Movavi's online tool is meant for users who want to edit their files quickly and easily. The app opens in the browser and has an utterly clean interface. To insert subtitles into MP4, it doesn't take much. You upload the file, insert the text, adjust the timing, and export – all without getting lost in complex menus. If the goal is to add subtitles to an MP4 online for free, Movavi is the first consideration.
Movavi Video Editor
Add subtitles manually or automatically with AI
Customize font, size, color, and position of subtitles
Export videos with embedded subtitles in popular formats
By clicking the download button, you're downloading a free version of the program.*
Add Subtitles to MP4 Online for Free
How to hardcode subtitles to an MP4 online for free
Step 1. Add the file
Click the Add file button. After selecting the video on your device, the video uploads to the platform and opens in the editing area.
Step 2. Add subtitles and adjust the timing
In the Subtitles section, you can write the text, set the beginning and end of each segment, and add new lines manually. If you already have a file ready, the tool’s functionality also allows you to embed SRT in MP4 – a useful property for those who work with recurring content.
Step 3. Export the result
After synchronizing the text, review the preliminary result in the preview area and adjust the format in the corresponding panel. When everything is in order, click Export Result. A new MP4 with subtitles works well for social media, short lessons, and presentations. It helps make your content clearer without slowing things down.
How to add text to an MP4 on desktop
Movavi Video Editor is a more sophisticated solution for editors who need more control. This desktop tool combines video editing and text tools in one simple workflow. You can generate automatic subtitles with AI or type them in the editor. The software contains a rich library with various text styles and creative presets. You can change fonts, colors, and the position of the text on the screen. This editor synchronizes your subtitles with the audio to ensure a professional look.
Step 1. Import your video to the timeline
Open the software and click Add Files to upload your video. Drag your clip onto the timeline. This step helps you add captions to MP4 with high precision. You can also drag files directly into the program window to save time.
Step 2. Insert subtitles into MP4
Go to the Audio tab and click Auto subtitles for an AI draft. You can also open the Text tab to embed SRT in MP4 manually. Pick a preset and adjust the font, size, and color in the preview.
Step 3. Export your video
Click Export and choose your output settings for the final file. This action will hardcode subtitles to MP4 so they stay visible everywhere. Your video is now ready for social media or messenger apps. This is the best way to permanently add subtitles to MP4 for any screen.
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Frequently asked questions
How can I add subtitles to an MP4 video for free?
How can I add subtitles to an MP4 video for free?
You can use Movavi’s online tool to add subtitles to an MP4 at no cost. Upload your video and then insert subtitles into mp4 manually or add SRT to MP4. It works in your browser’s current tab and does not ask for any installation. You just need a stable internet connection to complete your editing project.
Will there be a watermark on my MP4 after adding subtitles?
Will there be a watermark on my MP4 after adding subtitles?
No. When you use the online software, your final movie comes out without a watermark. You can permanently add subtitles to MP4 and get a clean video. It is ready for your audience right after the download. This makes the online version a very practical choice for creators.
What is the difference between hardcoded and closed captions in MP4?
What is the difference between hardcoded and closed captions in MP4?
Hardcoded text stays on the video and you cannot turn it off. Closed captions are different because the viewer can hide them. When you hardcode subtitles to MP4, the text stays part of the video image forever. This way your text shows up even on players that do not support extra files.
Can AI automatically generate subtitles for my MP4 video?
Can AI automatically generate subtitles for my MP4 video?
Yes. In Movavi Video Editor, use the Auto subtitles feature to create text fast. You can review the draft and then add captions to an MP4 with one click. It is a huge time saver for long videos. The software listens to your audio and types the words for you.
Can I edit the font, size, and color of the subtitles?
Can I edit the font, size, and color of the subtitles?
Yes. Movavi Video Editor gives you full control over the look. You can change the font and color or embed SRT in MP4 with your own style. This makes it easy to insert subtitles into MP4 that look great. You can also move the text to any spot on the screen.
Is Movavi Online Video Editor completely free?
Is Movavi Online Video Editor completely free?
Yes. All features are available for free – no payment required.
Can I use Movavi Online Video Editor on Android and iPhone?
Can I use Movavi Online Video Editor on Android and iPhone?
Yes – it works on both Android and iPhone, and it’s free to use.
Does Movavi Online Video Editor add a watermark when exporting videos?
Does Movavi Online Video Editor add a watermark when exporting videos?
No. You can export videos without a watermark.
Movavi Video Editor
Create awesome videos easily
*The free version of Movavi Video Editor may have the following restrictions depending on the build: watermark on exported clips, 60-second video or 1/2 audio length limit, and/or some advanced features unavailable when exporting videos.
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