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.

LinkedIn (Video Suapan Asli, Termasuk Menegak): Spesifikasi Video & Panduan Eksport Terkini

LinkedIn menyokong pelbagai format video dan nisbah aspek untuk video suapan asli, termasuk menegak. Berikut adalah spesifikasi muat naik terkini dan langkah praktikal untuk mengeksport klip yang sesuai.

Spesifikasi Video LinkedIn (Video Suapan Asli, Termasuk

LinkedIn (native feed video, incl. vertical) video specs (as of 2026-08)
Spec	Value
Max length	15 min (LinkedIn Help 'Video sharing troubleshooting', current article states 15 min with no desktop/mobile split); third-party guides still cite 10 min when uploading via the mobile app; separate LinkedIn Page/Career Page tab videos: 10 min
Aspect ratio	Any ratio from 1:2.4 to 2.4:1 accepted (vertical 9:16 & 4:5, square 1:1, landscape 16:9 all within range); LinkedIn's own video-ad specs list 4:5 (1080x1350), 9:16 (1080x1920), 1:1 (up to 1920x1920), 16:9 (1920x1080) with 5% tolerance; vertical uploads may surface in the mobile full-screen vertical video feed/tab
Resolution	Accepted range 256x144 - 4096x2304; 1080x1920 (9:16) / 1080x1350 (4:5) / 1920x1080 (16:9) max per LinkedIn ad specs
Max file size	5 GB (min 75 KB) for native posts; ads: 500 MB
Frame rate	10-60 fps; bit rate 192 kbps - 30 Mbps
Formats / codecs	MP4, MOV, AVI, WEBM, MKV, WMV, VC1, MPEG/MPEG2/MPEG1VIDEO, DVVIDEO, QTRLE, TSCC2 on desktop/iOS/Android (ProRes may upload but will not process). Note: the older Pages/Career Pages tab-video article says AVI, QuickTime and MOV are NOT supported there and lists AAC/ASF/FLV/MP4/MPEG-1/MPEG-4/MKV/WebM/H264/VP8/VP9/WMV2/WMV3
Captions	Auto captions available to all members and Pages (toggle on during upload; may take time to appear after posting; supported languages: English, Spanish, Portuguese, French, German, Italian, Indonesian, Turkish, Arabic, Dutch); captions editable/removable after posting; SRT closed-caption file can be attached when sharing from desktop; viewers can show/hide CC in the full-screen player
Safe zones	LinkedIn Help: keep the top, bottom and side edges free of key elements, text and logos so they aren't overlapped by the LinkedIn UI - no pixel/percent values published

Sources: https://www.linkedin.com/help/linkedin/answer/a548372 · https://www.linkedin.com/help/linkedin/answer/a1311816 · https://www.linkedin.com/help/linkedin/answer/a1327025 · https://www.linkedin.com/help/linkedin/answer/a552177/add-closed-captions-to-videos-on-linkedin?lang=en · https://www.linkedin.com/help/linkedin/answer/a6290168 · https://business.linkedin.com/advertise/ads/sponsored-content/video-ads/specs · https://www.brandwatch.com/blog/linkedin-video-specs/ · https://blog.sendspark.com/linkedin-video-specs. Specs change - verify in the platform's help center before a big upload.

Spesifikasi Video Suapan Asli LinkedIn (2026)

LinkedIn membenarkan muat naik video terus ke suapan, dengan sokongan untuk format menegak, segi empat sama, dan landskap. Rujuk jadual data di halaman untuk maklumat terkini. Perkara utama:

Panjang maksimum: 15 minit (sesetengah muat naik mudah alih mungkin masih terhad kepada 10 minit)
Nisbah aspek: Mana-mana dari 1:2.4 hingga 2.4:1 (menegak 9:16, 4:5, segi empat sama 1:1, landskap 16:9 semua diterima)
Resolusi: Dari 256x144 hingga 4096x2304 (biasa: 1080x1920 untuk menegak, 1920x1080 untuk landskap)
Saiz fail maksimum: 5 GB
Kadar bingkai: 10 hingga 60 fps
Format/kodek: MP4, MOV, AVI, WEBM, MKV, WMV, dan lain-lain (muat naik ProRes tidak akan diproses)
Sari kata: Sari kata automatik boleh dihidupkan; muat naik fail SRT dari desktop; sari kata boleh diedit selepas diposkan

