Function id3_image::embed_image

pub fn embed_image(
    music_filename: &Path, 
    image_filename: &Path
) -> Result<(), Box<dyn Error>>

Embed the image from image_filename into music_filename, in-place. Any errors reading ID3 tags from the music file or parsing the image get propagated upwards.

The image is encoded as a JPEG with a 90% quality setting, and embedded as a "Front cover". Tags get written as ID3v2.3.