Valerii Zapodovnikov

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> * PNG: 32.3MB Recheck with ffmpeg -i file.bmp -compression_level 9 -pred mixed out.png And bmp can have good compression too.

Main advantage comes from mixed algorithm. And no, ffmpeg does not use libpng, just like Photoshop. In the past libpng was part of the tree but it was modifed many...

@psteinb I suppose you were talking about https://github.com/psteinb/compass right, not about https://github.com/psteinb/deeprace? Can you compare the implementations to understand where "tick faster" comes from?

> I know of no available tools that help in identifying the device's intrinsic frame and geoid model. Really?? Not even internally to google?

I updated EGM wikipedia article with some relevant info. Do you know how to download recently published 3859 https://epsg.org/transformation_3859/WGS-84-to-EGM2008-height-2.html? Wanted to compare with (all should be lossless) 32 bit float...

> * That has a zip to download that when unpacked has the EGM2008 data in You can just use web.archive.org. > anytthing from GeographicLib is correct, It is not....