I've not tried the FTP option - partly because I'm FTP-ing to my own site already. (I could kluge up something of course.) The URL approach has been working with WU for years but has stopped of late. That option is still available, though the maintenance page has been very
flaky for me - sometimes only the header renders in Chrome when I try to load it.
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The image I upload is unchanged from a process perspective, and still uploading reliably to
http://www.dillys.org/WX/NW_05.jpg (which is 50% of the native camera image for WU's benefit). I create my own, rather large videos as gifs, so I am quite sure the images have been there. I just added some additional logging to further verify the reduced image is updated every 5 minutes. It has been.
I'm also having issues with the WX data which have gotten way worse over the past week or so. A report about the camera has gone unanswered for several days. Certainly leaves me with the strong impression that Weather Underground is
running on auto-pilot at best...