$12256 / $11500
One thing that plagues me when it comes to downloading CC BY assets, or prospecting to buy commercially available assets is: how I know when the players of my game have a right to screenshot and display screenshots of my game.
If I make a game with CC BY assets then does everybody who makes screenshots or game footage with those assets visible have to credit the asset author?
If I buy a licence to assets that say "no sublicences" then does that mean that I can't give people a licence to use their screenshots?
For example, Sketchfab's
"You may not use the 3D asset in a way that allows others to use or access the 3D asset as a stand-alone file (for instance, no sub-license or sale by you to others is allowed). For similar reasons, you may not distribute the 3D asset incorporated in a derivative work if the derivative work is too similar to the 3D asset (for instance, you may not print a 3D asset or a slightly modified version of it and sell it)."
Should I ask everybody I get assets from in order to make sure? Or is it just safe to assume that everybody agrees that games are subjected to screenshots and so it's OK for players to take and display screenshots on their blogs and stuff?
Under such a licence (Sketchfab's), can I let players make screenshots and footage for commercial purposes (Ie,journalism, lets plays and streams with adverts) or is that different? Could I make renders that other people could use commercially?
I already asked Sketchfab to clarify their position on this issue, but I'm concerned that I may be missing a social cue that it's "obviously OK" for people to take screenshots of my product.
This website's content is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
The first question is: what are your players using the screenshots/footage for?
In all likelihood, those screenshots are covered by fair-use, but that's assuming they're not planning to make their own game from the screenshots. Blogs and let's-play videos (even commercial ones) are generally considered fair use, but it's still up to the blogger/twitch-streamer/YouTuber to make that determination, not you. I will say that CC-BY et al is almost certainly less risky for such 3rd party content creators than ANY proprietary licensed content such as the stuff in AAA commercial games. So if they are making content from Minecraft gameplay footage, making the same or similar content from your game that uses CC-BY(-SA) is even safer for them.
Fair-Use aside, yes your players would have to give proper attribution to all the appropriate artists for any screenshots or footage they use in a non-fair-use context. However, it is not your responsibility to patrol what other people do with assets you also happen to use. If you follow the terms of the license, but your players violate copyright, you won't get in trouble for it. They will. You aren't encouraging them to violate copyright just by (properly) using assets.
I can't speak about proprietary licenses. They're all different so no generalized information provided here would apply to such licenses or EULAs.
--Medicine Storm