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.

Sizzle.gg Alternative: Who It's For, Real Limits, and Top Options

Searching for a Sizzle.gg alternative? Here’s a fact-driven look at where Sizzle.gg shines, where it falls short, and which alternatives - including mobile-first AI clippers like Vidulk - might be a better fit for your needs.

Sizzle.gg vs Vidulk at a glance (as of 2026-08)
	Sizzle.gg	Vidulk
Platforms	Web	iOS, Android
Primary use	AI gaming highlight generation from Twitch/YouTube VODs and local uploads	AI long-to-short clipping on your phone (podcasts, streams, gameplay, lectures)
AI finds the best moments	Yes	Yes
Auto captions	Not published	Yes
Free plan	Yes - Sizzle.gg watermark on highlights; unlimited VOD duration and streamer profile; 1080p downloading, vertical…	Yes - Free to start with included credits
Watermark on free exports	Yes	See app
Starting paid price	$4.99/mo (Starter, monthly; annual price not shown)	Pay-as-you-go credits (no monthly subscription)
Mobile app	No	Yes

Sizzle.gg data from https://sizzle.gg/ · https://www.sizzle.gg/subscription; prices and limits change - check the vendor's pricing page. Web service: link Twitch/YouTube accounts so Sizzle auto-fetches streams and detects kills, knockdowns, headshots, victories etc.; 'Universal AI' covers unsupported games. Starter adds 30-day storage of VODs and clips,…

Sizzle.gg Alternative: Honest Comparison, Limits & Best Picks

Who Sizzle.gg Fits Best

Sizzle.gg is purpose-built for gamers and streamers who want automated highlight reels from Twitch or YouTube VODs. Its web platform links directly to streaming accounts, auto-fetches streams, and detects gaming moments like kills or victories. If you want deep gaming-specific detection, desktop editing, and don’t need captions or a mobile app, Sizzle.gg is a strong choice. Its free plan includes unlimited VOD duration, but all exports have a watermark unless you pay for the Starter plan.

Sizzle.gg’s Real Limits

No mobile app: All work happens in the browser; nothing for iOS or Android.
No published auto captions: If you need captioned clips, Sizzle.gg doesn’t currently offer this.
Watermark on free plan: All free exports include a Sizzle.gg watermark.
Subscription pricing: Removing export limits and watermarks requires a monthly payment.
Gaming focus: Best for gaming content; less flexible for podcasts, interviews, or lectures.

Vidulk: A Mobile-First AI Clipper Alternative

Vidulk is a free app for iOS and Android that uses AI to find the best moments in any long video - podcasts, gameplay, interviews, lectures - and turns them into short, captioned, vertical clips for TikTok, YouTube Shorts, or Reels. Vidulk stands out if you want to edit and export on your phone, need auto captions, or prefer pay-as-you-go credits instead of a subscription. It's not limited to gaming, so it’s ideal for creators working with varied content. See the included data table above for a direct feature comparison.

Other Sizzle.gg Alternatives to Consider

Vidulk: Best for mobile, auto captions, and mixed content types.
Manual editors (CapCut, InShot): Offer more hands-on editing but lack AI highlight detection.
Other AI clippers: Most are web-based, desktop-focused, and may require subscriptions or lack true mobile support.

When choosing, consider your workflow (desktop vs. mobile), the type of content you create, and whether you need gaming-specific detection or broader AI clipping tools.

Try the mobile-first alternative - Vidulk clips, reframes and captions on your phone. Free to start on iOS and Android.

Try Vidulk

FAQ

Is there a free Sizzle.gg alternative with a mobile app?

Yes. Vidulk offers a free AI clipper app for iOS and Android, letting you create short, captioned clips from long videos directly on your phone.

Does Sizzle.gg add captions to highlights?

No. Sizzle.gg does not currently offer automatic captions for its highlights.

Can I remove the watermark from Sizzle.gg exports for free?

No. Removing the watermark requires a paid Sizzle.gg subscription.

What makes Vidulk different from Sizzle.gg?

Vidulk is mobile-first, supports more content types (not just gaming), adds auto captions, and uses pay-as-you-go credits instead of a subscription.

Are there browser-based alternatives to Sizzle.gg for fake content creation?

Yes. Vidulk.com offers free browser-based generators for fake chat, comments, and stories, intended for entertainment and mockups only.