@hypoliteThis is via the JS Uploader by pasting into the new post form/editor. A file size messageflashed up. Too short for a screenshot. Perhaps it was shown a bit longer recently. Perhaps I got the big file sizes from there. Is this the max file size message you mentioned? In any case, I glad, the stored files are not bigger than the originals.

@Dorine That's a screenshot from a webcam. Alas this one from Kaluga in Russia is no longer online. I even fear, the guy is drafted or dead.