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.

How to Convert a YouTube Video to TikTok Clips

To turn a YouTube video into TikTok-ready clips, you need to extract the best moments, resize to vertical (9:16), and add captions. Vidulk automates this process for you.

YouTube Video to TikTok Clips: How to Convert and Automate

Understanding TikTok Video Requirements

Aspect Ratio: 9:16 vertical is recommended for TikTok. 1:1 and 16:9 are accepted but may not display optimally in-feed.
Resolution: Standard is 1080x1920 pixels. TikTok accepts 360 - 4096 px on each side, but 1080x1920 is the safe default.
Maximum Length: Up to 60 minutes per upload (rollout varies by region and account as of mid-2024).
Captions: TikTok has built-in auto captions, but uploading videos with embedded captions ensures accuracy and accessibility.

How to Use Vidulk for YouTube to TikTok Clips

Get Your Source: Copy the link to your YouTube video (must be your own or have rights to clip).
Open Vidulk: Use the free Vidulk app (iOS or Android).
Paste or Upload: Paste the YouTube link or upload the video file directly in Vidulk.
Let AI Work: Vidulk's AI finds 5 - 15 of the most engaging moments in long videos, podcasts, or vlogs.
Export Clips: The app outputs short, vertical (9:16) clips, each with burned-in captions sized for TikTok.

Tips for Best Results

Always use your own content or videos you have permission to clip.
Review each AI-generated clip for context and accuracy before posting to TikTok.
Consider trimming or adjusting clips in Vidulk if you want to fine-tune the highlights.
Double-check captions for clarity, especially if your video has technical or niche language.

Why Automate with Vidulk?

Saves Time: No manual scrubbing through hours of footage - AI finds the moments worth sharing.
Optimized Output: Every clip is sized and captioned for TikTok’s specs, reducing upload issues.
Multi-Platform Ready: The same clips can be used for YouTube Shorts or Instagram Reels as well.

Vidulk's AI clipper (free to start, iOS + Android) finds the best moments in a long video and exports captioned vertical clips sized for the destination.

Try Vidulk

FAQ

How do I make vertical TikTok clips from a YouTube video?

Use Vidulk: paste your YouTube link or upload the video, and the AI will create short, vertical, captioned clips sized for TikTok.

What is the best aspect ratio and resolution for TikTok videos?

9:16 vertical aspect ratio at 1080x1920 pixels is the recommended and standard format for TikTok in-feed videos.

Can I add captions to my TikTok clips automatically?

Yes. Vidulk exports clips with captions burned in. TikTok also offers built-in auto captions you can enable during upload.

How many clips does Vidulk generate from a long YouTube video?

Typically, Vidulk’s AI finds 5 - 15 highlight moments from longer content like podcasts, interviews, or vlogs.

Is it legal to use any YouTube video for TikTok clips?

Only use your own videos or content you have permission to repurpose. Respect copyright and platform rules.