Click on the Video option in the text menu and select Load Video File‛. Now you will have two folders with your clips which can be merged by simply drag and drop. Merge multiple videos into one video file using command-line from an .MV in Windows 10 How to Merge Video File in Windows 10? Step 1 : Go to the folder with your downloaded video files. I'm sure the most reliable and best way would be to use Video Upload Manager from Video Editor by Windows 10. The best software solution for video upload on Windows. Just enter only one video file here (i.e. not multiple files.) I've uploaded my video to: (i) YouTube → (ii) Microsoft Online Video → (iii) Microsoft Online Video via Windows 10 → (iv) YouTube → (v) Google Play → (vi) Google Play via Windows 10… Now click on the “Add to Device Folder” button. Step 2 : Click on “Browse” Step 3 : Choose a folder, or multiple folders. Step 4 : Browse and select your video file. Step 5 : The Video Editor has the option to save as a .VOB, .avi, .mp4, or.movies file. Step 6 : Click on “Open Video File” and the video will be imported into device folder. Now you can watch your Video files. Merge multiple videos in one video file using command-line in Windows 10 Video files will be merged into one video file using CDDL in Windows Merge multiple videos into one video file using C# from Command line in Windows. Step 1 : Right-click on video, choose “Add to Device Folder or “Create”. Step 2 : Navigate to your video, right-click it and choose “Get/Add to Device Folder” Step 3 : Choose folder (or multiple folders) and select video. Step 4 : Click on “Add Media” Step 5 : If you want to merge video files, first add videos into device folder, then add media into device folder. Merge multiple videos into one video file in Windows 10 using .avi or .mov file with Merge Media Converter on Windows 10 How to Merge MP4 Files in Windows 10 with Windows Media Player on Windows PC? To merge MP4 file in Windows use the following command(s): Video Editor: 1.