I am working on a film made of stills, and had until now no problem with the following settings: I imported 3000x2250 Jpgs in a sequence Apple Prores (HQ) 1920x1080 25p 48 khz.
I could edit and preview my edit without any rendering (green bar on top of sequence).
Out of the blue, I can no longer do that: when I try to change my edit, or create a new sequence with the same settings and import jpgs in it, it won't allow me to preview while editing (red bar on top of sequence).
Only if I use a different setting (for example Apple Prores (HQ) 1440x1080) will it allow me to preview while editing.
This is a big issue for me, as it is cumbersome to render for each new cut made or modified, and I have no idea why something that worked fine for a while suddenly does not work anymore.
Any idea why this happened and how to be able to resume editing in my original settings while being able to preview?