How do I add VTT subtitles to an MP4 video?
How to merge a .vtt file and a .MP 4 file?
VTT is a popular subtitle format. Most movie subtitles you download from the web are in VTT format. So how to add VTT subtitles file to an MP4 video? In this post, I will walk you through how to add VTT to MP4 in different ways. Let's dive in right now!
Free and Customizable Video Templates with Subtitles for You:



Learn More: How to Add an SRT File to a Video
Part 1. Add VTT File to MP4 with VLC Media Player
VLC Media Player is a workable tool that provides a quick solution for adding VTT files to MP4 videos. What's more, it's compatible with a variety of video formats, which can be called the trump card for you to watch videos with subtitles. It's free and open source. You can use it to subtitle your MP4 videos on Windows, Mac and Linux computers without paying a dime.
Steps to add VTT files to MP4 with VLC Media Player
Before adding subtitles, make sure the files' name for the video and the VTT subtitle file is exactly the same or it won’t work.

Add VTT File to MP4 Video with VLC
Part 2. Add VTT File to MP4 Using Happy Scribe
Happy Scribe is a professional tool to add VTT file to MP4 videos in minutes. Except for that, this transcript editor also allows you to add other subtitle files to MP4 videos, including TXT, SRT, STL and more. Moreover, you can use the sharing feature to collaborate with all your stakeholders by sharing your transcripts and subtitles, no matter where they are in this world.
Full guide to add VTT file to MP4 online using Happy Scribe

Add VTT File to MP4 Video with Happy Scribe
Bonus Tips: The Best Tool to Add Subtitles to MP4 Permanently
Supposing you fail to find the VTT subtitle file of your related MP4 video or need professional tools to customize your subtitles design, a versatile online video editor will help you get out of trouble.
FlexClip, an easy-to-use yet powerful video editor, offers the auto-subtitle feature to automatically generate subtitles from your MP4 videos in 180+ languages in different accents. Meanwhile, the accuracy rate is up to 98%. Additionally, there are loads of editable text styles and eye-catching animation designs to make your subtitles stand out in clicks.
Go to FlexClip's editor page to upload your MP4 video. Before directly generating subtitles, you can crop, trim or cut out unnecessary clips from your footage.
Tap the Subtitle icon and click on the Auto AI Subtitle icon to generate the subtitle for you MP4 video. Here you'll be navigated to choose the language with different accents and the process content. After that, tap the Generate Subtitles icon to launch the process.

Make Settings of the MP4 Video
Go through the subtitle result to see if there are any misspellings or use the merger tool to make some adjustments.

Check the Subtitle Result
Now you can choose to keep edits by adding transitions, animations or export your MP4 videos with subtitles.
Frequently Asked Questions
1.Why should I add VTT file to my MP4 file?
There are many reasons why you should burn your VTT file on the MP4 file. Firstly, many platforms don't allow you to edit the style of your subtitles. Moreover, some media platforms like Instagram do not accept VTT subtitle files, so hardcoding your VTT file to your MP4 file is a feasible way to make a video with subtitles.
2.How can I merge the VTT and MP4 file?
You can use some online subtitle editors like Happy Scribe to merge the VTT file and MP4 video effortlessly.
The Bottom Line
That's all for how to add VTT file to MP4 video. If you need to hardcode subtitles into videos, try the above free ways!