Apple apps such as QuickTime Player, Photos, and Keynote work with many kinds of audio and video formats. Some apps prefer specific formats, but QuickTime movie files (.mov), most MPEG files (.mp4, .m4v, .m4a, .mp3, .mpg), some AVI and WAV files, and many other formats usually work in most apps without additional software.
Older or specialized media formats might not work in your app, because the format requires software designed to support it. If that happens, your app won't open the file or won't play back its audio or video.
How to search for an app that works with your file
You might already have an app that supports the format of your file. If you don't know which of your installed apps to try, your Mac might be able to suggest one:
It is actually the free version of an expensive DICOM viewer called Osirix MD, which is often considered to be the best DICOM viewer for Mac. It only runs on Mac OS, version 10.8 or higher. This software allows for most diagnostic techniques, including multiplanar reconstruction, maximum intensity projections, and volume rendering. More than a video player. Use a video player that does more than just ‘play’. Watch your video library in high-quality up to 4K, enjoy a variety of video formats such as AVI, DIVX, MKV and MP4, and take advantage of features like smooth FF/RW and chapter points. For instructions, see Install an older version of Adobe Reader on Mac OS. Double-click the.dmg file. (If you don't see the Safari Downloads window, click Finder (User Name) Downloads.) Double-click Install Adobe Acrobat Reader DC to start the installation. When asked if you are sure that you want to open the file, click Open.
- Control-click (or right-click) the file in the Finder.
- From the shortcut menu that opens, choose Open With. You should see a submenu listing all of the other installed apps that your Mac thinks might be able to open the file.
Avi File Reader Mac
If none of your installed apps can open the file, search the Internet or Mac App Store for apps that can play or convert the file:
- Include the name of the media format in your search. To find the format, select the file and press Command-I to open an Info window. The format might appear after the label Kind, such as ”Kind: Matroska Video File.”
- Include the filename extension in your search. The extension is the letters shown at the end of the file's name, such as .avi,.wmv, or .mkv.
Learn more
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- QuickTime Player (version 10.0 and later) in OS X Mavericks through macOS Mojave converts legacy media files that use certain older or third-party compression formats.
- Learn about incompatible media in Final Cut Pro and iMovie.