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 X (Twitter) Clips

To post TikTok LIVE moments as short, vertical clips on X (Twitter), download your LIVE replay and use Vidulk’s AI Clipper to automate finding, sizing, and captioning the best highlights.

TikTok LIVE to X (Twitter) Clips - How to Create & Automate

Step 1: Download Your TikTok LIVE Replay

First, access your TikTok LIVE replay from the LIVE Center in the TikTok app. Download the full video to your device. Look for Q&A, reactions, or standout moments - these make the most engaging clips for X.

Step 2: Understand X (Twitter) Video Specs

Length: Up to 2:20 (140 seconds) for standard users; up to 4 hours for Premium subscribers (with additional resolution limits).
Aspect Ratio: 16:9 (landscape or portrait) or 1:1; accepted range from 1:3 to 3:1.
Resolution: Recommended 1280x720 (landscape), 720x1280 (portrait), or 720x720 (square).
Captions: X supports SRT subtitle files attached to videos via web upload.

Step 3: Use Vidulk’s AI Clipper to Automate the Process

Open the Vidulk app (available for iOS and Android). Paste your downloaded TikTok LIVE replay. Vidulk’s AI scans the video for the most engaging moments, then automatically creates short, vertical clips sized for X’s portrait or square formats. The app generates highly readable captions directly on the video, matching X’s visual standards.

Step 4: Export and Post to X (Twitter)

Export the selected clips from Vidulk at 720x1280 (vertical) or 720x720 (square) to fit X's recommendations.
For captions, Vidulk burns them into the video. If you want separate subtitles, you can generate or export SRT files and upload them on X’s web platform.
Upload your clips directly to X via the app or website. Ensure your video’s length and aspect ratio match your account’s permissions.

Tips for Effective Clips

Keep clips concise and focused on a single moment or reaction.
Double-check captions for accuracy.
Use portrait (vertical) or square formats for maximum compatibility on X mobile feeds.

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 my TikTok LIVE replay?

Go to the LIVE Center in the TikTok app, find your replay, and use the download option to save it to your device.

What’s the best aspect ratio for X (Twitter) clips?

X supports 16:9 (landscape or portrait) and 1:1 (square). For TikTok LIVE replays, 9:16 (vertical) or 1:1 is recommended.

Can I add captions to my X (Twitter) video clips?

Yes. Vidulk adds burned-in captions. X also supports attaching SRT subtitle files to videos on its web platform.

Does Vidulk work with long TikTok LIVE videos?

Yes. Paste the full replay into Vidulk, and the AI Clipper will find and create short, shareable highlight clips.

Are there limits to video length on X (Twitter)?

Standard users can upload clips up to 2:20. Premium/Premium+ users can upload videos up to 4 hours, with additional resolution requirements.