Consider the scenario of restoring a backup taken on an HEIF/HEVC capable device (e.g. the iPhone 7 or newer) to an older device (e.g. an iPhone 6s, running iOS 11).
Will images and videos taken on the new device and accessed on the old one be:
- Not restored at all?
- Restored, but not displayable (i.e. taking up space, accessible for sharing/uploading etc., but not shown in the gallery)?
- Be fully compatible, and displayed/decoded in software?
Is there a difference between images and videos? (I could imagine that images are decoded in software on older devices, for example.)