​ Add your file. Click Add Media, then choose the Add Video option. Select the videos you want to attach subtitles to.
​Select the subtitles. Click No subtitles in the output information section. In the pop-up window, click the Add button and select the subtitles you want to insert into your video.
​ If you want to find subtitles online, after clicking Add, choose Search online. In a new dialog box, just click Search. You will get a list of subtitles that match the metadata of your file. Select the subtitles that suit you best.
Edit subtitles (optional). Click Edit to make changes in subtitles. Select the desired font and specify the size, the appearance and the alignment of text.
Choose the preset for conversion. Open the Video tab and select the format. If you are satisfied with the resolution of your video, choose the MP4 H.264 - Original Size option. If not, you can choose any other resolution from the list that you feel would work better.
Add SRT to the video. Hit Convert to add SRT to the MP4 files. The folder with the output files will open as soon as the processing is done. By default, the subtitled videos will be saved in the Movavi Library folder. You can select the target folder for your videos by clicking the Save to button at the bottom of the program window.