Then find the subtitle files on your hard drive and add it to your video. To add subtitles, click the Plus icon next to the Subtitle bar on the video. Then launch it and click the Add File menu to import all MP4 files that you want to edit.Īfter importing, check the videos in the library panel and you can preview it with the built-in media player on the right side. When you have some MP4 videos do not have the right subtitles, download and install Video Converter Ultimate on your computer. Step 1Import MP4 into the best subtitle editor Free Download Free Download Learn more How to Add Subtitles to MP4 Videos