Q: "Please can someone help me with this, I have searched and can't find anything on this. Does anyone know any software that enables me to edit .m4v files on Mac OS? I need to revoved adverts from files and make some easy editions such as trimming, splitting, joining and adding some Transition between the videos to make the video more beatuifu. I know iMovie can edit videos, but it seems that it doesn't support the .m4v format"
Well, what we need is M4V Editor Mac, which helps to customize remarkable M4V video for you. Video Editor for Mac is a powerful video editing tool that helps you to edit home videos by trimming, rotating, cropping, merging, etc. as well as personalize your videos with rich captions, filters and transitional effects for sharing anywhere. Just free download it and follow the detailed tutorial on how to edit M4V with this M4V video editor below. If you are a Mac user, you can use Mac Video Editor to edit M4V in Mac.
Reference: The M4V file extension corresponds to the iTunes video file type. Structured just like an MPEG-4, most M4Vs contain content downloaded from Apple's iTunes Store, including television shows, music videos and movies.
1.Download M4V editor
Video Editor software has both Windows and Mac version. Please download the right version based on your computer system.
2.Load videos to the program
Launch the Mac M4V Converter, drag and drop your source DVD movies or videos to the program.
Click "Join", "Cut" or "Split" function areas to merge multiple M4V clips together, or cut M4V files with extreme precision and split large M4V to many segments.
4. Get the edit files
After editing files, you can choose different output formats from the "Profile drop down list" and then click OK to get the edit M4V file.
M4V Editor - How to Edit M4V Files with M4V Video Editor