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How to Add Subtitles to MP4 Files on Mac/Windows (Windows 10 Included)

by Christine Smith • 2021-04-19 16:09:58 • Proven solutions

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Are you looking for a hassle-free way to add subtitles to your MP4 video? It won't be a big deal if you find the right software. This tutorial will show you how to add subtitles to MP4 videos before you know it.

Part 1. How to Add Downloaded Subtitles to Your MP4 Videos

To load your desired subtitles to any format movie you have, we highly recommend our Wondershare UniConverter (originally Wondershare Video Converter Ultimate) (Windows 10 supported). With this subtitle adder, you can add subtitles for videos like MP4 for either saving a video file to play virtually anywhere or burning MP4 to DVD for watching on TV. All will be done by the subtitling software. No installation of any other third-party tool is needed.

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  • Edit the video files with trimming, cropping, cutting, merging, adding subtitles, etc.
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What Are Video and Subtitle Formats Supported?

  • Video formats: MP4, AVI, MKV, WMV, MPG, MPEG, VOB, TOD, MOD, FLV, and all regular video formats.
  • Subtitle formats: SRT, ASS, SSA.

How to Add Subtitles to MP4 Permanently:

Before getting started, you need to download corresponding subtitles to your computer (most of the subtitle files are with .ass and .ssa file extension). Then follow the easy steps to merge subtitles with MP4 video into a new file or onto DVD.

Detailed Steps on How to Add Subtitles to MP4 Video on Windows

  1. Load your target MP4 video to the subtitle converter.
  2. Import the subtitles to the video subtitle maker.
  3. Merge the subtitle to the MP4 video and convert it into a new video file.

Step 1 Open an MP4 video and import subtitles.

After opening Wondershare UniCoverter, click and select the Video Editor category from the left section, click the Subtitle tile from the right, and import the source MP4 video from your local computer to the program.

open Wondershare Subtitle Editor

Next, pause the video preview, click the Import Subtitles from under the preview window, click the Add from the box that appears in the Subtitle field at the bottom, and select and import the SRT file with the subtitles to UniConverter.

Enter the MP4 Subtitles Editor Windows

add subtitle

Step 2 Customize the subtitles text and attributes.

If the text of the subtitles is incorrect, select the wrong one from under the preview window, and replace it with the correct caption in the Subtitle text field that is present at the upper area of the right section.

The display duration of the subtitles can be adjusted in the Start Time and End Time fields. As for the attributes, you can change the font type, size, and color, along with making the text bold, italicizing it, or adding an underline to it using the available corresponding options under the Font section.

The stroke width and the opacity level can be managed using the Outline Width drop-down list and the Transparency slider respectively. You can even specify where the text should appear on the screen with the help of the Top, Middle, and Bottom buttons from under the Position section. Once everything is set up, click the OK to save the changes and to get back to the main window.

change subtitle style

Step 3 Set output preferences and save the video.

Use the Output Format menu’s the Video tab to choose a format and its resolution (MP4 for this example), set a destination folder in the the File Location field, and click the Save to add the subtitles to the MP4 video file.

Export MP4 video with subtitle

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Part 2. Edit Your Own Subtitles to Create A New MP4 Movie

To add subtitles to your recorded MP4 video clips, Wondershare Filmora (originally Wondershare Video Editor) makes it pretty easy. This program provides extensive text templates you can use to add captions for a better explanation.

This program is available on both Windows and Mac platforms. Please download the right version as per your operating system. In the following, the Windows version is taken as an example.

Step 1 Import your source MP4 files.

Launch this program and select the "16: 9" or "4:3" aspect ratio as to enter into the primary window. Then click Import to load your MP4 videos from the file folder on your computer. The imported video clips will be shown as thumbnails in the left pane.

When you load all MP4 files you need, simply drag and drop them to the Video Timeline.

burn subtitles to mp4

Step 2 Add subtitles to MP4 video and customize it.

Now switch to the Text tab, and then drag your favorite template to the place you want to the Timeline. Now you'll see a text thumbnail reading T.

Double-click it to access the text editor panel. Here you can type in your own text and customize the font, color, animation, etc. as you like. After that, click the Play icon to preview the real-time effect.

Add subtitles to MP4 video and customize it

When the subtitles come into the right place in your MP4 video, drag the Text file duration to sync for your video. Meanwhile, a Timeline Zoomer is available to zoom in/out the Timeline to help you locate exactly the place you want.

Step 3 Export a new movie.

When everything is okay, hit Create to export a new MP4 file included with subtitles. In the output window, you can select MP4 from the "Format" tab, or go to the "Devices" tab to pick up a device icon like an iPad to save it on your computer. You can even share your creation directly onto YouTube or burn it to a DVD.

Export a new movie

Conclusion

Both methods mentioned above to burn subtitles to MP4 video save you a lot of time and trouble. If need, you can also make other video editings like rotate, trim, cut, adjust brightness, contrast, apply background music, transitions, visual effects, and more. In that way, you can get the most out of your MP4 files. If you only need one professional editing tool, then choose Wondershare Filmora; but if you want to own a complete video solution, such as downloading videos from YouTube, convert videos to many different videos, record videos, etc., then Wondershare UniConverter would be more economical. Just download it and have a try.

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Christine Smith

Christine Smith

chief Editor

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