Import images from RSS with Feeds module without Feeds Image Grabber

I'm passing all the sites from D7 to D8 and so far so good. But one of my sites gives me a couple of problems.

I was populating the RSS site in Drupal 7 using Feeds Image Grabber. Now, Feeds Image Grabber for Drupal 8 is not there. So how do I get RSS images then?

I read that maybe you can do it with the Feeds extensible parsers module.

Any advice?