Trickplay on Roku

[He-who-is-tired]

The catch is that after you change the trickplay grid size then you need to delete any existing trickplay image grids and regenerate the trickplay grid for this to be effective.  I have the option set on my libraries so that the Trickplay images are stored at the same location as my library, but the Jellyfin default stores the trickplay images somewhere else (https://forum.jellyfin.org/t-trickplay-a...e-location).  

The point is, to test you can delete the trickplay images for a single show and then go into "Scheduled Tasks" and initiate "Generate Trickplay Images" to regen the trickplay images for that single show using the smaller trickplay grid, and then verify that it works on your Roku.  If it does, then you would need to delete all of your trickplay images for everything, initiate the trickplay image generation, and wait for it to complete for all shows using the smaller grid size - which could take quite some time if you have a lot of shows.

If you do not have the trickplay images stored at the same location as the library, how do you go about deleting images for either a given show or for all shows?  I have not yet enabled trickplay, but it sounds great.  I am somewhat leery of having thousands of new images within .../metadata/library, is the mechanism for managing trickplay-related files pretty sound, should I perhaps hold off to see if any further options are offered for where images are stored?

I have my libraries mounted as read-only for Jellyfin and prefer it store its metadata separately; I do that when trialling any media-manager type software so that when I decide to switch from say, plex to jellyfin, the now-defunct media manager files can all be cleanly jettisoned.

Thanks for any insight!