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Combine an SRT file with MP4 video and continue editing
Polish and customize SRT files with free online tools
Reach more viewers and get them engaged
With half of Americans using subtitles at least some of the time they watch videos, there's no denying they're a key part of every modern content creator's toolkit. But when it comes to TikTok and Instagram, captions are an absolute must-have, since 80% of the Gen Z audience that floods these platforms prefers captioned content. Younger viewers are simply accustomed to watching subtitled videos, and find it improves their concentration,
Kapwing breaks the captioning process into a couple easy steps, allowing you to add any SRT subtitle file to an MP4 in moments, and sync subtitles with video for perfect timing. so every video not only encourages focus and retention, but reaches every potential viewer — whether they're hard of hearing, watching on mute, or multitasking.
Strengthen brand perception and messaging
With so many viewers using subtitles, they've become a core part of brand perception — so they need to be completely accurate on every video. This is especially true of advertisements you run on Facebook and YouTube, since ads with captions enjoy a 13% improvement in brand linkage, and a majority of viewers mute ads on these platforms. Make sure your unique message is flawlessly displayed, so viewers remember your brand name and message.
Kapwing makes perfect captioning easy, giving you total control over your final SRT file. Easily upload SRT-format captions, merge lines, insert new text, and closely proofread them until they're perfect. With an easy-to-use Brand Glossary, you can also input and save custom spelling for commonly-misspelled words, so they auto-correct in every new SRT file you upload.
Maintain a coherent aesthetic on every video
Adding captions to a video is great, but the last thing you want is for them took totally different in every post — you'll disrupt your overall aesthetic and cause discontinuity for viewers, decreasing your odds of converting. Kapwing enables you to fully customize your SRT subtitles online with font, size, color, and transition options. To make subtitles pop even more, you can add animations to make specific words stand out, word-by-word, karaoke style.
If you're part of a larger team or outsourcing some of your efforts, it's easy to manage brand consistency using a Brand Kit to set color palettes, logos, fonts, and templates. These automatically apply to new projects or workspaces, making SRT conversion into brand presets painless and quick.
Command attention on every platform
How creators in every field leverage the SRT file converter
Facebook & YouTube Ads
Digital marketers add SRT files to video to optimize Facebook and YouTube ad creation, hardcoding ad content as captions to reinforce key messages and ensure they're understandable without audio
Instagram & TikTok Videos
Influencers and brand managers on Instagram and TikTok burn SRT files to MP4, catering to platform content preferences: short-form videos that often autoplay on mute. This makes time-sensitive messages easier to receive, with burned-in captions detailing products, tips, and promo codes.
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X (Twitter) Highlights
Content marketers on X (Twitter) convert SRT to MP4 online to make their news and live event highlights as accessible and engaging as possible. Since X supports short content and autoplay, hardcoded subtitles ensure viewers understand everything without needing to turn on captions or audio.
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LinkedIn Presentations
Business professionals and online educators add SRT to MP4 to quickly elevate their LinkedIn presentation quality and accessibility. Whether it's a video seminar or a how-to guide, burned-in, perfectly edited on-screen captions help highlight key points and make the content easier to follow
How to Add SRT Subtitles to Mp4
- Upload MP4 file
Upload an MP4 video file via URL link or files folder.
- Upload SRT file
Open the "Subtitles" tab in the left-hand toolbar. Then, select "Upload SRT/VTT" to upload your own subtitle file.
- Edit and export
Once your SRT subtitles are uploaded, proofread and customize. When you’re finished editing, click "Export Project" and download your MP4 video with embedded subtitles.
What's different about Kapwing?
Frequently Asked Questions
Is Kapwing's online SRT to MP4 tool free?
Yes, the online Add SRT to MP4 tool is free for all users to try. If you're using a Free Account, you can export videos up to 4 minutes long. Once you upgrade to a Pro Account, you can create videos up to 120 minutes long, receive unlimited cloud storage, and get access to the Brand Kit and custom fonts.
Is there a Kapwing watermark on exports?
If you are using Kapwing on a Free account then all exports — including with the SRT file to MP4 video tool — will contain a watermark. Once you upgrade to a Pro Account the watermark will be completely removed from your SRT subtitled videos.
How do I combine SRT subtitles with MP4?
Combining SRT subtitles with an MP4 video is a straightforward process that can be done using various online tools or video editing software. One popular method is to use Kapwing's online platform, where you can upload both the MP4 video and SRT subtitle file. Once uploaded, you can easily sync the subtitles with the video timeline, ensuring accurate timing and alignment. After synchronization, Kapwing allows you to export the combined video with embedded subtitles in the desired format, ready to be shared or published.
How do I permanently add SRT files to an MP4 video?
To permanently add SRT files to an MP4 video, you can utilize video editing software such as Kapwing's online video editor. These tools provide options to import both the MP4 video and SRT subtitle file into the editing timeline. From there, you can overlay the subtitles onto the video track and adjust the timing and appearance as needed. Once you're satisfied with the placement and synchronization of the subtitles, you can export the video with the embedded SRT subtitles, creating a seamless viewing experience for your audience.
How do I add SRT files to a video in Windows?
Adding SRT files to a video in Windows can be done using various video editing software available for the platform. One option is to use Kapwing, which allows you to import both the video file and SRT subtitle file into the video editor. From there, you can overlay the subtitles onto the video timeline and adjust the timing and appearance as necessary. Once you've configured the subtitles to your liking, you can save or export the video with the embedded SRT subtitles directly from the software, ready to be shared or distributed.
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Kapwing is free to use for teams of any size. We also offer paid plans with additional features, storage, and support.