Link is a 1h42m video interview between Louis Rossmann, FUTO and Immich developers with a introduction to Immich by Louis.
Immich is an open source self-hosted in-development tool to manage image libraries from a central server, and sync/distribute them across your devices, as an alternative to Google Photos. Also see: https://immich.app
The important news here is that FUTO has funded full time development on Immich for 3 years.
Louis discusses his experience with Nextcloud in the first portion of the video.
For him, Nextcloud’s gallery app runs much slower than Immich. The Nextcloud app only supports proxy image previews but no proxy video previews, which Immich does.
Memories and Gallery (actually deprecated by photos) are not the same thing, just to clarify. I’m not in a position to agree or disagree with any of the statements here since I’ve never used immich, but I don’t want people to think that the default photo viewer in nextcloud is what was being discussed here.