On Mac, you might be able to identify the media format by selecting the file in the Finder, then pressing Command-I to open an Info window. If you know the name of the media format, include it in your search. After updating, if you don't have an app that supports the older or specialized media format used by the file, search the internet or App Store for an app that does.
Install all available software updates for your Mac and software updates for your iPhone or iPad. Older or specialized formats might not work as expected if your device, its operating system, or the app you're using doesn't support the format. Some apps prefer specific formats, but most formats work in most apps without additional software. Apple apps such as Photos, iMovie, Safari, Keynote, and QuickTime Player work with many media formats.
