Change the format used for capturing movie files.
Video captured on iPhone 8, iPhone 8 Plus, and iPhone X, and running iOS 11 or later, uses the HEVC format by default. When you use AVFoundation to capture videos, you can change the default format if you know in advance that you need a different format.
If your app shares the captured video using a system share sheet, the video is automatically converted to a format compatible with the destination device, and no more work is needed.
However, if your app saves or shares captured video internally, for applications outside the system share sheet, you must use a video-capture format compatible with all target devices. This article shows you how to change the capture format dynamically, so that videos captured in your app begin in the desired format.
Change the Default Format Used in Capture
Change the default format at capture time by specifying it in the output settings for capturing movie files. Each capture device has a dictionary of settings that you tweak to control properties of the output movie file. For example, to capture video in H.264/MPEG-4 AVC, set the output settings key
For a list of supported capture codecs, see
AVVideo and the Related Documentation section.
Convert Previously Captured Movie Files
In addition to saving or sharing captured video using a different default format, you can also convert existing movie file content. For more information, see Exporting Video to Alternative Formats.