Problems while playing video files is common. But the situation turns annoying when you don’t know how to fix the issue and get back to playing the video. On one such occasion, you had upgraded to the latest macOS High Sierra version. After that, there have been issues with MP4 video. The MP4 file has playback problems on QuickTime.

Vlc Player For Mac High Sierra
How To Download Vlc Player On Mac
Free Vlc Player Mac

Mac Vlc free download - VLC Media Player (32-bit), VLC Media Player (64-bit), VLC Media Player Portable, and many more programs.

Macbook pro, iMac, macbook air, macbook, macbook retina display, macbook retina display 2, mac pro, iMac retina 5k display, mac mini,apple laptop.
VLC Media Player is often seen on Windows Operating System. This version named VLC for Mac can run on Mac OS X and is endowed with the same functions as on Windows. It one of the best free, open source video players available for Mac devices. Key Features As already mentionned above, this VLC is especially conceived for Macs.

Well, you don't have to worry as there is a solution to every problem. Listed here are a few solutions to playback problems with QuickTime MP4 file on macOS High Sierra. If you have corrupt or damaged videos shot on iPhone, you can know how to repair corrupt iPhone video here.

Install QuickTime 7 Pro:

Try installing QuickTime 7 Pro. This is because QuickTime 7 and above can handle MP4 files better. And, QuickTime 7 Pro is the best one to deal with .mp4 files. So, get QuickTime 7 Pro or any higher version on your MacOS High Sierra and play MP4 files.

Install QuickTime MP4 codec:

Install QuickTime MP4 codec pack. Sometimes when the required codec is not present in QuickTime, there are chances of the MP4 file not playing. So you need to download the required codecs to play the MP4 video on your macOS High Sierra.

Play on A Different Media Player:

The next solution is to try to play the MP4 video on an alternate media player. You can try playing the video on VLC player or MPlayerX when you experience QuickTime MP4 playback problems on macOS High Sierra.

Convert MP4 to QuickTime Supported Format:

If none of the above methods have worked out then the next thing to do is to convert MP4 file to QuickTime supported format. QuickTime plays most of the MP4 videos with MPEG2, MPEG-4, H.264, and so on. However, you would still come across error messages or experience choppy playback issues while trying to play the MP4 file on QuickTime player; especially, if the MP4 file is having unsupported audio or video codec. So, in this case, the ultimate solution is to convert the unplayable MP4 file to QuickTime supported format.

Make sure you use reliable tools for converting MP4 file to QuickTime supported format. Otherwise, the file can get corrupted.

Above solutions should solve your QuickTime MP4 playback problems on macOS Sierra. Unfortunately, if you cannot fix the issue with the above solution or the converted MP4 video fails to play then you can try this last and effective solution.

RepairYour QuickTime MP4 Videos on MacOS High Sierra

In case, the MP4 video file is corrupted or damaged then none of the media players can play it successfully, including QuickTime. In such cases, you can make use of reliable video repair tools to fix corrupt QuickTime file and play it without any issue or playback error.

I suggest Remo Video Repair tool to repair your corrupt MP4 videos. Don’t be confused by the name MOV repair, the software can also support MP4 video repair. Not just, corrupt MP4 files, it even fixes not opening, inaccessible, damaged MP4 and MOV video files in a short while. So, repair your QuickTime MP4 video which is showing playback issues on macOS High Sierra with this recommended software using below procedure.

Steps to Repair QuickTime MP4 Video on MacOS High Sierra:

Step 1: Launch Remo Repair MOV, select your corrupt MP4 file along with a healthy MP4 video (for reference) and click on the Repair button.

Step 2: Preview and verify your repaired QuickTime MP4 file.

Step 3: Save the fixed MP4 video on a new location.

Additional Information: If any of your movie files are corrupted or inaccessible, and you are looking for a tool to repair it, then follow the link to repair video file in just a few simple steps .

This page describes how to make VLC the default media player.

Other 'how to' pages

1Windows
3Linux
- 3.1Fedora
  - 3.1.1GNOME

Windows

See also: How to associate media files with VLC.

XP

The simplest way to set VLC as the default media player for Windows is during installation of VLC. During set-up, VLC will ask you if you want to associate certain media file types (such as .mp3, .flv, .wav) with VLC; for each 'association' chosen opening that file type will launch it in VLC. By default, all are selected, though you might (or might not) want to un-check file types you'd like to open with another programme.

If you've missed this chance at making it the default media player during set-up, perhaps the easiest way is to un-install it and then install it again.
A word of caution regarding re-installation—be sure to un-check the box that deletes your preferences and cache, or all your customisations will be gone!

Vista, 7, 8

Open VLC player, click on Tools in the menu, and from there select Preferences.

Click on the Interface button on the left panel and then click on Set up associations... (it's close to the bottom).

Select types of files from the list that appears. Check any file types for which you want VLC to be the default player, or just check the select all option.

Mac

Right-click on the type of file you want to always open with VLC. Click 'Get Info'. In the 'Open With' section, select VLC from the drop-down menu. To apply this change to all files of this type, click the 'Change All' button.

For optical media, like CDs or DVDs, go to Apple -> System Preferences and choose 'CDs/DVDs' in the Hardware section. Choose 'Other Application' from the respective popup menu button. The list is alphabetical, so VLC should be near the bottom of the list.

Linux

Fedora

GNOME

Gnome uses two lists (located at /usr/share/applications/) – mimeinfo.cache and defaults.list – to register applications to file types.
You can either edit these manually or use the tools that GNOME has for this.

Instructions on how to do it in GNOME

Changing the default application for videos using menus (the easy way):

Using Nautilus 2.30.1, from the top menu bar choose 'Places', then Home Folder -> Edit menu -> Preferences -> choose Media tab -> and in the drop-down list next to 'DVD Video' choose 'Open VLC media player'.
Voilà.

Alternatively, try: System -> Preferences -> Personal -> Preferred Applications -> Multimedia -> Custom -> Type this: vlc %U

(P.S.: this alternative hasn't been tested yet).

Changing the default application for videos using menus (the not-so-easy way):

Right-click on the video file that you want VLC to open by default.
Choose properties.
Now in the properties window, click on the tab named Open With.

In the tab Open With just choose VLC as your player for that type of file.

Just remember that you will have to do this for each and every type of video/audio file (e.g., mpg, avi, rm, mkv, ogg, mp3, etc.)

If the VLC icon doesn't show up on the Open With tab, click

Vlc Player For Mac High Sierra