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 Webinars into Snapchat Spotlight Clips

To turn a recorded webinar into Snapchat Spotlight clips, you need to extract key moments, resize to 9:16 vertical, and add captions. Vidulk's AI clipper streamlines this process for mobile creators.

Webinar to Snapchat Spotlight Clips: How to Create Vertical

1. Understand Snapchat Spotlight Video Requirements

Length: Up to 5 minutes per video
Aspect Ratio: 9:16 vertical required
Resolution: 1080x1920 pixels is widely used
Captions: No SRT upload; captions must be burned-in or added in-app

Ensure your clips follow these specs to maximize visibility and avoid upload issues.

2. Identify the Best Webinar Moments to Clip

Look for the sharpest tip, a standout demo, or a memorable Q&A answer
Focus on concise, self-contained moments that make sense out of context
Crop the view to show both slides and the speaker for a dynamic vertical split

Effective clips are short, engaging, and visually clear, even on mobile screens.

3. Use Vidulk to Automate Clipping, Sizing, and Captioning

Upload or paste your webinar video into Vidulk (iOS or Android)
The AI automatically finds highlight moments based on clarity and engagement
Clips are exported in vertical (9:16) format, sized for Snapchat Spotlight
Captions are auto-generated and burned into the video, meeting Snap’s requirements

Vidulk removes manual editing steps, letting you quickly generate multiple Spotlight-ready clips.

4. Final Steps: Review and Upload to Snapchat Spotlight

Review each clip to ensure the message is clear and captions are accurate
Export and transfer to your device if needed
Upload to Snapchat Spotlight via the app, using in-app Creative Tools for any final tweaks

This workflow lets you consistently repurpose webinar content for new audiences on Snapchat.

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 is the max video length for Snapchat Spotlight clips?

Snapchat Spotlight allows videos up to 5 minutes in length as of August 2026.

How do I add captions to Spotlight videos?

Snapchat does not support SRT uploads for Spotlight. Use Vidulk to burn captions into your clip, or add text with Snapchat's Creative Tools.

Can I upload horizontal webinar videos to Spotlight?

No, Spotlight requires vertical (9:16) videos. Use Vidulk to convert horizontal webinar footage into vertical clips.

What moments from a webinar work best for short clips?

Sharp tips, live demos, and clear Q&A answers make for strong, engaging short clips.

Is Vidulk available for both iOS and Android?

Yes, Vidulk's AI clipper app is available on both iOS and Android devices.