Free Video Compressor
Video compressor that shrinks MP4, MOV, WebM and MKV right in your browser. Three quality presets, H.264 + AAC output, and your footage never leaves your device.
- FFmpeg.wasm in browser
- H.264 + AAC MP4
- Files never uploaded
Like the result? Get it for your whole portfolio. 20 free credits on signup, no card.
- stock contributors
- 10,000+
- stock contributors
- stock files keyworded
- 1,000,000+
- stock files keyworded
- real buyer searches behind the keywords
- 50M+
- real buyer searches behind the keywords
- per file, title to keywords
- ~1.3s
- per file, title to keywords
Video compressor: this free tool shrinks MP4, MOV, WebM, and MKV file size by re-encoding to efficient H.264 + AAC, so clips upload faster and play everywhere. This tool runs FFmpeg compiled to WebAssembly directly in your browser - videos are never uploaded - with three quality presets (CRF 22 / 26 / 30) to balance size against fidelity. Compressed clips then move into CyberStock for buyer-focused titles, keywords, and agency CSV exports.
H.264 + AACOutputs the most compatible MP4 codec pair for web, social, and every editor.
0 uploadsFFmpeg.wasm encodes on your own CPU - videos never leave your browser.
3 presetsHigh (CRF 22), Balanced (CRF 26), or Smallest (CRF 30) to trade size for quality.
Up to 500 MBCompress files up to 500 MB each free; larger production batches on paid plans.
Grow your stock earnings with metadata built on 50M+ real buyer searches.
The free tool does one job. The full engine writes, scores and uploads metadata for your whole portfolio.
1.3 s per image or video
About 6× faster than keywording by hand, for photos, vectors and footage.
Best Concept Recognition
The AI sees the story in your image, subject, scene and mood, and nails the concept buyers search for.
Selling Score
A 0–100 score shows which files will earn and which will flop, before you upload.
Marketplace-Ready Metadata
Every title, keyword and description matches each agency's exact rules.
CyberPusher Automation
Upload photos and videos to the major agencies with zero manual work.
CyberBatch
Keyword up to 1,000,000 images or videos in one run, 15% cheaper.
Don't take our word for it.
“Illustrations were always buried under generic tags. CyberStock rewrote 2,000 titles and I landed three featured search placements in a week.”
“Drone footage approvals used to take forever. Now metadata is perfect, rejection rate dropped from 40% to 5%, and buyers actually find my clips.”
“Freelance life means time = money. I keyword a whole catalog before lunch, export CSVs, and hand clients proof that their assets will sell.”
“I'm an animator, not a metadata nerd. This tool translates motion clips into what agencies want to see. Reviewers now rubber-stamp my uploads.”
Smaller clips. Now make them sell.
CyberStock writes titles, descriptions and keywords for stock video and uploads the clips to your agencies.
- AI titles, descriptions and keywords for video, ~1.3s per file
- Keywords ranked against 50M+ real buyer searches
- Selling Score 0–100 before you upload
- CyberPusher: one-click upload to 11 agencies
Video compressor FAQ
Is the video compressor really free?
Yes. Compression runs locally with FFmpeg compiled to WebAssembly. Up to 3 videos per session in the free tool.
Are my videos uploaded?
No. Videos never leave your browser. Encoding happens on your CPU using FFmpeg.wasm.
Which formats work?
Input: MP4, MOV, WebM, MKV, AVI. Output: H.264 / AAC in MP4 (the most compatible format for web, social, and editors).
How long does it take?
Single-threaded FFmpeg.wasm runs roughly 0.3-0.7x realtime on a modern laptop. A 30-second 1080p clip typically finishes in 1-2 minutes.
What size limit?
Up to 500 MB per file in the free tool. Logged-in users on paid plans can run larger production batches with server-side encoding.
Which preset should I pick?
High = best fidelity. Balanced = recommended for most uploads. Small = aggressive size reduction for chat/email.