JPEG encoding is incorrect

[nashaofu]

Save as JPEG does not meet the expectations.

Expected

Expect the image to display correctly

Actual behaviour

Image encoding error

Reproduction steps

Provide source code, a repository link, or steps

use image;

fn main() {
    let im = image::open("input.png").unwrap();
    im.save("output.jpeg").unwrap();
}

• input.png
  
• output.jpeg
  

[gucki]

Thank you @nashaofu! After reading through other issues, it seems to be a duplicate of #2173. Converting it to a DynamicImage, then to_rgb8, and then saving it as JPG works as expected.

[nashaofu]

Get