Optimized for X (Twitter) Threads

# Make Your X (Twitter) Videos Unmissable with AI Captions

Stop the scroll in the feed. Auto-generate word-level animated subtitles with 99%+ accuracy, custom fonts, and emoji reactions designed for viral tech and startup threads.

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## Key Features

Word-by-Word Animation

Keep the fast-paced Twitter audience engaged with captions that light up as you speak, perfectly synced with your audio.

99% Transcription Accuracy

Our AI engine handles complex tech jargon and startup terminology with ease, requiring minimal manual correction.

Custom Branding & Emojis

Match your brand's aesthetic on X with custom fonts and colors. Automatically insert relevant emojis to increase click-through rates.

Native SRT Export

Burn captions directly into your video for maximum impact or export a clean SRT file to upload natively to the X Media Studio.

## How It Works

1. 1

   Upload to Browser

   Drag and drop your 16:9 or 1:1 video into the DevMotion editor. No installation or desktop app required.

2. 2

   AI Transcription

   Click 'Auto-Caption' and select your language. Our AI generates timed subtitles with word-level precision in seconds.

3. 3

   Style for the Feed

   Choose your animation style, add emojis, and adjust colors to make your text pop against the X dark mode interface.

4. 4

   Export and Post

   Export in 1080p or 4K and share directly to your Twitter thread to maximize reach and engagement.

## Use Cases

Tech Product Demos

Showcase your SaaS features in a Twitter thread with clear, animated captions that explain the value prop even when the sound is off.

News & Commentary

Breaking news clips perform better when users can read the headlines and key quotes instantly while scrolling through their timeline.

Founder Updates

Build in public by sharing talking-head videos. Captions make your updates accessible and professional for the startup community.

## Frequently Asked Questions

How do I add captions to a Twitter video without a watermark?

DevMotion allows you to export 720p videos with AI-generated captions for free without any watermarks. Simply upload your video, run the auto-caption tool, and export.

What is the best caption style for X (Twitter) viral videos?

Word-level animations (where the current word is highlighted) generally perform best on X because they grab attention in the fast-scrolling feed and keep viewers locked in.

Can I edit the AI-generated subtitles if there is a mistake?

Yes, our editor provides a full transcript view where you can click any word to correct spelling, adjust timing, or change the emoji reaction.

Does Twitter support SRT files for accessibility?

Yes, X allows you to upload SRT files in the Media Studio. DevMotion gives you the option to either burn the captions into the video or download the SRT file separately.

Will these captions work for videos longer than 2 minutes?

Absolutely. While free X accounts are limited to 2:20, DevMotion can caption videos of any length, making it perfect for X Premium users who post longer content.

## Related Tools

Auto-Cut Silence for X

Remove filler words and silences to make your Twitter clips punchy and fast.

Translate Video for Global Reach

Reach the international tech community by dubbing your videos into 50+ languages.

Video API Documentation

Automate your video captioning workflow at scale using our REST API and MCP.

## Add Captions to Video

Free to start. No credit card required.

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