4K & 1080p footage in the same project?

[Philip Nidler]

Hi guys!

I have some questions regarding using 4K and 1080p footage in the same project.
I really hope I can get some answers here, would really appreciate it! ☺

PS – I have a Sony A6400 which has 4K but only with 25fps which doesnt allow me to slow down the footage.

1. Is it possible to use 4K and 1080p footage in the same project when for example the video is 1080 x 1350 Instagram format?

2. If so, how do I crop the 4K footage?

3. Wouldn’t you detect a big difference if you use both? I mean, since 1080×1350 is very small can you even spot a difference on a phone?

4. Should you always export the project ProRes or is H.246 still fine?
For people who does not use iphone or Mac can their phones still play ProRes files?

Thank you very much!

/Philip