Relationship VRAM custom timeline size

Dear all

I wanted to edit a large scale panorama in Davinci with some color correction tools and wanted to adjust the timeline settings so Davinci effectively becomes a picture editor - but with one frame.

I use the latest MacBook Pro with 8GB Vram (Radeon 5500) and seem to be able to edit almost 80 mpx files, ie sometthing like 10k * 8k, but then it crashes if I go higher. I suppose this has to do with the VRam.

Before going out to buy a dedicated PC workstation with a Nvidia 24gb or 48gb discrete GPU I wanted to understand if there are any limitations to the timeline size by the software or of the bottleneck is always VRam and in that case how to estimate the VRam required for a certain timeline.

I will only have 2-3 OFX plugins on a 1 frame picture and want to then export this is a tiff.

Many thanks for any help on this - even greater if some of the Black Magic programmers could shed a light on this and whether say editing a 20k*16k file could be done with a Nvidia 3090 or A6000 which has 48gb ram.

Thanks
Paul

[Peter Chamberlain]

V17 upped the software limit to 32k x 32k but I haven't seen a GPU test that supports that fully as yet.
I'll try to get a test on an A6000 and report.

FYI, there are a number of people using the 24GB GPUs for 8K res, (4xUHD) a common format in Japan.

Thanks Peter - awesome. Can one calculate this somehow linearly? Like for my 8gbm VRAM MacBook Pro - is there a reason it tops out where it tops out?

Would be awesome to know where it tops out with the 3090 and A6000! Pls. let me know. Is this also dependent o the plugins I put on there? I use Dehancer?