How can any device that supports JPG support this Ultra HDR format if it is not exactly to JPG specifications? They mention they embed more data into the file than just a typical JPG so how can software that previous supported JPG know what to do with it?
It sounds like it's backwards compatible so places that don't support the new format will simply get an SDR version of the photo and I'm sure Google will try to get everyone to support this new type of jpg.
Below, I’ve embedded some graphics created by display analyst Dylan Raga that illustrate how Ultra HDR works. Using version 9.1.098 of the Google Camera app extracted from a Pixel 8, I took various Ultra HDR photos in a nearby park. These photos were captured on a Pixel 6 Pro, which surprisingly supports saving photos in Ultra HDR just by sideloading the latest version of Google Camera.
I like the sound of the backwards compatible features but they shouldn't limit this to only the pro models. That's unnecessary given the previous chips were identical unlike this new batch