Retrieve iOS videocamera resolution

Question

我需要检索由iPhone的iOS相机拍摄的电影的像素分辨率...是否有像UIDevice这样的库检查我正在使用哪种类型的设备，还有相机信息？

Answer 1

Everything depends in which mode you'll start capturing video.

According to this link: https://developer.apple.com/library/mac/documentation/AudioVideo/Conceptual/AVFoundationPG/Articles/04_MediaCapture.html#//apple_ref/doc/uid/TP40010188-CH5-SW30

You can try to capture video with AVCaptureSessionPresetHigh preset, and than check what's the size of captured image.

This should give you highest video resolution in recording mode.