In this case, all you need to do is to find a reliable converter with powerful features and providing lossless quality. If all the upper solutions fail to play mp4 on Mac, there is still a useful and straightforward method to handle the issue on “QuickTime player don’t open MP4 on Mac”, which is to convert the problematic MP4 file to a QuickTime supported format such as MOV. Convert MP4 to a QuickTime supported format Please click a replacement one to see if it deals well with the issue. Immediately, you will see many different codec options here. What you need to do is to open the player and click on the Windows > Show Movie inspector. If your QuickTime don’t play MP4 files with this reason, it’s advisable for you to change the codes that could compatible to QuickTime. If you have checked all the problems mentioned in the upper and ensured that there is no problem between QuickTime and MP4 files, the issue may mainly caused by lacking some crucial codec of the MP4 so that the file is not compatible to QuickTime Player. If you are running an outdated version, you can upgrade it easily by going to the App Store application on your Mac and clicking on the Updates button.Then it will show you all the apps required to update, you can simply click on QuickTime and select “update”. You can head to the menu QuickTime Player > About QuickTime Player at the top bar to check the current version of QuickTime Player. You are supposed to update QuickTime player with the newest version. If the above ways don’t make effects, it may also caused by the outdated version of QuickTime. If they helps, you don’t need to find any troublesome means. Or you could also try to close and restart your computer. If you come across the problem of QuickTime can’t open MP4 on Mac, it’s recommended to close your QuickTime player and reopen the program at first to test if it works. Solutions to fix MP4 Not playing on QuickTime Solution 1. Here are some proper solutions for you to fix this issue. However, solutions are always more than difficulties. Or the MP4 will be damaged if your computer or other operating system is attacked by malicious software. For instance, it may caused by inappropriate installation of QuickTime or losing some important part of QuickTime when you download it, making QuickTine player hard to operate normally. In addition to these factors, there are other reasons why QuickTime can’t play MP4 files. You can also try to use a third-party application to repair the damaged file as there are plenty of excellent repair tools on the market around the world. All these lead a sad situation that it can’t be played on QuickTime as a damaged one.įrom this point, you can find a splendid converter to convert the file into other QuickTime player supported formats. Or the MP4 file is completely corrupted when you copy it from unauthorized external sites. Or the file is damaged by a sudden terminated instruction of the application when it’s operating. The video file may be damaged by missing a codec when you download it. The MP4 file may be corrupted or damaged unintentionally for various reasons. Corrupted filesĮxcept from the upper reasons, the problem that QuickTime player can’t play MP4 filres on Mac probably lies in the MP4 file itself. But don’t worry, I will show you two advanced converters for handling this issue later. Hence, if your QuickTime player can’t play MP4, it is likely to caused by compressing the file with incompatible codec.īesides, because of the incompatibility, it will be a hard thing if you want to share your video to others in good condition via QuickTime. However, MP4 is a container for miscellaneous video, audio, and metadata. ![]() ![]() Although QuickTime offers a strong support for many formats, it is only compatible to MPEG (.mp4. If your QuickTime player can't open MP4 after you upgraded your QuickTime Player, the codec compatibility is one of key factors deserving to be considered. ![]() But you should know in advance that it is required to purchase for upgrading QuickTime. It’s probably that QuickTime player fails to read and compress the MP4 file data because some newly function can’t be operated under a outdated version. If you can’t open MP4 files on your QuickTime, you should take the version of the application into consideration at first. Why QuickTime player can't open mp4 sometimes The outdated version of QuickTime QuickTime alternatives to play MP4 easily. ![]()
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