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 Zoom Recordings into LinkedIn Clips

To create LinkedIn-ready vertical clips from a Zoom recording, use Vidulk’s AI clipper to find the best moments, crop to vertical, and export with captions - all sized to LinkedIn’s specs.

Zoom Recording to LinkedIn Clips: Auto Vertical Clips

Step 1: Prepare Your Zoom Recording

Export your Zoom meeting, webinar, or interview as a video file. Use either cloud or local recording. Speaker view (16:9) is recommended, as it keeps the focus on the active speaker. Before sharing, ensure you have consent from all participants to use the video for social media.

Step 2: Upload to Vidulk's AI Clipper

Download the Vidulk app for iOS or Android.
Open the app and upload your Zoom video file.
The AI will automatically analyze the recording and select the most engaging moments suitable for short clips.

Step 3: Convert to Vertical, Captioned Clips for LinkedIn

Choose the vertical (9:16) or square (1:1) format - both accepted by LinkedIn.
Vidulk crops to the active speaker, optimizing for vertical format.
Set your desired clip length (LinkedIn allows up to 15 minutes, but short clips often perform best).
Vidulk generates auto-captions burned into the video, ensuring accessibility even before LinkedIn’s own auto-captioning is applied.

Step 4: Export and Upload to LinkedIn

Export your finished clip in 1080x1920 (vertical) or 1080x1080 (square) resolution - both within LinkedIn’s accepted range.
Transfer the exported MP4 to your computer or mobile device.
Upload to LinkedIn. During upload, you can also toggle LinkedIn’s auto-captions for additional accessibility.

Tips for Best Results

Keep clips concise and focused on a single idea or answer.
Review captions for accuracy before posting.
Always respect privacy and secure permissions from all speakers.

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 crop a Zoom recording to vertical for LinkedIn?

Use Vidulk’s AI clipper to crop the active speaker from a 16:9 Zoom video into a vertical (9:16) or square (1:1) format accepted by LinkedIn.

What is the maximum video length for LinkedIn clips?

LinkedIn accepts videos up to 15 minutes in length, regardless of upload method, as of August 2026.

Can I add captions to my LinkedIn video clips?

Yes. Vidulk can burn captions into your clips, and LinkedIn also offers auto-captioning during upload.

Do I need participant consent to share Zoom recordings?

Yes. Always obtain consent from everyone visible or audible in the recording before posting clips to LinkedIn.

Which video resolutions and aspect ratios does LinkedIn support?

LinkedIn accepts resolutions from 256x144 up to 4096x2304 and aspect ratios from 1:2.4 to 2.4:1, including vertical (9:16), square (1:1), and landscape.