Zon Selamat dan Tindihan Antara Muka

LinkedIn meletakkan elemen antara muka pada tepi video, terutamanya dalam suapan mudah alih dan main balik menegak skrin penuh. Untuk mengelakkan teks penting atau logo tersembunyi, pastikan semua kandungan utama jauh dari tepi atas, bawah, dan sisi. LinkedIn tidak menerbitkan nilai piksel zon selamat yang tepat, jadi margin konservatif disyorkan.

Mengeksport Klip untuk LinkedIn (Menegak & Format Lain)

Untuk hasil terbaik, eksport video anda dalam salah satu nisbah aspek dan resolusi yang disokong. Untuk video menegak, 1080x1920 (9:16) adalah optimum. Sentiasa kodkan dalam MP4 (H.264/AAC) untuk keserasian maksimum. Hadkan video anda kepada 15 minit dan 5 GB. Tetapkan kadar bingkai antara 24 dan 30 fps untuk main balik lancar. Jika menambah sari kata, eksport fail SRT atau gunakan sari kata automatik LinkedIn.

Jika anda perlu membuat klip menegak pendek dengan cepat dari video panjang, aplikasi Vidulk (iOS & Android) menggunakan AI untuk mencari detik terbaik dan mengeksportnya dengan sari kata, bersaiz untuk LinkedIn dan platform lain.

Petua Muat Naik dan Isu Biasa

Di iOS, muat naik akan terhenti jika aplikasi LinkedIn dilatarbelakangkan; pastikan ia dibuka sehingga muat naik selesai.
Video yang disimpan di iCloud tidak boleh dimuat naik terus dari mudah alih - pindahkan ke storan tempatan terlebih dahulu.
Jika video anda ditolak, periksa saiz fail, panjang, dan pematuhan kodek mengikut jadual di atas.
Sari kata automatik LinkedIn mungkin mengambil masa untuk muncul selepas diposkan; anda boleh mengedit atau mengalih keluarnya kemudian.

Perubahan Spesifikasi: Sentiasa Semak Semula

LinkedIn mengemas kini spesifikasi video secara berkala. Sebelum muat naik utama, sahkan keperluan di Pusat Bantuan LinkedIn untuk mengelakkan isu keserasian.

Eksport klip yang sesuai dengan spesifikasi ini secara automatik - Vidulk menyesuaikan ke 9:16, menambah sari kata dan memotong panjang. Mula percuma di iOS dan Android.

Vidulk

Soalan Lazim

Apakah panjang video maksimum untuk muat naik suapan asli LinkedIn?

Panjang maksimum semasa ialah 15 minit untuk muat naik suapan asli, tetapi sesetengah muat naik mudah alih mungkin masih terhad kepada 10 minit.

Nisbah aspek apa yang disokong untuk video suapan LinkedIn?

LinkedIn menerima mana-mana nisbah aspek dari 1:2.4 hingga 2.4:1, termasuk menegak 9:16, 4:5, segi empat sama 1:1, dan landskap 16:9.

Bagaimana saya boleh menambah sari kata pada video LinkedIn?

Anda boleh menghidupkan sari kata automatik semasa muat naik, atau lampirkan fail SRT dari desktop. Sari kata boleh diedit atau dialih keluar selepas diposkan.

Apakah format eksport yang disyorkan untuk video LinkedIn?

Eksport dalam MP4 (H.264/AAC) untuk keserasian maksimum. Kekalkan dalam had yang diterbitkan untuk saiz fail, panjang, dan resolusi.

Bagaimana saya boleh membuat klip menegak untuk LinkedIn?

Gunakan penyunting video untuk mengeksport pada 1080x1920 (9:16), atau cuba pemotong AI aplikasi Vidulk (iOS & Android) untuk menghasilkan klip menegak bersari kata dari video lebih panjang.