VTT to MP4: How to Add or Convert VTT to MP4

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VTT to MP4: How to Add or Convert VTT to MP4

Last Updated: 2025. 06. 12

How do I add VTT subtitles to an MP4 video?

How to merge a .vtt file and a .MP 4 file?

How to convert VTT file to MP4?

As VTT is a popular subtitle format, most subtitles files you download from the web are in VTT format. With a downloaded VTT file, you might want to add it to an MP4 file for viewing or wonder ways to convert it to an engaging MP4 video. That's what we talk about here - a guide on how to add or convert VTT file to MP4. Let's dive in right now!

Quick View of Contents

Part 1. Permanently Add or Convert VTT File to MP4 Online

Part 2. Add VTT File to MP4 with VLC Media Player

Part 3. Add VTT File to MP4 Using Happy Scribe

Part 4. Frequently Asked Questions

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Part 1. Permanently Add or Convert VTT File to MP4 Online

Supposing you're looking for ways to permanently add VTT file to MP4 or need some professional tools to convert VTT file to a captivating MP4 video, a versatile video editor called FlexClip will help you get out of trouble.

It supports one-click operation to merge your subtitle files to mp4, with full control over subtitle styles, animation effects, text color and font to make it attractive. Additionally, converting VTT file to MP4 file in FlexClip is achievable: it leverages text-to-speech feature to convert subtitles to speech, along with an extensive media stock library for images, background music, videos, text animations and more to composite an engaging MP4 video. From AI text-to-image, auto subtitle generator to text-to-video, inspiration can be endless in this free VTT online editor.

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1) How to Add VTT to MP4 with FlexClip for Free

Step 1

Click on Media and simply upload your MP4 file. You can import your file form anywhere, whether it's on desktop, Google Drive or mobile phone.

Upload Your MP4 File You'd Like to Add Subtitles to FlexClip

Step 2

Go to Subtitle panel and choose Upload Subtitle File to add your VTT file. Once it's loaded, you will see subtitles onscreen with timestamp sequence.

Import and Add Your VTT File to MP4

Step 3

Next, double-click one text, hit Style on the toolbar and choose from subtitle presets to make it eye-catching either applying subtitle highlighting effect or not. Don't worry about the rest subtitle as the new style will automatically be applied to all your subtitles.

Choose from Various Subtitle Presets and Pick Your Favorite One to Apply

Step 4

Level up your MP4 videos by adding transitions, animations or directly export your MP4 videos with subtitles.

Bonus Tips for You to Fix Subtitles out of Video Problems:

Generally speaking, as long as the timestamps in the subtitle file perfectly match the video, you should now have a video where the subtitles are synchronized with the audio and visuals. But what if the timing is off? Don’t worry! FlexClip offers the following simple solutions:

1. If there are only a few instances where the subtitles and audio/video are out of sync, you can manually adjust the timing in FlexClip while listening to the audio. Simply modify the timestamps to the correct points, and FlexClip will automatically reposition the corresponding subtitles to match the visuals.

Manually Adjust Timestamp to Fix the Out of Sync Issue

2. If there are too many such instances, manual adjustments would be both time-consuming and exhausting. In this case, you can try FlexClip’s AI Subtitle Generator to automatically generate subtitles directly from your MP4 video. With an accuracy rate of up to 95%, it supports 140+ languages and dialects, effortlessly adding subtitles to enhance your video’s engagement and accessibility. Click the "AI Subtitle Generator" button below to try it out now!

Fix the Out of Sync Issue by Generating New Subtitles from MP4 Video with FlexClip's AI Subtitle Generator

AI Subtitle Generator

2) How to Convert VTT to MP4 Video

Aside from merging VTT to MP4, you might be eager to convert VTT file to MP4. Since VTT is a subtitle file only containing timestamp, subtitles and punctuation, you can't directly use it to generate an MP4 video. Instead, transcribe it into speech and perfect it with images, music and other animation. Exactly, FlexClip can make it for you and below is how to do.

Convert VTT to MP4 Video

Step 1

Click on Convert it Now below and upload your VTT file under the Subtitle panel.

Convert VTT to MP4: Import VTT File to FlexClip

Convert it Now

Step 2

Once it's loaded, the subtitles with timestamp will appear on the screen. Here tap the Speech button to convert the VTT file into voices.

Convert VTT to MP4: Enable the Subtitle to Speech Feature

If you want to use a VTT subtitle file to generate an MP4 video in another language, FlexClip can help you achieve that as well. Simply upload the VTT file to FlexClip, wait for the subtitles to load successfully, then click the "Translate" button at the top. Select your desired target language for the text and click "Translate." FlexClip will automatically translate your VTT subtitles into the chosen language. Afterward, click the "Speech" button to generate voice-over audio.

Translate VTT File to Another Language to Generate Voiceover for MP4 Video

Step 3

Let's do some setups for voice generation. Set the language, accent, avatar, tone style, speed, pitch for the generated voice and click on Generate to launch the process.

Convert VTT to MP4: Make Setting for the Voice

Step 4

Once the converted audio is added to the timeline, it's time to perfect your voice file with photos, images, text and transition effects. You can directly select from FlexClip's royalty-free media stock, use AI image generator to generate crafted and original photos from your text or capture screen/webcam recording for MP4 video.

Convert VTT to MP4: Perfect the Audio with Visuals

Step 5

Once you're satisfied with the result, move to the Export panel to save the video as MP4.

Convert VTT to MP4: Export the Converted Video as MP4

Part 2. 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.

Step 1

Download VLC Media Player and complete the installation.

Step 2

Load the video of interest to play with VLC. You can do this by loading your MP4 video from the computer or opening it with the VLC media player.

Step 3

Hit Subtitle panel > Add Subtitle File > use the file explorer to find the VTT file > select it. Now the subtitles appear on your screen.

Add VTT File to MP4 Video with VLC

Note

Remember the program would not add the subtitle files to the video, which means you will always have to keep the subtitle file if you need to view them.

Part 3. 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

Step 1

Use the link: https://www.happyscribe.com/subtitle-tools/add-vtt-to-mp4 to access Happy Scribe subtitle adder;

Step 2

Click on Select File to upload the MP4 video which you want to burn your subtitle file.

Step 3

Now it's time to load your VTT subtitle file by tapping on Select File again.

Step 4

Modify your subtitles by changing the color, font, and the position of your text.

Step 5

It will take a few minutes to render the MP4 video. After that, you can download it to your computer.

Add VTT File to MP4 Video with Happy Scribe

Part 4. 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 FlexClip 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!

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Bella /

Full of vitality, curiosity and hope, Bella is an energetic copywriter at FlexClip. She mainly concentrates on video creation and troublesome issues related to video editing, providing users with practical solutions and tricks. Personally, Bella loves novels, sci-fi movies, cooking and travel. And, she believes that all her life is the best arrangement from God.