No codec packs are needed and it's completely free.

You can also use it to play DVDs, CDs, VCDs, and various streaming protocols. VLC PlayerĪ simple and open source cross-platform best media player for Mac to playback various type of video file. Here you can try find QuickTime player alternative to play MP4 files with ease. It is risky to download a codec pack that may bring adware/malware/virus to your computer. You can go to Softonic or CENT to get QuickTime MP4 codec pack to strengthen your QuickTime player. QT 7 Pro is powerful enough to deal with that, but at a certain cost - $29.99. QuickTime 7 and above can handle MP4 files well. Actually, we've worked out 4 solutions to fix the problem. More than one guys have the similar issue when playing MP4 in QuickTime on macOS High Sierra. I get the bar and it stops halfway through loading and just sits there.' 'I am using a Macbook Pro 13' (early 2015) and I recently updated my macOS to High Sierra over a week ago, and then I had problems with my MP4 videos using Quicktime. QuickTime MP4 Playback Problems in High Sierra

Quickly can open mp4 on mac