imgproxy for jellyfin

[dilyo]

Why?
- Wanted to test it, and use some imgproxy options
- Jellyfin felt sometimes slow with larger images
- imgproxy uses libvips know to be very fast/efficient

Downside
- Complexity

Upside
- fast
    - Uncached/cold 600 ms vs 80 ms (30 images from 500 2000ms vs )
    - Cached 10 ms vs 0-1ms (30 images 10-15ms vs 0-1ms)
- Max image size
- easy nginx cache
 
Setup
- jellyfin
- nginx with -f to check file path (tried auth_digiest, but never got retrun header in nginx, feels like a bug in nginx)
- small proxy with readonly on jellyfin.db to resolve urls
- imgproxy container
- Storage /var/lib/jellyfin/metadata

Modes code to GitHub, because forum code formation is awful
https://github.com/jfhacks/jellyfin-imgproxy

Just wanted t share it, because I looked for something like this and found nothing.

[TheDMV]

I've been complaining about the large image sizes for years now, to no avail. The default jpg compression is set to 96, which makes huge images. Going to 45-75 would make a big difference - but this works too.

[dilyo]

Yeah, noticed images are so heavy on slower clients and high-res images are slow with Jellyfin resize. Also, it enforces some limits and formats + quality.

Moved it to GitHub, because code blocks are pain.
https://github.com/jfhacks/jellyfin-imgproxy

Used it only for myself so far, so docu is mixed at best. But it should work.