With no quality loss, VOB to MOV Mac is such a wonderful conversion software developed for Mac users to convert Video to Video, Video to DVD, DVD to Video, Video/DVD to Audio. The all-in-one software will be your good helper.
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Guide
Powerful VOB to MOV OS X
How to convert vob to mov mac

See the picture above, let's start converting vob to mov mac with this Mac VOB to MOV software step by step.
You need to import vob video files you want to convert by clicking "Add Videos" button. You can find all added videos in Filename list and watch these videos on the preview screen.
Then Click "Edit" button to modify the video. You can trim and crop video clips, set video effects, preview your movies in real-time, and even add watermark onto your movies.
Click the down-arrow to select MOV as output profile. Choose output folder where the converted videos will be stored.
Start converting vob to mov mac by clicking "Convert" button. A window will pop up to show you the conversion progress:

With VOB to MOV for Mac, you can easily convert DVD and video (FLV, MOV, AVI, MTS, M2TS, MKV, MOD, WMV, ASF, MPEG, M4V, MP4, 3GP, etc) to MOV format.