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FFmpeg WebCLI

Full FFmpeg in Browser, Offline PWA, No Uploads(WASM)

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Built a browser-based FFmpeg editor that runs entirely client-side via WebAssembly. Your files never leave your device -- all processing happens in a Web Worker. Works offline as an installable PWA after first load.

HN · launched Jun 4, 2026 · 86 upvotes (top 10%) · 0 views

Niche: browser-based media editors · 91 launches, 15 in the last 7 days ▼ -6% · Explore this niche →

Category and tags

  • Horizontal
  • Dev tools
  • Prosumer
  • Not AI
  • Hobby / open-source project

Visit website ↗ Source listing ↗

Could you build this?

Yes This is an in-browser PWA wrapping the existing ffmpeg.wasm library inside a Web Worker with a client-side UI.

Discussion

20 comments analyzed.

Competitors mentioned: VirtualDub, easyVMAF, Whisper.cpp, WebLLM

Concerns raised: ~4x slower than native for encoding, No hardware encoding support in WASM, WASM SIMD limited to 128-bit width, UI clarity about data locality needed

Feature requests: WebGPU for compute acceleration, WebCodecs for hardware encoding support, Clearer visual indicator that data stays local

Competitors

Other products that read as similar to this one : 308 launches clear the similarity bar, closest 8 shown.

Attention rank: #22 of 309 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 215 days after the earliest competitor.

The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.