How much storage for higher bitrates?

[jakub.friso]

Hello guys, if anybody here has experience with Magic Lantern on Canon and recording 1920x1080/25fps in higher bitrates could tell me how much minutes of footage can fit into 32g SD card for every different bitrates (for example CBR 3.0x or CBR 1.6x)?

I am preparing on shooting of aftermovie from concert and I want to know how much SD cards should I borrow and this information would help me so much

Thank you