[Feature] Custom options for scrubber generation

[stg-annon]

Is your feature request related to a problem? Please describe.

A user may want to use a custom interval for the scrubber sprite they want to use, similar to how they are currently able to customize the preview generation video.

This may be even more useful with auto tagging tools that utilize the scrubber sprite with image recognition like StashTag

potential options might look like:

• resolution
• exclude start
• exclude end
• image interval

Describe the solution you'd like

options within stash to customize how the scene sprite image is generated

Describe alternatives you've considered

plugin or script that might replace the sprite image with a custom one but this may present stash with an unexpected format and cause issues where if stash is aware of the possibility of custom formats this would not be an issue

[WeedLordVegeta420]

As someone with a lot of longer 2+ hour videos, having control over the interval would be nice. My assumption though is that if you have this customization, you would still have to always generate the default sprite since I believe it is used for the phash generation.

[DogmaDragon]

@WeedLordVegeta420 pHash and sprites generation are not related.

[WeedLordVegeta420]

@DogmaDragon Ah. I do see now looking at the code that it generates its own sheet for generating the phash.

[IAmKontrast]

Feature would be also useful for #4022