Probably a change IMBd have done. I'll look into it.
I did some tests and checking, and found for one Series, the posters were all over the place in size from the source TMDb, as well as TVDB. Just to be clear, MC does not upscale images, os if you have a poster at source that is 771 x 1100, MC will not upscale to 1000x1500. But it will downscale a 2000x3000 poster to the set size of 1000x1500. As for Actor images, TMDb supplies larger actor images than TVDb. MC returned Peter Dinklage from TMDb at 1000x1500, but TVDb only supplied actor images at...
Nothings changed in that section, haven't had to go into the resized code in some time. I'll check it out soon, but can you test by changing the realize to another setting, and download a poster, then change back to your preferred sizing and download a new poster.
Movie - Add Rescrape specific option rescrape extra fanart/thumb images.
So Extrathumb folder are only created if and when there is an image to be saved, and the folder doesn't exist. Creating an empty folder is as a place-holder is not productive, just another folder to open and check by MC. MC checked to see if the folder exists, if not, continues to next movie. So at this time, no, MC will not be creating an empty folder.
Rescrape Specific -> Rescrape Extra Fanart/Thumbs Has been added to the context menu. Will be in the next release of MC
Worked on this function today, will be in the next release. New option in Music Video Preferences, prefer MusicVideo section over Overview.
MV - Improve retrieval from WikiPedia. MV = Add option to prefer Music Video section from Wikipedia over Overview.