Summary: You cant’ play MP4 file on Mac; QuickTime player can’t open MP4; no sound in MP4 videos on Mac, these and more such MP4 issues often bother Mac users. This post addresses the MP4 not playing on Mac error and shares the various viable options you can try to play MP4 videos on Mac without any issue.
‘I had a couple of recorded video clips on my iPhone, which I transferred to a buddy’s Mac to remove unneeded bits with his video editor. Afterward, I transferred the edited files to my Mac and attempted to play them with QuickTime. However, several MP4 files not playing on Mac and threw random errors like ‘cannot open MP4 on Mac.’ I don’t have a backup. Have my MP4 files corrupted? How can I play MP4 video files on Mac? ‘
‘MP4 files not playing on Mac’ is a common error due to which you cannot play MP4 video files in any media player. Often due to improper way of handling videos, file corruption, virus attack, or incomplete video transfer can damage MP4 videos. However, there’s always a good chance to repair corrupted MP4 files on Mac, as we’ll see in this post.
Most of the apps on Apple device can play MP4 video files. However, some apps won’t play MP4 on Mac due to incompatible codecs. Reason being MP4 is a container format that uses different video/ audio codecs such as MPEG-4 Part 10 (H.264/AVC), MPEG-4 Part 2, MPEG-H Part 2 (H.265/HEVC), and AAC audio codec. If your MP4 video file has a video/ audio codec that is not supported by the media player or program on Mac, it won’t play.
Besides, you can’t play damaged or corrupt MP4 files. Here are some of the frequent causes of MP4 file corruption:
While it may be very difficult and tedious to repair MP4 files that are not playing on Mac, you can use some manual and automated tricks to repair damaged videos, as shown in the next section.
Let’s get started with the solutions to fix the ‘MP4 file not playing on Mac’ error:
If MP4 not playing on Mac, close all the applications and restart your computer. If this doesn’t help, move to the next method.
If QuickTime player can’t open video files, update it. Normally, if the Internet connection is enabled on your Mac and QuickTime Player is open, the app prompts you to download the latest version, if available.
However, you can also find manually if the latest QuickTime updates are available or not. In QuickTime menu, select QuickTime Player > Update Existing Software. If any updates are available, follow the prompts to update. Now check if QuickTime player plays MP4 files.
You cannot play MP4 on Mac, if the codecs used in your video file are missing. Issues like QuickTime player has no sound on Mac when playing MP4 file or audio lag are usually due to incompatible codecs. So download MP4 codecs on Mac to fix the issue.
Try by changing your MP4 media player. You may use QuickTime alternatives such as VLC Media Player or 5K Player to open MP4 file on Mac. Make sure the new media player is compatible with MP4 H.264 or H.265 codecs in your video.
Various apps can assist you in converting the file format of a video on Mac, but unfortunately, many of them demand purchasing a license. You can try online video file converters that allow limited file conversions. Nonetheless, this is how you can do it for free using the VLC player.
Changing the file extension to AVI is another option for fixing a corrupted video file on Mac with VLC. This repairs the damaged, corrupted, or inaccessible MP4 files by converting them to a new one with specified settings.
Here’s how step-by-step you can repair corrupt MP4 for free with VLC Player:
The quick way to repair corrupted MP4 files is through Stellar Repair for Video. The software is extremely easy-to-use, and equipped with a rich feature set to help you battle video data corruption in various scenarios. It can fix MP4 files corrupted during video editing, recording, transferring, or conversion on Mac.
In addition, Stellar Repair for Video can fix file formats such as MOV, AVI, MKV, AVCHD, MJPEG, WEBM, ASF, WMV, FLV, DIVX, MPEG, MTS, M4V, 3G2, 3GP, and F4V from DSLR, iPhone, iPad, drones etc. It provides a complete video file repair solution for macOS Monterey, Big Sur, Catalina and older versions. You can repair multiple MP4 videos simultaneously, and download the repaired files at a desired location on your Mac. The free trial is for demo purpose only and provides preview of repaired files up to 20% of total video size.
This is how you can start the video repair process:
When trying to watch videos on Mac, you might encounter errors like ‘MP4 not playing on Mac’. While this could be due to multiple reasons, the good news is that damaged or corrupted videos can be repaired through some easy manual tricks or automated file repair solutions like Stellar Repair for Video. If the manual methods don’t help in your case, take the free trial of the video repair software by clicking on the download button below. It shows the preview of the repaired video.
Use any QuickTime alternative such as VLC Media player to open MP4 file on Mac. Alternatively, you can also convert MP4 file to MOV to play it in QuickTime. If this also doesn’t work, try to repair MP4 video by using Stellar Repair for Video.
A corrupt MP4 file will show video playback errors. It won’t open, show error message, have no sound, out-of-sync, play choppy, jerky, truncated or distorted. You should use a professional video repair software to make your damaged MP4 files playable again.
Besides QuickTime, you can use VLC Media Player to play MP4 video on Mac for free.
Nishat Paiker is an expert technical writer and editor with over 8 years of experience. She has deep knowledge about data recovery and loves to explore new technology and DIY tools. Nishat has keen interest in photography. You will often find her giving photography tips and hacks.
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