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 Turn Twitch Streams or VODs into TikTok Clips

To convert a Twitch stream or VOD into TikTok clips, you need to extract highlights, reformat to vertical (9:16), and add captions. Vidulk’s AI clipper automates this process.

Twitch Stream / VOD to TikTok Clips: How to Convert & Automate

Step 1: Get Your Twitch VOD or Stream Recording

First, download your Twitch VOD from your channel dashboard, or record your stream locally using OBS. Twitch’s built-in clips are limited to 5-60 seconds and remain in landscape (16:9), so you’ll need the full video file for flexible editing and reframing.

Step 2: Understand TikTok Video Specs

Recommended aspect ratio: 9:16 (vertical)
Standard resolution: 1080x1920 px
Accepted lengths: Up to 60 minutes per video (as of mid-2024; availability may vary)
Other ratios (1:1, 16:9) are allowed, but 9:16 fills the screen best
Captions: TikTok offers built-in auto captions (toggle on the edit screen)

Step 3: Clip and Reframe for Vertical

For TikTok, vertical video is essential. The most effective format for gaming clips is a split view: face-cam on one part of the vertical frame, gameplay on the other. This requires cropping and stacking the relevant portions of your 16:9 stream.

Step 4: Automate with Vidulk’s AI Clipper

Open the Vidulk app (iOS or Android)
Paste your Twitch VOD or stream recording
The AI automatically finds highlight moments and converts them into short, vertical (9:16) clips, with face-cam and gameplay split if detected
Captions are auto-generated and burned in for accessibility
Export your clips, ready for TikTok upload

Step 5: Upload to TikTok

Transfer the exported clips to your device if needed. Use TikTok’s upload tool, select your 9:16 video, and review the auto captions (edit as needed). Add a description, hashtags, and post.

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 download my Twitch VOD?

Go to your Twitch Creator Dashboard, select Content > Video Producer, then download the desired VOD from your list.

Does TikTok require 9:16 videos?

No, TikTok accepts 1:1 and 16:9 videos, but 9:16 vertical is recommended for best in-feed appearance.

Can Vidulk split face-cam and gameplay for vertical clips?

Yes, Vidulk’s AI detects and stacks face-cam and gameplay areas to create engaging vertical clips.

Are captions required for TikTok videos?

Captions are not required but are recommended for accessibility. TikTok provides auto captions, and Vidulk can burn in captions on export.

Is Vidulk free to use?

Vidulk offers free usage to start, with AI clipping and export features available on iOS and Android.