null && encdr.Exif[ExifDictionary.Thumbnail] != null)
							{
								encdr.Exif.Remove(ExifDictionary.Thumbnail);

								rawBitmap.Save(rgbSourceStream, encdr); // throws exception "EXIF data object is too big, its size exceeds 64K limit (that is defined by Jpeg standart for APP1 marker data)"
							}
							else
							{
								throw;
							}
						}
					}
					
					// do something else for rgbSourceStream....
				}
			}
        }
		
		private static System.Tuple<ExifDictionary, IptcDictionary> GetMetadata(MemoryStream msInput)
        {
            ExifDictionary orgExif;
            IptcDictionary orgIptc;

            try
            {
                using (var jpegReader = new JpegReader(msInput))
                {
                    orgExif = jpegReader.Exif ?? new ExifDictionary();
                    orgIptc = jpegReader.Iptc ?? new IptcDictionary();
                }
            }
            catch
            {
                try
                {
                    using (var tiffReader = new TiffReader(msInput))
                    {
                        orgExif = tiffReader.Exif ?? new ExifDictionary();
                        orgIptc = tiffReader.Iptc ?? new IptcDictionary();
                    }
                }
                catch
                {
                    // this is not a jepg format or tiff format file. We cannot get the Exif and Iptc data
                    orgExif = new ExifDictionary();
                    orgIptc = new IptcDictionary();
                }
            }
            return new System.Tuple<ExifDictionary, IptcDictionary>(orgExif, orgIptc);
        }
    }