What Is Submagic.co?
Submagic is an AI video editing tool designed specifically for short-form content (TikTok, Reels, Shorts). Upload a video and Submagic automatically adds animated captions, relevant B-roll footage, transitions, zoom effects, and sound effects -- all optimized for engagement.
The Magic: What It Does Automatically
1. Animated captions with word-by-word highlighting (the style that is everywhere on social media)
2. B-roll insertion at relevant moments using AI-selected stock footage
3. Zoom effects on key words and phrases
4. Sound effects synced to emphasis points
5. Transitions between segments
6. Emoji overlays matched to the content
Our Test
We processed 20 videos through Submagic, CapCut auto-edit, and Captions app. Three content creators blind-rated the outputs.
Results
| Criteria | Submagic | CapCut Auto | Captions |
|---|---|---|---|
| Caption style | 9/10 | 7/10 | 8/10 |
| B-roll relevance | 8/10 | N/A | N/A |
| Overall engagement feel | 9/10 | 7/10 | 7/10 |
| Speed | 2 min | 3 min | 1 min |
| Customization | Medium | High | Low |
Submagic won on engagement feel and caption quality. CapCut offers more manual control. Captions is fastest but least polished.
What We Liked
Caption animations are the best in class. Multiple trending styles that match what viral creators use. Word-by-word highlighting, color emphasis on key phrases, and smooth animations.
B-roll automation is a game-changer. Submagic analyzes what you are saying and inserts relevant stock footage at the right moments. This alone saves 30+ minutes per video.
One-click processing. Upload, wait 2 minutes, download. The AI makes 90% of the right decisions without manual adjustment.
What Could Be Better
Pricing
Verdict: 8.5/10
Submagic is the fastest way to create engaging short-form content. If you are producing TikToks, Reels, or Shorts regularly, it saves 1-2 hours per video compared to manual editing. The caption quality and B-roll automation justify the price.
For voiceover content, pair Submagic with Lovo.ai -- use Lovo to generate the voiceover, then Submagic to add captions and B-roll.
Best for: Content creators and social media managers producing daily or weekly short-form videos.