Which Prores flavor for a 12 hour shoot on 4.6k?

[August McCue]

DPing a cyc wall music video this weekend and will not have excess time to play with the 4.6k before then. We have two 256gb cards and will be able to dump footage while shooting on the other. That being said I'm trying to figure out the proper codec for the day without having to stop while we dump. We're planning on a 12 hour shoot with lunch. I'm pretty sure that throws RAW out the window but I haven't been able to find much info breaking down the differences in prores flavors. Can anyone break down the different record times for each prores flavor on a card that size?

Thanks!

[jhnkng]

The Tech Specs page for the Ursa Mini has storage rates listed for all the flavours of ProRes:
https://www.blackmagicdesign.com/products/blackmagicursaminipro/techspecs#W-URSA-20

I shot a short doc on the Micro on ProRes LT and that graded just fine. 

[sondreg]

You can use this formula: 256GB/((MB/s * 60)/1000)

Prores 444 XQ = 17 min on single 256GB Card

Prores 444 = 26 min

Prores 422 HQ = 39 min

Prores 422 = 58min

Prores 422 LT = 84 min

[Santiago de la Rosa]

Personally, I dont think that using a 4.6K Ursa with Prores LT is a good idea. Buy 2x more Cfast and be ready to back up it at set.

LT is just okay, test it yourself, if I would have an Ursa 4.6K I will rec at Prores HQ as minimun. 

[EthanAlexander]

This is a handy reference for ProRes questions: https://images.apple.com/final-cut-pro/docs/Apple_ProRes_White_Paper.pdf