

The file can be damaged or corrupted and that is why you can’t open it on Mac. MP4, also known as MPEG4 is mainly a video format that is used to store video and audio data. Filmstock Video effects, music, and more. OPEN wondershare Video Creativity Video Creativity Products Filmora Intuitive video editing. AniSmall for iOS Convert and compress videos/audios. DRmare M4V Converter is the best M4V to MP4 converter, specializing in removing encryption from purchased and rented M4V movies and converting M4V to MP4. Last but not least reason why QuickTime can’t open MP4 on Mac is the file state. Wondershare UniConverter (originally Video Converter Ultimate) enables you to batch convert, compress, edit videos, burn DVDs, and much more. So check whether you are using the updated version as some functions can’t be operated under an outdated version, that is why cursing issues with playing MP4 on Mac.

If that happens, your app won't open the file or won't play back its audio or video"Īmong the other possible reasons is also the outdated version of QuickTime. "Older or specialized media formats might not work in your app, because the format requires software designed to support it. So if you face the issue that your QuickTime is unable to playback MP4, most likely the file was encoded using a different standard.

In general, QuickTime is able to handle MP4 files that are encoded with MPEG-2, MPEG-4, and H.264. The main reason why QuickTime can’t always play MP4 videos on Mac lies in the format encoding difference. You can easily convert YouTube videos to MP3, 3GP, MP4, WMA, M4A, FLV, WEBM and MO formats, etc. We support all video and audio formats conversion. Why Can't QuickTime Player Open MP4 file on Mac? Easy to convert YouTube videos to MP3 files regardless of whether you are using Windows, Mac or Linux, Android, iPhone.
