Download and install DVD Joiner, then launch this tool.
Step 1. Click "Add File(s) " button to input the DVD movies. Then all the titles and chapters are listed in the main window, select a file and preview it in the left window, find the clips you want to merge and check them in the file list.
Step 2. Check button, which helps you join all the checked videos in the file list, and output a single video for your successive playback.
Step 3. Adjust all output settings, like Audio Track, Subtitle, output format and destination folder.
Tip 1. If you are not satisfied with the ready templates, click "Settings" button to customize all encoding setting.
Tip 2. Select a video and use "Effect, Clip, Crop" buttons to edit video as you like.
Step 4: Click merge button to start join them into one.