Add subtitle to MKV

Fast & Easy: Add subtitle to MKV files with Flixier!
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Subtitles Made Simple: Add SRT to MKV Videos with Flixier

Have you ever felt lost in translation when watching a foreign film without subtitles? Or perhaps you made a video that requires captions, but you don't know where to begin. You can effortlessly add subtitles to MKV videos using Flixier, which will give your content the extra edge it needs to stand out.

Our goal is to provide creators with the resources they need to realize their ideas. Flixier therefore has you covered whether you're adding subtitles to a clip or producing a video for social media. With our online tool, you'll be able to quickly add SRT to MKV files, keeping viewers interested and returning for more.

Add subtitle to MKV

Add SRT to MKV s

Flixier is a versatile video editing platform that supports a wide variety of file types and formats, including one of the most popular subtitle file types available - the SRT subtitle format. With Flixier, adding SRT subtitles to MKV videos is a breeze, as there is no need to go through any complex conversion processes. All you need to do is upload your video and SRT subtitle file to Flixier, and our platform will take care of the rest.

Make Your Subtitles Pop

Making subtitles stand out and easy to read is crucial to ensure that your audience can fully engage with your content. With Flixier's customizable subtitle editor, you can make your subtitles pop, while still keeping the focus on your video. Flixier's subtitle editor allows you to change the font, size, and color of your subtitles, as well as add a background to make them stand out even more.

Simplify Your Workflow with Built-in MKV Support

Flixier's powerful video editing platform offers a range of features and tools to help you create professional-grade videos quickly and easily. One such feature is our built-in MKV support, which makes it incredibly simple to work with MKV files without having to worry about file conversions or other complex processes. With Flixier's built-in MKV support, you can simply import your MKV file into our platform, and we'll take care of everything.

Fine-tune Your Subtitles

Adding subtitles to your MKV videos is an important step in ensuring that your content is accessible to a wider audience. With Flixier's powerful subtitle editor, you can easily adjust subtitle timings and make changes to the text to ensure that your subtitles are accurate and easy to read. With just a few clicks, you can fine-tune your subtitles to ensure that they are perfectly synced with your video.

How can I add subtitles to MKV?

How can I add subtitles to MKV?
Add files to Flixier

The simplest method to get started is to click the Choose Video button above. From there, you can choose videos and subtitle files directly from your computer or quickly import videos using one of our direct integrations with cloud storage services to import videos in seconds.

Add subtitle to MKV

Now drag and drop the MKV video on the timeline at the bottom of the screen and the SRT subtitle file on a track on top of it. Make sure that the files are aligned to the left to avoid any synchronization issues. 

At this step you can also change the subtitle font, color size or add a background color. You can also choose to translate the subtitle, or, if you want to have more written notes, to add text to the video. All this is optional, and you can skip straight to the last step.

If, on the other hand, you want to generate subtitles with Flixier, all you need to do is follow a few simple steps. Open the subtitle menu located on the left-hand side of the screen and select "Auto Subtitle." Finally, click on "Start Auto Subtitle" and let Flixier work its magic. With just a few clicks, you can generate accurate subtitles for your video and ensure that your content is accessible to a wider audience.

Save the video

When you’re happy with the result simply press the Export button at the top right of the screen and then the Export and Download button. That’s it, you're done. The video will be processed by our superfast cloud servers, and it will be downloaded automatically to your computer when ready.

Why use Flixier to add subtitles to a MKV file?

Auto Subtitle Generation Feature

Adding subtitles to your videos can be a time-consuming process, but with Flixier's auto subtitle generation feature, you can dramatically reduce the time and effort required. With just a few clicks, you can add subtitles to your MKV videos quickly and easily.

Save Videos as MP4

After you add subtitles to your MKV file, Flixier will automatically convert it to MP4. This video file type is compatible across all platforms and devices making it easy to play anywhere without having to install any video player software.

Add Text to Video

Sometimes a subtitle is not necessarily needed but some text to explain a topic is still very useful. With Flixier you can add text to video with just a few clicks, express your ideas with simple text, animated text and even motion titles and calls to action.

Merge SRT or any subtitle with MKV 

We built Flixier to be compatible with a large number of file types meaning that you can merge SRT or any subtitle file with MKVs. You can add .VTT, .SUB, .STL or even .TXT subtitles to your MKV video just by dragging and dropping them in Flixier and on the timeline.


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 an MKV file contain subtitles?

Can an MKV file contain subtitles?

Yes, an MKV file can contain subtitles. MKV is a flexible video container format that allows users to embed subtitles directly into the video file, making it convenient for viewers to watch content with subtitles without needing a separate subtitle file. Users can also add an SRT file to an MKV video, which contains the subtitle information, allowing for greater customization and flexibility in creating subtitles. With Flixier, you can easily embed subtitles in MKV files or add SRT files to your videos, making it simple to create professional-quality videos that stand out from the crowd.

Do SRT files work with MKV?

Do SRT files work with MKV?

Yes, SRT files work with MKV files. SRT (SubRip Subtitle) files are a popular subtitle format that contain the subtitle information and can be easily added to an MKV video file. By adding SRT files to MKV videos, users can customize their subtitles with different fonts, sizes, and styles, making it easy to create captions that fit the video's tone and style.

Flixier makes it simple to add subtitles to an MKV file, whether you want to embed the subtitles directly into the video or add them as a separate SRT file. With Flixier's user-friendly interface and intuitive tools, you can quickly and easily add sub to MKV files, making it easy to create professional-quality videos that captivate your audience.

What subtitle formats does MKV support?

What subtitle formats does MKV support?

A variety of subtitle formats are supported by the adaptable video container format MKV (Matroska Video). MKV can play several of the most popular subtitle formats, including:

  • SRT (SubRip Subtitle) is a format for plain text files that holds the subtitle data.
  • SSA/ASS (SubStation Alpha) is a more advanced subtitle format that supports text formatting, styles, and effects.
  • SUB (MicroDVD) is a text-based subtitle format that supports basic subtitle information, such as start and end times.
  • IDX (DVD Subtitle) is a standard subtitle format for DVDs that stores the subtitle data in a separate file.

What subtitle formats does MKV support?

What subtitle formats does MKV support?

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