The M4V file format is a video container format developed by Apple and is very similar to the MP4 format. The primary difference is that M4V files may optionally be protected by DRM copy protection. Apple uses M4V to encode video files in its iTunes Store. Unauthorized reproduction of M4V files may be prevented using Apple's FairPlay copy protection. A FairPlay-protected M4V file can only be played on a computer authorized (using iTunes) with the account that was used to purchase the video.  In QuickTime, M4V videos using FairPlay DRM are identified as "AVC0 Media".
- - Wikimedia
The .mov file format is often used to save movie files and video clips to a user's hard drive or other media device. It is the file extension that is used by the QuickTime media software that is distributed by Apple. Files that are saved in .mov format are compressed, making it easier to download and stream video from the Internet to your computer or portable media device. Many of the movies and videos that are available online are distributed in .mov format.
- - File
Step 1. Download and install the program, then double click it to run it, and then you'll see the main interface of the program.
Step 2. Click "Add File(s)" button. Here you can select "Add Video" or "Add Folder" button to add files as you like.
Step 3. Click the drop-down arrow right beside the "Profile" column and select your desired video format from the drop-down list.
Step 4. Click "Edit" button to customize the output video like Effect, Trim, Crop, 3D Settings and Watermark.