how much AVI video can 32gb hold at 12mp

[Stilleatting]

My new camera records AVI video at a 1080i resolution with a 12megapixel camera. how long would I expect a 32GB micro SD card last before having to switch it out?

 

[Boogieman_WD]

Hey Stilleatting. This depends a lot on the video compression. Those 12MP are most likely the max photo size and not the video quality, which is probably Full HD (as you said) at 30FPS. You could take a look at this thread here for a bit more info on the subject: http://www.tomshardware.co.uk/forum/272714-32-minutes-32gb-1080

Hope that helps.
Boogieman_WD