Swift: video records at one size but renders at wrong size

Question

The goal is to capture full screen video on a device with Swift. In the code below, video capture appears to happen at full screen (while recording the camera preview uses t

Answer 1

Try SDAVAssetExportSession

You can specify the AVVideoWidthKey and AVVideoHeightKey You can also specify the profile, AVVideoProfileLevelKey ie AVVideoProfileLevelH264HighAutoLevel for supporting something 4k, a friend (Michael Lowin) tracked that property down to help us improve some export qualities.