Add subtitle to MP4

With our tool you can easily add subtitles to MP4 videos without downloading any software.
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Add subtitle to MP4

Making videos that are easy to view in any situation is a must and the reality is that not everyone can watch your videos with sound. Adding subtitles will help your audience press play wherever they are and it will also enable people with hearing disabilities to enjoy your videos. 

With Flixier you can add subtitles to MP4 videos in a super easy to use interface that doesn’t take any effort to learn and the best part about it is that you don’t even need to download or install any software. Everything is done in the browser and processed by our super powerful cloud systems.

Add subtitle to MP4

Easily Add SRT to MP4

Using our online video editor you can add SRT files to MP4 with a few clicks. Our goal was to make a super easy to use tool that people with no video editing experience can use without having to waste hours learning a complex interface or watching video tutorials.

Embed subtitles in MP4 

When you use Flixier you get to embed subtitles in MP4 and they will always be there and show up regardless of the platform you are posting your video. You can even share it with friends and family on something like WhatsApp or a USB stick and the subtitle will be forever embedded in the MP4 video file.

Add srt to mp4 online

Because we are all about simplicity we made Flixier available online, directly from your browser. This means that you can add SRT subtitles to MP4 online on any computer and you don’t have to wait for downloads or installs that take up time and computer resources.

Automatically add subtitle to MP4

If you don’t have a subtitle file for your MP4 video you can easily generate a subtitle automatically from the audio present in your video This is a super simple process in Flixier, just click a video on the timeline and then click the Generate Subtitle button on the right side of the screen. The video will be processed and a subtitle will automatically be added to it.

How can I add subtitles to MP4

How can I add subtitles to MP4
Add MP4 and SRT to Flixier

The first step is to add your SRT and MP4 files to the Flixier library. You can import them from your computer or add them from other cloud services like Google Drive, Dropbox or OneDrive.

Add SRT to MP4

Now you can drag and drop the MP4 file on the timeline at the bottom of the screen and the SRT also on the timeline on a track above the video file. Make sure they both align by dragging them left and right on the timeline. 

At this point you can also make changes to the subtitle or customize its look, when happy move on to the next step.

Save the video

Now all you need to do is click the Export button at the top right of the screen and press, your video will be processed at super speed thanks to our cloud powered tech and it will automatically download when ready.

Why use Flixier to add subtitle to MP4

Make changes to your subtitle

Flixier is full fledged video editing software meaning that you can make any changes to your subtitle. After importing or generating a subtitle with Flixier you can make changes to the text and timings. You can get rid of any mistakes in the text and adjust your timings.

Customize subtitles

With our editor you can also use plenty of customization features to make your subtitles stand out and be easier to read. You can add backgrounds and change their colors, change the color and font of the text and even add a surrounding line making your subtitle more visible.

Convert audio to text 

Using our auto subtitle generation feature you can also convert audio to text. This means that you can add subtitles to your videos even if you don’t already have an SRT file. You can even download the generated file as text to use it in documents or as a YouTube description.

Add any subtitle file to MP4 

Not only can you add SRT to MP4 in Flixier but you can also add plenty of other subtitle file types. Support for anything from .VTL or .SUB to .STL and even .TXT is available, just try out importing your file and we are 90% sure it will work.


I’ve been looking for a solution like Flixier for years. Now that my virtual team and I can edit projects together on the cloud with Flixier, it tripled my company’s video output! Super easy to use and unbelievably quick exports.

Steve Mastroianni -

My main criteria for an editor was that the interface is familiar and most importantly that the renders were in the cloud and super fast. Flixier more than delivered in both. I've now been using it daily to edit Facebook videos for my 1M follower page.

Evgeni Kogan

I'm so relieved I found Flixier. I have a YouTube channel with over 700k subscribers and Flixier allows me to collaborate seamlessly with my team, they can work from any device at any time plus, renders are cloud powered and super super fast on any computer.

Anja Winter, Owner, LearnGermanWithAnja

Frequently asked questions.

Frequently Asked Questions

If you have any further questions, Get in touch with our friendly team
If you have any further questions, Get in touch with our friendly team

Can I add a SRT file in any language?

Can I add a SRT file in any language?

Sure, you can use Flixier to add SRT subtitles in any language to your video. Simply drag and drop them on the Flixier timeline on top of your video and that’s it.

Do I need to buy a subscription to add subtitles to mp4?

Do I need to buy a subscription to add subtitles to mp4?

No, you can use Flixier for free to test our adding subtitles to MP4. You don’t even have to create an account, just press the Choose video or Get Started buttons above and you’re good to go.

Can I make changes to my subtitles?

Can I make changes to my subtitles?

Of course, you can make a ton of changes to your subtitles using Flixier. Change the text color and font add a background and change its color too, you can even change the position and size of the subtitles.

Can I make changes to my subtitles?

Can I make changes to my subtitles?

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