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 TikTok LIVE Replays into Instagram Reels Clips

To convert TikTok LIVE replays into short, captioned Instagram Reels clips, use the right specs and an AI clipper like Vidulk to automate the process.

TikTok LIVE to Instagram Reels Clips: How to Convert

1. Download Your TikTok LIVE Replay

Start by downloading your LIVE replay from TikTok’s LIVE center. Log in to your TikTok account, visit the LIVE center, and download the replay file. This gives you a vertical video source, ideal for Reels.

2. Identify Strong Clip Moments

Q&A segments, reactions, and hot takes often make the most engaging short clips.
Look for moments with clear audio and visible reactions.

3. Instagram Reels Specs (2026)

Max length: Up to 20 minutes (as of Nov 2025 update; previously 3 minutes as of Jan 2025).
Aspect ratio: 9:16 (vertical, full screen recommended).
Resolution: 1080x1920 is standard for Reels; 1440x2560 is also accepted for higher quality.
Captions: Instagram supports auto-generated captions using the Captions sticker in the Reels editor.

4. Automate Clipping and Captioning with Vidulk

Vidulk’s AI Clipper (iOS and Android) streamlines this process:

Paste your downloaded TikTok LIVE replay into the app.
The AI scans your video for the best moments - Q&As, reactions, and highlights.
Vidulk exports short, vertical clips sized for Instagram Reels, complete with captions and proper formatting.

This saves time and ensures your clips meet Instagram’s specs without manual editing.

5. Upload and Finalize in Instagram

Upload your Vidulk-generated clips to Instagram Reels.
Use the Captions sticker if you want to add or tweak captions within Instagram.
Check that your video is vertical (9:16) and under the current time limit.

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 download a TikTok LIVE replay?

Go to your TikTok account’s LIVE center, locate the replay, and download the video file directly to your device.

What is the ideal aspect ratio for Instagram Reels clips?

Instagram Reels recommends a 9:16 vertical aspect ratio for full-screen display. Standard resolution is 1080x1920.

Can I add captions to Reels clips automatically?

Yes. Instagram offers auto-generated captions via the Captions sticker in the Reels editor. Vidulk also adds captions in export.

What moments from TikTok LIVE work best as Reels clips?

Q&A sessions, audience reactions, and hot takes are typically the most engaging moments to clip and share.

How does Vidulk automate clip creation?

Paste your TikTok LIVE replay into Vidulk. The AI finds highlight moments and exports vertical, captioned clips sized for Reels.