Curiositystream serves its media as MP4, and that is exactly what you keep. The container is passed through rather than rebuilt, so there is no generation loss between what Curiositystream stored and what ends up in your downloads folder. Curiositystream supports signed-in sessions upstream, which is precisely how it hides private material; we browse anonymously, so that material stays hidden. The extractor covers 3 separate Curiositystream URL shapes, so a link copied from anywhere on the site usually resolves as-is. Curiositystream is handled by the media route, which reads the site's own rendition list before choosing anything.
Either paste a Curiositystream link above, or put tikt.com/ in front of any Curiositystream URL in your address bar:
tikt.com/https://www.example.com/path/to/media
What you actually have to do
1. Copy the Curiositystream link
Use the address bar or the platform's own share button — both give a URL the extractor recognises. Point it at the single item you want, not the page around it.
2. Let it read the renditions
Paste the URL above. The extractor asks Curiositystream which renditions exist for that item and picks the best progressive one rather than assuming a quality.
3. Save what comes back
The file arrives in the container Curiositystream served it in, and the extractor does not rebuild it — so what you end up with is what the uploader encoded, for better or worse.