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 Twitch Streams or VODs into X (Twitter) Clips

To post your Twitch stream or VOD as a vertical, captioned clip on X (Twitter), you need to reformat, trim, and size it to fit X's specs. Vidulk’s AI clipper can automate much of this process.

Twitch Stream / VOD to X (Twitter) Clips: Vertical

Step 1: Get Your Twitch VOD or Stream Recording

First, download your Twitch VOD from your Creator Dashboard or record your stream locally using OBS. Make sure you have the full broadcast-quality file for best results.

Step 2: Understand X (Twitter) Video Specs

Length: Non-Premium: up to 2:20 (140 s). Premium: up to 2 hours (1080p), up to 4 hours (720p).
Aspect Ratio: 16:9 (landscape or portrait), 1:1. Accepted range: 1:3 to 3:1.
Resolution: Recommended 1280x720 (landscape), 720x1280 (portrait), 720x720 (square).
Captions: X supports attached SRT subtitle files on web uploads.

Step 3: Clip and Reframe for Vertical or Square

Since Twitch VODs are 16:9 landscape, you’ll need to crop or reframe for vertical (9:16) or square (1:1) formats. A common approach is to split the frame: put your face-cam on top and gameplay below. This format works well for short, engaging clips on X.

Step 4: Automate with Vidulk's AI Clipper

Vidulk’s AI clipper (iOS and Android) lets you paste your Twitch VOD or stream recording. The AI automatically finds the most exciting moments, reframes them for vertical, adds captions, and lets you export short clips sized for X. You can then upload these directly to X (Twitter) from your device.

Step 5: Add Captions and Export Correctly

Vidulk auto-generates captions burned into the video, which helps with engagement on X. If you prefer separate captions, you can attach an SRT file when uploading on X’s web interface. Export your clip in 720x1280 (vertical), 1280x720 (landscape), or 720x720 (square) for optimal quality.

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 Twitch VOD?

Go to your Twitch Creator Dashboard, find the VOD in the Content section, and click Download. Alternatively, record your stream locally with OBS.

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

X supports 16:9 (landscape or portrait) and 1:1 (square). For vertical clips, use 9:16 (720x1280).

Does Vidulk add captions to my Twitch clips?

Yes, Vidulk’s AI clipper automatically adds captions burned into the exported video, which is ideal for X.

How long can my Twitch clip be on X (Twitter)?

Non-Premium users can upload up to 2:20 (140 seconds). Premium users can upload up to 2 hours (1080p) or 4 hours (720p).

Can I upload vertical videos to X (Twitter)?

Yes, X accepts vertical (9:16) videos. Use 720x1280 resolution for best results.