https://bugzilla.wikimedia.org/show_bug.cgi?id=17645

--- Comment #24 from Tim Starling <[email protected]> ---
(In reply to comment #19)
> Since when does a single programmer get to set policy for the entirety of
> Wikimedia?

Since before it was called Wikimedia. That's not to say it's a good
decision-making system. I'm happy to hear other opinions or for others to
submit patches in this area. 

> Progressive JPEGs are going to be uploaded whether you want them to be or
> not.

It's not ideal to have bots convert them. I would prefer it if they were
rejected on upload.

> And don't say you haven't changed policy. You put a demand on all Wikimedia
> users that they do a certain thing a certain way, even though the other way
> works. That's a policy change. It's even listed at the Commons Help:JPEG.

Sure, changing policy is a hack, in the absence of a feature which would reject
these files on upload.

If they were rejected on upload, then we could set a threshold based on
available server memory, instead of having bot authors guess at what that
threshold should be.

(In reply to comment #22)
> Furthermore, thumbnailing a progressive JPEG often requires less of the JPEG
> to be rendered, since you only have to render up to the resolution just above
> the thumbnail. Progressive JPEGs essentially have their own thumbnails 
> baked in.

Maybe if the browsers or the image scaling software we use took advantage of
this, then you would have a point. But as it stands, it's not really a good
subject for a bug against MediaWiki. It would be a good subject for a bug
against ImageMagick.

> There are multiple solutions that could deal with this problem without
> causing significant drain on the system. Most of them came in after
> the guy arbitrarily closed the bug without waiting for ideas on how 
> to mitigate the problems. 

Everyone should feel free to submit ideas about bugs that are closed "WONTFIX". 

> A bug should be left open if it is legitimate. 

I think WONTFIX was an appropriate way to describe the situation.

> Closing the bug prevents
> anyone else from coming up with a solution that mitigates all problems.

By what mechanism? It's not like we're preventing comments on the bug, or
telling upstream projects like libvips or ImageMagick to reject your patches.

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