Hi to all
First off I take no credit for this info, I have just put various bits into one post.
Obtain a picture
Open in Photoshop or other editor
Resize to 800 x 1200
Save as BASELINE standard (in photoshop)
Place in “movie” folder i.e Aliens
If movie is anything other than Video_ts file rename the jpg the same as the movie i.e Alien.avi (movie file) Alien.jpg (picture file)
If the movie file is Video_ts rename the picture file Folder.jpg
Hope this is of some help.