[xgbi]

We (linphone) do H264 software encoding and reach 720 on high-end iPhones (5s and more). So 1080 should be doable in realtime with, say, 20 fps, on an i5 I'd say?

[ex3ndr]

Are you using hardware accelerated encoding on iOS?

[xgbi]

As I said, software encoding. Hardware encoding is coming but not yet there.