Dear Fastily, Welcome to MediaWiki.org!
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Please, take a look at the following pages. They might prove useful to you as a newcomer here:
If you have any questions, please ask me on my talk page. Once again, welcome, and I hope you quickly feel comfortable here, and find this site useful documentation of the MediaWiki software.
Thanks, and regards, --Katarighe 21:47, 1 February 2012 (UTC)
Adding img_id and oi_img_id
You may be interested in bug 71198, which would add img_id and oi_img_id. That way, you could do a prop=imageinfo query that would grab the image info for, say, 500 or 5,000 images, which you would specify using an imgid parameter. Later, of course, it will be a prop=fileinfo query. Leucosticte (talk) 19:43, 24 September 2014 (UTC)