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 OBS Recordings into YouTube Shorts Clips

To create YouTube Shorts from OBS recordings, you need to convert your full-quality gameplay or stream footage into short, vertical, captioned clips sized to Shorts specs. Here’s how to do it efficiently and automatically.

OBS Recording to YouTube Shorts Clips: How to Convert

1. Prepare Your OBS Recording

Record your stream, gameplay, or tutorial in OBS using local recording. For best quality, save in MKV or MP4 format. If you recorded in MKV, remux to MP4 before uploading anywhere - MP4 is required for most editing apps and platforms, including YouTube and Vidulk.

In OBS: File > Remux Recordings to convert MKV to MP4.
Keep the original full-quality file for best results in later steps.

2. Understand YouTube Shorts Requirements

Length: Up to 3 minutes (as of August 2026; any video up to 3 minutes uploaded after October 15, 2024, can be a Short).
Aspect Ratio: Vertical (9:16, e.g., 1080x1920) or square (1:1).
Wider videos (16:9) are not classified as Shorts.
Captions: YouTube auto-generates captions if your upload has clear speech in a supported language. You can edit these in YouTube Studio after upload.

3. Clip and Convert Using Vidulk’s AI Clipper

Vidulk’s free AI Clipper app (iOS & Android) streamlines the process:

Upload your OBS MP4 recording to Vidulk.
The AI automatically finds the best moments - highlights, funny reactions, key gameplay, or tutorial steps.
Vidulk exports your clips as vertical (9:16) or square (1:1) videos, sized specifically for YouTube Shorts.
Automatic captions are added to each clip, improving accessibility and engagement.

4. Export and Upload to YouTube Shorts

Download the vertical or square clips from Vidulk to your device.
Upload each clip directly to YouTube from your phone or desktop.
Ensure the video is under 3 minutes and maintains the vertical or square format for correct Shorts classification.
Edit auto-generated captions in YouTube Studio if needed.

5. Tips for Best Results

Keep your OBS recordings high quality for clearer Shorts clips.
Let Vidulk handle resizing and captioning, but check the final export for any needed tweaks.
Use descriptive titles and hashtags on YouTube to maximize Shorts reach.

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 convert an OBS MKV recording to MP4 for YouTube Shorts?

In OBS, use File > Remux Recordings to convert your MKV file to MP4 before uploading or editing.

What aspect ratio do YouTube Shorts require?

YouTube Shorts must be vertical (9:16, 1080x1920) or square (1:1) to be classified as Shorts.

Does Vidulk automatically add captions to my Shorts clips?

Yes, Vidulk's AI Clipper adds auto-captions to your clips for improved accessibility and engagement.

Can I use Vidulk for long OBS recordings?

Yes, Vidulk is designed to process long videos and automatically find the best short moments for Shorts.

Is it free to use Vidulk’s AI Clipper for YouTube Shorts?

Vidulk is free to start, with no cost to try the AI clipper app on iOS and Android.