Add Subtitles to MKV Online

Add subtitles to MKV manually or with an SRT file

Add Subtitles to MKV

Options to Choose from

You can decide how to add subtitles to your video: manually or with an SRT subtitle file. In any case, you can edit them then.

Edit Subtitle Font

We don't limit you! Select a font, its size, align the text. Also, choose its color and background to make the subs look brighter and seen on both black and white.

Online Subtitle Adder

The tool is completely online which means that you don't need to download any software or app to your device. It's both faster and secure!

MKV subtitles

MKV stands for Matroska Multimedia Container. This format is popular for storing visuals and audio. A single MKV file can contain unlimited videos, audio tracks, and subtitles, making it an ideal choice for films and video presentations.

There are two main types of subtitles: open and closed ones. Open or hardcoded subtitles are burned in the video permanently and can’t be turned off, while closed ones are optional and can be turned on or off when a viewer wishes. Closed subtitles are usually provided for various languages so that the user can choose the most suitable track or get along without them at all.

Regardless of their type, subtitles make a video more comprehensive and available for watching, for example, in public areas or when one can’t listen to the audio.

However, the MKV format is not compatible with all the tools and platforms, especially free ones, so adding SRT to MKV may become a challenge. Fortunately, Clideo allows you to hardcode subtitles to MKV by creating them from scratch, adding an SRT file, or generating captions automatically from the video. The oll can also work as a file converter. The recommended formats for social media are MP4 and MOV, and our tool supports them and many others.

How to burn subtitles into MKV

Need help?
Upload your file
You can select recordings from your device or use videos in your cloud storage. For the first option, hit the blue button "Choose file". For the second, call a drop-down menu on the right of the pane. Select a clip saved to your cloud storage.
Merge SRT with MKV
As soon as the video is uploaded, you can upload a ready .SRT file to merge subtitles with MKV automatically or add captions manually. In the editor, you can add, delete, and edit subtitles as you wish. Change the way the subtitles look in the "Styles" tab. When you are happy with the result, click "Export". The tool will add hard subtitles as an overlay over your video that cannot be turned off or on later in a player.
Save the result
Have a quick preview and make sure that you got what you needed. Save the video with embedded subtitles to your device or cloud storage account. If changes are needed, click "Edit".
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Get Clideo Video Editor App for iPhone

Download the Clideo Video Editor App to your iPhone to create your own video and edit it in any way: combine video, images, text, and music in the multi-track timeline.

Ready to add subtitles to your video?
Let's do it with our online subtitle editor!