Video Toolkit — 12 Free AI Video Tools for VN Creators
Trim, compress, convert MP4/MOV/WebM. Extract audio MP3, video → GIF, vertical TikTok/Reels, merge videos. AI auto-caption Vietnamese with Whisper + Claude, write TikTok scripts, generate viral 30s clips, VN karaoke. No watermark, no signup.
Pick a tool
Trim video to exact timestamp. Stream copy, no re-encode, lossless quality.
Convert between MP4/MOV/WebM/AVI/MKV. Toggle high quality or fast.
Extract audio from video to MP3 (128/192/320 kbps), WAV, or AAC.
Compress to target size (5/10/25/50/100MB) with 2-pass H.264 quality.
Convert video to GIF with palettegen optimization. Pick FPS and width.
Convert 16:9 horizontal to 9:16 vertical for TikTok, Reels, Shorts. 2 modes.
Merge multiple videos into 1 file. Drag to reorder, up to 10 files.
Auto-generate SRT/VTT in Vietnamese with Whisper + Claude fixing diacritics, names, slang.
Write TikTok/Reels/Shorts scripts in Vietnamese with AI Claude, 3-second hook + CTA.
Auto-cut 30-60s viral moments from long VN videos (podcast/livestream) with AI scoring.
Generate karaoke video from MP3 + Vietnamese lyrics with synced highlights. Weddings, birthdays.
Translate SRT/VTT between Vietnamese and English with AI Claude. Keeps timestamps.
Why Video Toolkit?
Unlike Veed/Kapwing free tier with watermarks. Download clean original files, no ads embedded.
Whisper + Claude fix VN diacritics. Natural VN TikTok scripts. Viral clip AI with VN-aware hook scoring.
No slow client wasm. Mobile + desktop process quickly, large 500MB files supported.
Uploaded files auto-deleted after 60 minutes. No data retention, never used for AI training.
FAQ
Is there a file size limit?
Maximum 500MB per file. Auto-caption + viral-clip are capped at 60 minutes of video due to self-hosted Whisper CPU.
Are files uploaded to servers?
Yes, we use server FFmpeg for speed. But files auto-delete after 60 minutes and are never used for AI training.
How accurate are AI captions?
Whisper large-v3 reaches ~90-95% accuracy for clear Vietnamese. Claude then fixes diacritics, names, slang for a clean final SRT.
Any watermark on outputs?
None. All tool outputs are 100% clean files, no watermarks, no embedded ads.
Is there an API for integration?
Phase 1 is web UI only. API coming in Phase 2 with rate limits + keys.
Is there a paywall?
Free with 20 jobs/hr/IP rate limit. AI features have a daily budget cap to prevent abuse.