Just unbelievable

[behzad]

Found this on you tube. Not sure what program he used.

https://www.youtube.com/watch?v=GeEISHh37lY

[bwood]

Pretty amazing. No idea what program, other than starting rom the inside out. Gary P may know.

[gwpriester]

Beats me.

[Egg Bramhill]

Here's one that continues for 10 hours:

Zoomquilt 2 - infinite zoom art - 10 hours 4K - YouTube

There's a apple app called endless canvas which can do this. I remeber seeing something similar many years ago created in Macromedia Flash.

Great effect.

[handrawn]

'infinite zoom' apps have been around for quite a while, yes

in the case of the example behzad posted, because there is a pause after each zoom, you could simply use a program capable of large resolution stop motion animation - and in fact, given a serious video editor as well you could do it without the stop motion, as in egg's example [although I do not know specifically how it was done]

[Acorn]

It could be done fairly easily in Xara with the anime.js library.
Remember a browser only has around /5 to x5 zoom.

What I might to is have an image that you can scale as above to explore any part at any such scale.
When bored, one could press a key I for In and O for Out. The browser zoom would slowly rest back to 100% will following a SVG path to the 'portal' and then a deep dive into that image using CSS scalie and a fade into the next image where you can again pan and zoom to explore.

If it is fully automatic, it is just a zoom carousel.
If you had a stack of 50 images and shuffled them then the different SVG paths would at least make the travel varied and less boring.

Acorn

[handrawn]

I dare say - mind you, if I were doing this, I would not be limiting it to browser viewing