Hah SVS is child's play compared to MRXS:

https://lists.andrew.cmu.edu/pipermail/openslide-users/2012-...

I'd hope imagemagick or some other program can at least get the data out into another format. I did not know about openslide before reading that mail, but I'll try to keep it in mind.

Here's hoping this eventually gets fixed in a similar sort of way the .mkv format "fixed" video.

I wasn’t going to namedrop in my original comment but oh my the horrors this format brings back.