Written by Apple has finally pushed out the MacOS Sierra update we’ve been waiting for since WWDC back in June and, with it, some useful new features. They can speed up how you work and find things, as well as helping you save space on your precious hard drive. You can import some videos like MP4 video to the macOS Sierra for playing with media player like QuickTime. However, you should know, macOS Sierra has a strict criteria for MP4 media playback. Check out “macOS Sierra MP4 playback” below if you need to play video on macOS Sierra for relaxing when you have a rest time. 
Why sometimes MP4 cannot be played on macOS Sierra?
Sometimes the MP4 videos can fail to start playing. This is the case where there are codecs that are not supported. Because of this, there are many Mac users who opt to upgrade the OS. However, many of the codecs still remain not compatible. So in this case, you will need one MP4 video encoder for macOS Sierra.
With the above-mentioned macOS Sierra video converter can help you solve all your Pavtube Video Converter for Mac. Using it, you can easily convert your MP4 video in SD/HD/4K resolution to any formats like H.264 MP4, MOV etc for playing smoothly on macOS Sierra. The Mac stuff, additionally to the conversion function, offers some useful but easy-to-practice edit function: crop, split, rotate, and add effects to the original MP4 video files.
Key features of the Pavtube Video Converter for Mac
- Supports almost all video/audio formats including MP4, MKV, MOV, H.265, AVI, MXF, XAVC etc.
- Convert SD/HD/4K MP4 videos to any formats like MOV, H.264 MP4 you need for macOS Sierra.
- Allows you to add special effect/watermark to video or trim/flip videos.
- Make 2D MP4 to 3D MP4 video conversion on macOS Sierra.
- You can customize the video audio parameters at will to get your desired video effects.
- It has a perfect compatibility with macOS Sierra, Mac OS X 10.11 El Capitan, 10.10 Yosemite, 10.9 Mavericks, 10.8, 10.7, 10.6, 10.5.
Free download the best MP4 video converter for macOS Sierra:
Step 1. Load MP4 Video Files
There are two ways in which you can achieve this. You can drag files and drop them into the interface directly, or alternatively you can click on “Files”, and then select “Load Files”. 
Step 2. Choose Output Format
Before you start the conversion, you need to select the output format that you want by going to the format category. This is found at the bottom of the program. The setting bar can allow you to view the format parameters that will be used with the chosen format. The format recommended here is MOV.
Step 3: Click the "convert" button on the main interface and the software will start to convert to friendly video formats immediately. When the conversion finishes, click ‘open" to find the converted video files.
