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 Add WhatsApp Notification & Typing Sounds to a Fake Chat Video

Make your fake WhatsApp chat videos ultra-realistic by adding authentic notification and typing sounds. Vidulk’s free online tool does it for you - no app or signup needed.

Start from a template

All templates →

Fake Chat Video Generator

Build a realistic conversation, then download it as a video (with typing + sounds) or a screenshot. Free, in your browser — nothing is uploaded.

Platform

Contact nameStatus lineChat timestampAvatar (optional)

Dark modeRead receipt (✓✓)

Messages

You up? I have to tell you something 😳
It's 2am… this better be good
You will NOT believe what just happened

9:41

Alex

online

Today 2:02 PM

You up? I have to tell you something 😳

It's 2am… this better be good

You will NOT believe what just happened

vidulk.com

Message

Video pacing

Remove the watermark

Made by Vidulk — the AI app that turns long videos into viral clips.

How to Add WhatsApp Notification & Typing Sounds to a Fake Chat Video

1. Set Up Your WhatsApp-Style Fake Chat

Go to the WhatsApp fake chat generator embedded below.
Enter your conversation: use green bubbles for sent, grey for received.
Add timestamps, single/double ticks, and set the contact’s name and status (like 'online' or 'last seen').
Preview the chat to make sure it matches WhatsApp’s look: doodle background, typing indicator, and all message details.

2. Control Typing Indicator and Message Timing

For realism, use the typing indicator to show when a reply is coming.
Adjust the speed slider to control how long the typing indicator is visible before the message appears.
This pause mimics real WhatsApp behavior - perfect for story-time and group chat drama videos.

3. Export With Built-In WhatsApp Sound Effects

When you export as MP4, the video includes authentic WhatsApp-style sounds: 'whoosh' for sent messages and 'ding' for received ones.
The timing of these sounds syncs with the message bubbles and typing indicator, so your video feels real.
No editor needed - Vidulk adds the sounds automatically for you.

4. Customize or Overlay Your Own Sounds (Optional)

If you want to use your own sound effects, export the video and mute the built-in audio in your editing software.
Add your preferred notification, send, or typing sounds as overlays.
This is useful if you want to layer in additional effects or match a specific sound style.

5. Download and Share

Export your fake WhatsApp chat video as MP4 or take a PNG screenshot.
Share on TikTok, YouTube Shorts, or Reels for entertainment, skits, memes, and mockups.
Remember: never use fake chat videos to impersonate real people or deceive others.

Make it now - the free generator is on this page, preset to this platform. Export as video or screenshot.

Try Vidulk

FAQ

Does Vidulk add real WhatsApp notification sounds to fake chat videos?

Yes, the generator automatically includes authentic send and receive sounds plus typing pauses in exported MP4 videos.

Can I control how long the typing indicator shows?

Yes. Use the speed slider to adjust the typing pause before each message appears, for natural timing.

How do I use my own sound effects?

Export the video, mute the built-in audio in your editor, and overlay your preferred WhatsApp sounds as needed.

Is the fake chat generator free to use?

Yes, Vidulk’s fake WhatsApp chat generator is free, with a small watermark that can be removed with a one-time code.

What can I use fake WhatsApp chat videos for?

They’re great for entertainment, skits, memes, group chat stories, and mockups - not for impersonation or deception.