Calculating B-frame memory usage

[Comatose]

How would I go on about calculating the memory usage using the B-frame count and resolution? (assuming nothing else affects the memory usage)

Also, does the amount of reference frames have a noticeable effect on memory usage? I've never seen it mentioned anywhere :E

[Dark Shikari]

Its reference frames that affect memory usage, not B-frames.

[Comatose]

Then the same question, but for reference frames :P
Though I'm pretty sure I've read in a PS3 thread that it can only handle up to 9 B-frames at 720p, and 5 at 1080p because of memory usage. I probably just remember wrong >:3

[Dark Shikari]

Then the same question, but for reference frames :P
Though I'm pretty sure I've read in a PS3 thread that it can only handle up to 9 B-frames at 720p, and 5 at 1080p because of memory usage. I probably just remember wrong >:3Those are reference frame values, not B-frames.

[Comatose]

Yeah, like I said, I probably (now, for sure..) remember wrong.
So, I don't suppose you know how to calculate reference frame memory usage off the top of your head? >:O

[akupenguin]

How hard can it be? multiply the number of frames by the size of a frame.

[Comatose]

Right :\ Thanks!