Convert Image from GIF To JPEG

Question

I had to convert GIF to JPEG. I had to save the bytes to image then reopen it and convert it to JPEG. I tried to change the type using two streams but I got error "A generic error occurred in GDI+". Is there any explanation for this?

    public static byte[] GetJpegBytes(byte[] bytes)
    {
        using (var stream = new MemoryStream(bytes))
        {
            var temporaryImage = $"{Path.Combine(System.Web.HttpRuntime.AppDomainAppPath, Guid.NewGuid().ToString())}.jpeg";
            var image = Image.FromStream(stream);

            image.Save(temporaryImage, ImageFormat.Jpeg);
            using (var memoryStream = new FileStream(temporaryImage, FileMode.Open))
            {
                byte[] byteRsult = new byte[memoryStream.Length];
                memoryStream.Read(byteRsult, 0, (int)memoryStream.Length);
                memoryStream.Close();
                File.Delete(temporaryImage);
                return byteRsult;
            }
        }

    } 

Answer 1

You can use this extension for convert format image I use this simple extension to convert a stream.

public static Stream ConvertImage(this Stream originalStream, ImageFormat format)
{
          var image = Image.FromStream(originalStream);

               using(var stream = new MemoryStream())
           {
                image.Save(stream, format);
                stream.Position = 0;
                return stream;
           }
    }

usage:

var outputStream = stream.ConvertImage(ImageFormat.Png);