This is not a new issue, as this is the same
functionality we have
provided for years on the File: page. But Media Viewer makes it a lot
easier for users to accidentally load a huge file. So I think we
should seriously consider providing a warning, if it is easy to implement
and if we can identify a threshold that is based on data and that is
acceptable to our communities.
See [[bugzilla:29967]], “ Better support for viewing and downloading large
files” <https://bugzilla.wikimedia.org/show_bug.cgi?id=29967>
--
Jean-Fred