[Solved] macOS Catalina/Big Sur Won't Play Videos like QuickTime MOV?

Videos not Playing on macOS Catalina/Big Sur? Try 64bit macOS Catalina Media Player Try macOS Catalina media player 5KPlayer to play QuickTime videos music on Mac.Easier & Fast Solution

Why macOS Catalina/Big Sur Won't Play Videos?

• Apple's transition 32-bit to 64-bit technology causes videos not playing on macOS Catalina/Big Sur The 64-bit technology benefits processors and apps, and also enables more efficient performances. So to make sure that you have the best experience on the advanced Mac computers, all the future Mac software will be required to be 64-bit though some videos won't play on macOS Catalina/Big Sur is a big headache. But don't worry, we have find an ideal macOS Catalina media player that can tackle this kind of problem well.
• 32-bit QuickTime Player 7 won't work on macOS Catalina/Big Sur After upgrading to macOS Catalina/Big Sur, you can't use QuickTime Player 7 that is based on 32-bit tech. If you have used QuickTime 7 to output some media files, disappointments are that these QuickTime formats or videos won't play on macOS Catalina/Big Sur including te QuickTime MOV file. Accordingly, one solution is to convert these files to macOS Catalina/Big Sur compatible formats with QuickTime or via other applications. However, the converting function won't work after Mac OS update, so you should convert videos before upgrading to Catalina/Big Sur.
• iMovie/Final Cut Pro on macOS Catalina/Big Sur won't play videos generated by QuickTime 7 If you have a lot of QuickTime Player 7 generated media files on computer you may be not that lucky to play them on macOS Catalina. Apple has claimed clearly that iMovie and Final Cut Pro wont' work with the 32-bit media files from QT 7 when the Mac OS is shifted to macOS Catalina/Big Sur. Besides, videos not playing on macOS Catalina/Big Sur error will also happen to Motion and Adobe products like Premiere Pro CC (version 12.1), After Effects CC (version 15.1), Adobe Media Encoder (version 12.1) and Adobe Audition (version 11.1.0).

How to Play Videos Music on macOS Catalina/Big Sur Successfully? Use macOS Catalina/Big Sur Media Player

It is the truth that there is no effective way to test if a video or audio is encoded with 32-bit technology. That is to say, you totally can't know which media is supported by macOS Catalina/Big Sur, or you nearly have no time to test all videos one by one if there are a bunch of videos on your computer.

Now that the videos not playing on macOS Catalina/Big Sur problem is caused by the transition from 32-bit to 64-bit technology, you are probably suggested to convert the incompatible media files to the supported formats before macOS upgrading. This is a good way indeed, however, the ironic thing is that you won't know the videos not playing on macOS Catalina/Big Sur error until you update your system. Under such circumstance, converting videos with QuickTime is impossible. So, converting media files for macOS Catalina/Big Sur is not advisable.

The best way is to find a powerful macOS Catalina media player that can play any media files on macOS Catalina/Big Sur no matter they are encoded with 32-bit tech or 64-bit tech. 5KPlayer is the ideal one. Besides the AV1/VP9, DivX, Flash Video, MOV etc that will affected by the 32-bit to 64-bit transition plan, or the macOS Catalina/Big Sur compatible H.264, HEVC, MP4, AVI, 3GP ,etc media, 5KPlayer digests them all. Born to a 4K UHD video player for Mac, 5KPlayer will give you an amazing multimedia experience like never before.

Final Words:

Videos not playing on macOS Catalina/Big Sur problem is easy to solve as long as you find the right solution, and 5KPlayer is one of the right ones. To give you the greatest media playback experience on the brand new macOS Catalina/Big Sur Mac, the 64-bit 6K media player 5KPlayer will help play HD, 4K, 5K, 6K and even 8K videos on Mac and Windows 10 easily and fast. No adware, no virus and 100% free.