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 a Webinar into LinkedIn Clips (with Vidulk)

To turn a recorded webinar into LinkedIn-ready vertical clips, you need to identify key moments, crop for LinkedIn’s video specs, and add captions. Vidulk’s AI Clipper automates this workflow for free.

Webinar to LinkedIn Clips - How to Turn Webinars into

LinkedIn Video Specs for Clips

Max length: 15 minutes per video
Aspect ratios: Any from 1:2.4 to 2.4:1 (vertical 9:16, 4:5, square 1:1, landscape 16:9 are all accepted)
Resolution: 256x144 up to 4096x2304 (common vertical: 1080x1920, 4:5: 1080x1350)
Captions: Auto-captions can be toggled on during upload, but may take time to appear

What Makes a Good Webinar Clip for LinkedIn?

Sharp tip: Pull out a clear, practical takeaway
Demo moment: Show a quick, visual demonstration or product walkthrough
Q&A answer: Highlight a concise, helpful answer from the Q&A
Visuals: Crop the slide and speaker into a vertical split for mobile viewing

How to Use Vidulk’s AI Clipper for LinkedIn Clips

Open the Vidulk app (iOS or Android)
Paste your recorded webinar video link or upload the file
The AI finds standout moments: tips, demos, answers
Select “LinkedIn” as your export destination
Vidulk crops slides and speaker into vertical split, resizes to 9:16 or 4:5, and adds captions
Export your ready-to-upload LinkedIn clips (MP4)

Posting Your Clips to LinkedIn

Upload the MP4 file to LinkedIn as a post or story
Toggle on auto-captions during upload if desired
Add a clear title and context in your post description
Clips up to 15 minutes are supported (shorter is often better for engagement)

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

What video size and aspect ratio does LinkedIn accept?

LinkedIn accepts any aspect ratio from 1:2.4 to 2.4:1. Vertical (9:16), square (1:1), and landscape (16:9) are all supported. Resolution can range from 256x144 to 4096x2304.

How does Vidulk find the best moments in a webinar?

Vidulk’s AI analyzes the full video to extract key tips, demo highlights, and useful answers, then suggests short, engaging clips for platforms like LinkedIn.

Are captions required for LinkedIn videos?

Captions are not required, but they improve accessibility and engagement. LinkedIn can auto-generate captions, or you can use the captions Vidulk adds during export.

Can I edit the clips Vidulk suggests before posting?

Yes. You can review, trim, or adjust the AI-suggested clips before exporting them for LinkedIn.

Is Vidulk free to use?

Vidulk is free to start, with AI-powered clipping and export features available on iOS and Android. Some advanced or watermark-free options may require a code.