Home>> Video Converter for Mac >> macOS Sierra Video Converter

How to Solve macOS Sierra Can't Play MKV, AVI, WMV, FLV, ASF, etc?

macOS Sierra Converter: Convert, Play, Edit Video, Audio on macOS Sierra


With the newest update of macOS, macOS Sierra comes to users' eyes. But like the update of other older versions, users have been or is going to encounter some issues with the macOS Sierra operating system, like iTunes with macOS Sierra not responding issue, macOS Sierra installation frozen issue, macOS Sierra can not run normally after update issue, macOS Sierra runs slow issue, etc among which the top one issue, the same as macOS other versions, is the video playback issue. Many users will report the preinstalled video player in macOS Sierra, QuickTime, can not play MKV, AVI, WMV, FLV, MPEG-1, MPEG-2, RMVB, WTV, SWF, 3GP, ASF, etc, but we all know that the above said video formats take a big part in video files.

How to Solve Can't Play MKV, AVI, WMV, 3GP, ASF, etc on macOS Sierra?

Many users may recommend VLC media player. Yes, VLC media player can play lots of video formats, like MP4, AVI, MKV, AVI, WMV, etc, but not all of them, like AAF, DAT, MXF, etc. what's worse, when running the free VLC media player some problems will appear. For example the video is too dark, choppy; the video and audio can not sync; some subtitles can not be played; some DVD or other video file can not be played; VLC crashes. So to avoid VLC problems the recommended solution is to convert the video format to the macOS Sierra QuickTime supported video format, such as MOV.

macOS Sierra Converter

iDealshare VideoGo, the ideal macOS Sierra Converter, is just designed to convert any video or audio format macOS Sierra, Mac OS X or Windows. It also can directly play and edit any media files on Mac or Windows

  • Convert MKV, AVI, WMV, 3GP, ASF, WTV, MPEG-1, MPEG-2, RMVB, OGV, FLV, SWF, AVCHD, MXF, TS, VOB, MVI, DVR, DAV, H.265, WebM etc to macOS Sierra supported QuickTime MOV, MP4, Apple ProRes.
  • Convert WMA, OGG, FLAC, APE, DTS, WAV, RA, AU, MP2, MPC, CAF, VOC, QCP, DSS etc to macOS Sierra supported MP3, AAC, AIFF, Apple Lossless ALAC, M4A, WAV etc
  • Directly play any video or audio format without conversion on macOS Sierra QuickTime or iTunes
  • Edit media files like trim, crop, rotate, watermark, subtitles, compress, split, merge, increase audio volume, etc

How to Convert Video on macOS Sierra

The following will take converting MKV to macOS Sierra supported MP4 as an example, it also applies to convert other videos or audio format to macOS Sierra supported video or audio format on macOS Sierra, any other Mac OS X version or Windows version.

Make Preparation: Free download macOS Sierra Video Converter

Free download the ideal Mac SWF Converter version - iDealshare VideoGo (for Mac, for Windows), install and launch it, the following interface will pop up.

macOS Sierra Video Converter - iDealshare VideoGo for Mac

Step 1 Import video

Click "Add file" button to add MKV video(s) to iDealshare VideoGo.

How to Convert Video on macOS Sierra ?

Step 2 Select the exporting format

Click "Profile" button to set MP4 as the exporting format from "General Video" cagegory.

Click the "Browse" button to specify the folder where the output converted video will be saved on macOS Sierra.

Step 3 Convert MKV to macOS Sierra supported MP4

Click "Convert" button to start and finish converting MKV to MP4. After the conversion you can play the converted MKV on macOS Sierra successfully or Mac OS X.


With the IDealshare VideoGo, you can not only play MKV, AVI, WMV, 3GP, ASF, etc on macOS Sierra or Mac OS X, but also can play all of them on iPhone, iPad, iPod, iTunes without considering the codec issue.