Hi, Marcel.
You contradict yourself :)
If you add the Jomsocial menu items my video and my photo and my group... Videos, photos and groups are accessible for the public... Thats what i want... All videos, photos and groups open for the public and Google...
But this my video my photo and my groups links should be ALWAYS set for registered users anyway... Because in the normal world in communities people have an registered account so to see MY videos the user needs to login anyway...
Let me explain how it works. If you create menu item in Joomla! menus system assign menu item ID to certain menu item. Thanks to it system can controls access to certain menu item ID and could display e.g modules for that ID. If a link in Joomla! doesn't have menu item ID no module could be assigned to it.
So creating menu item for Videos you assign to it a menu item ID. And this ID is inherited by all links in internal navigation in JomSocial (Videos section). So setting certain access level for this menu item will be affecting with inheriting it by internal links.
Furthermore you say that users needs to login to see "My" (their) videos. Well every video belongs to someone (are "my") so following your way of thinking in order to see them user HAVE to log in... so no video is public.
The only solution to this is setting Video section as public and let users to decide of access level for their videos... or set Videos section to public but all uploaded or shared videos should have only Members, Friends me access options. So video thumbnails and list will be available bot to watch video guest needs to register.