Vidulk is an AI-powered mobile app for iOS and Android that turns long videos and audio into viral short-form clips. It also includes an AI image studio and professional caption editor.

How does AI clip detection work?

Import a video or paste a link — Vidulk transcribes the audio using AI speech recognition that supports 99 languages, then analyzes the transcript to find the most engaging moments. Each clip is scored by virality potential and categorized as Insight, Story, Funny, Tactical, Controversial, or Emotional.

What languages does Vidulk support?

Vidulk supports speech recognition in 99 languages including English, Spanish, French, German, Korean, Japanese, Chinese, Arabic, Hindi, Portuguese, and many more. The app interface is available in over 30 languages. Language is detected automatically.

What caption and editing features are available?

Vidulk includes 7 caption styles (Highlight, Karaoke, Typewriter, Minimal, Bold Pop, Gradient, and more), customizable fonts, colors, and animations. Export in multiple aspect ratios (9:16 for Shorts/Reels, 1:1 Square, 4:5 Portrait, 16:9 Landscape) at up to 4K resolution.

What is the AI Image Studio?

AI Studio lets you generate thumbnails and images from text prompts with 6 artistic styles including Realistic, Illustrated, Abstract, Minimalist, Anime, and Watercolor. It also includes an Image Enhancer that upscales images 2x or 4x. All processing happens on-device for privacy.

What content types does Vidulk work with?

Vidulk is optimized for podcasts, YouTube videos, interviews, lectures, gaming highlights, vlogs, music, sports, and news content. Import from YouTube, TikTok, Instagram, Twitter/X, Facebook, or upload directly from your camera roll.

Does Vidulk work with long videos?

Yes. Vidulk handles videos of any length. Short videos are processed on-device, while longer videos (over 5 minutes) are processed using server-side AI for faster and more reliable results.

What platforms is Vidulk available on?

Vidulk is available on both iOS (App Store) and Android (Google Play Store). The app interface is available in over 30 languages.

Yes. Video transcription and AI image processing happen on-device. Your videos are not stored on external servers permanently. You can delete your account and all data at any time from the app settings.

Can I use Vidulk for audio-only content like podcasts?

Yes. Vidulk fully supports audio-only content. Import MP3, M4A, WAV, or other audio files. AI detects the best moments and you can add AI-generated background images or choose from 1,200+ built-in backgrounds to create video clips from audio.

Can Vidulk remove captions or subtitles from videos?

Yes. Vidulk includes AI-powered caption removal that automatically detects and removes burned-in captions and subtitles from your videos before clipping. It works best with dynamic/moving captions like those on TikTok, Reels, and YouTube. Enable it with a simple checkbox when importing your video. Processing takes 7-20 minutes and uses additional credits based on video length.

How do I export clips from Vidulk?

After editing, choose your aspect ratio (9:16, 1:1, 4:5, or 16:9), resolution (720p, 1080p, or 4K), and export. Clips are saved directly to your Photos library and can be shared instantly to any platform.

Submagic vs Opus Clip: Real Comparison for Creators

If you’re choosing between Submagic and Opus Clip for AI-powered short-form video creation, here’s a fact-based, honest comparison - plus a look at Vidulk as a mobile-first alternative.

Submagic vs Opus Clip vs Vidulk (as of 2026-08)
	Submagic	Opus Clip	Vidulk
Platforms	Web	Web, iOS, Android	iOS, Android
Primary use	AI captions + short-form editing for TikTok/Reels/Shorts; Magic Clips…	AI long-to-short clipping for podcasts/talking-head video…	Mobile AI clipping
AI finds the best moments	Yes	Yes	Yes
Auto captions	Yes	Yes	Yes
Free plan	Yes	Yes	Yes (credits)
Watermark on free	Yes	Yes	See app
Starting paid price	$19/mo (Starter, monthly) or $12/mo billed annually; Magic…	$15/mo (Starter, 150 credits/mo, monthly billing as…	Pay-as-you-go credits
Mobile app	No	Yes	Yes

Sources: https://www.submagic.co/pricing · https://www.opus.pro/pricing. Prices/limits change - verify with the vendors.

Submagic vs Opus Clip: Honest Head-to-Head for Creators (2024)

Key Features: How Submagic and Opus Clip Actually Work

Submagic is focused on AI captions and short-form video editing for TikTok, Reels, and Shorts, with AI moment detection available only through its paid Magic Clips add-on. You upload via web, and the tool generates stylized, captioned clips. Opus Clip specializes in AI long-to-short video clipping, aimed at podcasts and talking-head videos. It highlights viral moments, auto-generates captions, and offers a virality score. Both tools use AI to find the best moments and add captions, but Opus Clip’s free plan allows for longer uploads (by minutes, not file size) and includes mobile apps for iOS and Android.

Pricing and Free Plan Limits

Submagic: Free plan allows 3 videos per month (max 1:30 each, 200MB, watermark, web only). Starter plan starts at $19/month or $12/month (annual), but AI moment detection (Magic Clips) is a separate $19/month add-on.
Opus Clip: Free plan gives 60 minutes of video processing per month (watermarked, 1080p, storage expires after 3 days). Paid plans start at $15/month for 150 credits (1 credit = 1 minute of video), with watermark-free exports and more import options.

Both tools add a watermark on free exports. Opus Clip’s pricing is more flexible for those needing more minutes or mobile access, while Submagic’s best features require stacking plans.

Platforms: Web vs Mobile

Submagic: Web-based only - no native iOS or Android app. Mobile browser use is possible but less streamlined.
Opus Clip: Fully accessible via web, plus native iOS (iOS 16+) and Android apps.

If you need to clip and edit videos directly from your phone, Opus Clip is the only one of the two with a true mobile app.

Who Should Use Each Tool?

Gamers & Streamers: Submagic is popular for stylized captions and quick TikTok edits, but only on desktop. Opus Clip is more flexible for mobile workflow.
Podcasters & Talking-Head Creators: Opus Clip’s AI is tuned for long-form to short-form podcast and interview content, with features like virality scoring.
Marketers & Social Teams: If your workflow is desktop-based and you want custom captions, Submagic works. For teams on the go, Opus Clip’s mobile apps are a plus.

Mobile-First Alternative: Vidulk

If you want to clip long videos into short, vertical, captioned clips directly on iOS or Android, Vidulk is a free mobile app built for creators. Paste a video or link, and Vidulk’s AI finds the best moments for TikTok, Shorts, and Reels. It’s ideal for creators who prioritize mobile-first editing and need to work on the go.

Or skip the desktop tools - Vidulk clips, reframes and captions on your phone. Free to start on iOS and Android.

Try Vidulk

FAQ

Which is better for TikTok: Submagic or Opus Clip?

Submagic offers more stylized captions for TikTok, but only on web. Opus Clip supports TikTok exports and works on both web and mobile, making it more flexible.

Does Submagic have a mobile app?

No. Submagic is web-only, so there is no native iOS or Android app. You can try using it in a mobile browser, but it's not optimized for mobile.

Can I use Opus Clip for free?

Yes. Opus Clip’s free plan includes 60 minutes of processing per month with watermarked exports and 3-day storage. Paid plans remove watermarks and add features.

What’s the best mobile-first alternative to Submagic or Opus Clip?

Vidulk is a dedicated mobile app (iOS and Android) for AI-powered video clipping, ideal for creators who want to edit and export short clips directly from their phone.

Who should use Submagic vs Opus Clip?

Submagic is best for creators needing stylized captions and desktop editing. Opus Clip is better for podcasters, talking-head creators, or anyone needing a mobile workflow.