canvas: adding image service to canvas

[jronallo]

For the IIIF canvas output how would you add an image service?

I'd eventually like to have an image service that can return frames
from the video, but for now I've just included a single static poster
image as a thumbnail. I'm not sure how I'd provide a service like that
yet, though I had prototyped something in my image server. One way to
start with creating an image service that just provides full images
for the various sizes that are provided with the various adaptations.
Or could a list of poster image choices with width & height just be
provided somehow? I'm not sure what an info.json would look like for
non-tiled images. Are there any Image API examples out in the wild
that only provide a few static images?

See an example canvas here: https://gist.github.com/jronallo/b455a5ddab2ce4b28d55c7708603f85a

[jronallo]

Here's an example of a tile-less IIIF image service: http://tomcrane.github.io/scratch/osd/iiif-sizes.html

[jronallo]

From @jbaiter this example that demetsiiify generates:
https://demetsiiify.jbaiter.de/iiif/image/aJU95Lf2jj5K7CK7LYAecD/info.json