Re:Ask HN: Alternatives to Google Photos?
by tompagenet2 on Monday May 31, 2021 @02:34AM
(#27340927)
Hey, PhotoStructure looks amazing. I'm intrigued. How and when does bitrot detection work? I couldn't find it on your site. I spend a decent amount of time making PAR2 volumes so I can detect failures as I've not come up with a better idea.
The bitrot detection is via libjpeg, libraw, and ffmpeg (to handle both photo and video validation): they can be run in verbose modes that can report decoding errors which are due to file truncation or outright corruption.
Re:Ask HN: Alternatives to Google Photos?
by tompagenet2 on Monday May 31, 2021 @02:52PM
(#27347056)
Wow - this sounds amazing. How does one set it up; does it automatically occur?
Yeah, it's part of automatic organization:
https://photostructure.com/getting-started/automatic-library...
Re:Ask HN: Alternatives to Google Photos?
by Tempest1981 on Monday May 31, 2021 @01:35AM
(#27340525)
How do you compute the duplicates? Does it detect rotated dupes, and resolution differences?
I tried a few things with ImageMagick, but ran into problems. I'll have to try your app!
Details are here: https://photostructure.com/faq/what-do-you-mean-by-dedupe/
It's also why I implemented bitrot detection and metadata inference. A beta tester just called the date parsing heuristics "freaking awesome and so close to black magic…" :)
https://forum.photostructure.com/t/combining-images/524/7
(And if you prefer the command line, know you can do tons of things via the CLI: https://photostructure.com/server/tools/ )