Reelsub App - Animated Captions for Short Form Video

AI captions for Reels, Shorts & TikTok in one minute

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Updated Jul 2026 · Added Jul 2026

reelsub.app

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What is Reelsub App?

Reelsub is an AI-powered subtitle generator designed for short-form video creators. Upload a video (MP4 or MOV up to 5 minutes), choose a style preset, and instantly get a video with auto-generated, word-by-word animated captions embedded. The tool uses automatic speech recognition to detect every spoken word and highlights each one with smooth animations, eliminating manual transcription and timing work.

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Key Features of Reelsub App

Automatic speech recognition and subtitle generation
Word-by-word highlight animation synced to audio
Platform-specific style presets for Reels, TikTok, Shorts, and podcasts
Customizable fonts, colors, sizes, and animations
Video output up to 5 minutes
No watermarks
No manual transcription required

Who Should Use Reelsub App?

Create captions for TikTok videos quickly

Automate subtitle production for Instagram Reels

Add engaging captions to YouTube Shorts

Speed up podcast captioning workflow

Reduce time spent in traditional video editing software

Reelsub App: Pros & Cons

✓Pros

Fast processing - ready in about one minute
Accurate speech recognition with minimal manual text correction needed
Word-by-word animation improves viewer engagement
No credit card required to start free
Simple workflow: upload, select style, download
Platform-optimized presets save setup time

✕Cons

Limited subtitle placement options - cannot move subtitles to different positions throughout the same video
Maximum video length of 5 minutes

Frequently Asked Questions about Reelsub App

Can I upload videos longer than 5 minutes to Reelsub?

No, Reelsub has a maximum video length of 5 minutes. If you have a longer video, you'll need to split it into segments before uploading.

What video formats does Reelsub accept?

Reelsub accepts MP4 and MOV files. Upload a video up to 5 minutes and the tool will generate captions within about a minute.

Can I move captions to different positions in the video?

Reelsub has limited subtitle placement options and does not allow you to reposition captions at different points in the same video. The subtitles are generated in a fixed placement.

Does the free version of Reelsub add a watermark to the exported video?

No, Reelsub does not add watermarks to your videos, even on the free plan. You can download your captioned video without any branding overlay.