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 a built-in video downloader, 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.

Can I download videos from YouTube, TikTok, and Instagram?

Yes. Vidulk includes a built-in video downloader that saves videos from YouTube, TikTok, Instagram, Twitter/X, Facebook, and other platforms directly to your device in original quality.

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.

How to Go Viral on TikTok: A Step-by-Step Guide

To go viral on TikTok, you need a strong hook, a clear payoff, vertical format, captions, and trending sounds. Consistency and watch-time are key.

1. Start With a 1-Second Hook

Grab attention immediately. The first second of your video should create curiosity or surprise. Use bold text, an intriguing question, or a dramatic visual. For example, a fake chat video made in Vidulk can open with "You won't believe what happened next..." to encourage viewers to keep watching.

2. Deliver a Clear Payoff

Every viral video promises something and delivers. Make sure your video builds to a satisfying reveal, twist, or punchline. In chat story formats, this could be a shocking message or unexpected turn in the conversation. Plan your payoff before you start filming or editing.

3. Use Native Vertical Format and Captions

Always shoot or edit in 9:16 vertical format for TikTok.
Add captions so viewers can follow along with or without sound. Vidulk automatically adds captions to chat story and AI-generated clip videos.
Keep text large and clear for mobile screens.

4. Tap Into Trends and Sounds

Browse TikTok's "For You" page and sounds library to spot trending music, effects, or challenges. Incorporate these into your videos where it fits your content. Even story-based or faceless formats can use trending sounds as background or punchlines.

5. Consistent Posting and Watch-Time

Post regularly - at least a few times per week.
Focus on maximizing watch-time and rewatches. Keep videos concise (10-30 seconds) and loopable.
Experiment with different ideas and formats. Faceless story and chat formats, easily created with Vidulk, are proven to perform well and encourage viewers to watch until the end.

Make it in minutes - Vidulk turns a script or a long video into a ready-to-post short, free to start.

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FAQ

What makes a TikTok video go viral?

A strong hook, clear payoff, vertical format, captions, trending sounds, and high watch-time are key factors in viral TikTok videos.

How important are captions on TikTok?

Captions are very important. They help viewers follow your story without sound and boost engagement, which can increase your video's reach.

Can I go viral on TikTok without showing my face?

Yes. Faceless formats like chat stories and text-message videos, which you can make in Vidulk, often go viral and are ideal for creators who prefer privacy.

How often should I post to increase my chances of going viral?

Posting several times per week increases your chances. Consistency helps you learn what works and keeps your content in front of more viewers.

What is Vidulk and how does it help with viral videos?

Vidulk is an app for creating fake chat/text-message story videos and turning long videos into short, shareable clips for TikTok, YouTube Shorts, and Reels.