Custom Mixes possible?

Is it possible to use own XML Mix descriptors which allow creating complex own image compositions for scraping?

First of all, hello.

With the internal scrappers, it's not possible, as each tag import one media only. Mix v1 & v2 are predefined mix from screenscraper.com
But you can use external scrappers like ARRM, and choose your mix

Thanks for your answer. That would be nice if it could be possible in the future (Feature request). In the meanwhile I take a look at the external scraper you have mentioned.