DatBot issueEdit

DatBot is reporting users to AIV for edit filter abuse 2 days later, even if they were blocked at the time [1]. I just removed a bunch of reports, but I haven't seen something like this before and wanted to give you a heads up. Best, SpencerT•C 18:13, 17 September 2020 (UTC)

non-free file reduction taskEdit

Hi. I've noticed the task hasn't still yet resumed, though I noticed you said you would look at it in July. Do you have any update when the task might restart? Dreamy Jazz talk to me | my contributions 23:00, 19 September 2020 (UTC)

I was also going to ask about an unfulfilled request for a non-free image reduction... I'm guessing there may be an issue with the bot then? Muzilon (talk) 21:09, 22 September 2020 (UTC)
Muzilon, it hasn't run since the 11th of July and from User_talk:DatGuy/Archives/2020/August it seems like there is an issue with it. I'm guessing there is still an issue with said task, but the bot itself is still running. Dreamy Jazz talk to me | my contributions 21:01, 24 September 2020 (UTC)
I'm running normal resizing automatically and then will go one-by-one for SVGs to make sure it's all fine. Dat GuyTalkContribs 21:58, 24 September 2020 (UTC)
Normal is taking longer than expected so I'll do the SVGs tomorrow. Dat GuyTalkContribs 23:45, 24 September 2020 (UTC)
Thanks! Good to see the task running again. Dreamy Jazz talk to me | my contributions 00:13, 25 September 2020 (UTC)
I don't know why that is the case. I reverted the sizing to 141 × 152 as that was too small. For .svg files the actual size of the display hardly makes a difference to minimal use. Instead a .svg reduction should be removing small detail. But for logos there probably isn't any. Graeme Bartlett (talk) 21:53, 25 September 2020 (UTC)

Poor quality JPEG reduction by DatBot?Edit

Hi DatGuy, I recently noticed that when DatBot reduced the size of File:Eligible novel cover.jpg, it seems to have used a low value for JPEG quality. The compression artifacts are pretty noticeable, and I ended up manually resizing it myself to replace the DatBot version. Granted, the image in question features a solid-color background and is a bit of an edge case for compression, but I had previously just assumed the bot always used quality=100. Is this intended behavior? Thanks, IagoQnsi (talk) 18:30, 25 September 2020 (UTC)

@IagoQnsi: The bot resizes it with a Lanczos filter, which as far as I know is the best. The quality thereafter is set to 95, as the documentation states that "values above 95 should be avoided; 100 disables portions of the JPEG compression algorithm, and results in large files with hardly any gain in image quality." Dat GuyTalkContribs 19:34, 25 September 2020 (UTC)
I would tend to disagree with that bit of the documentation -- if you compare my second upload to DatBot's upload, there's a significant difference. Serving a compressed version for end users is MediaWiki's job; there's no real need for uploaders to try to reduce file size. –IagoQnsi (talk) 20:41, 25 September 2020 (UTC)

Bot malfunctionEdit

Hi - I believe your bot keeps continually distorting File:Newspaper Carriers, Columbus, Ohio.jpg, thought you should know. ɱ (talk) 14:54, 27 September 2020 (UTC)

It may have something to do with the rotation in the metadata. I've manually reduced it. — JJMC89(T·C) 18:26, 27 September 2020 (UTC)

Proposed deletion of File:California Deluxe - Blink-182.jpgEdit

 

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