Yes, when using a query, you cannot sort manually anymore, that’s the downside.
The only way out of this dilemma would be to:
- assign the same blueprint to all files that should be in the section, while moving the posters to a separate section. Downside: You would have to use conditions in your file blueprint to show video fields for videos and image fields for images.
or
- Use separate sections per file type and add an additional files field where you would select and sort manually the files you want to see in the gallery.