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FFmpeg WebCLI

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

Details

External ID
48404224
Source
HN
Company
—
Product
FFmpeg WebCLI
Website domain
github.com
Launched
June 4, 2026
Cohort
—
Upvotes
86
Upvotes percentile
0.9002732240437158
Tags
—
Fetched at
Sept. 7, 2026, 9:26 p.m.
Updated at
Sept. 7, 2026, 9:26 p.m.

Description

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.

Enrichment

Theme
audio and video developer utilities
Vertical
Horizontal
Function
Dev tools
Audience
Developer
AI stance
Not AI
Project type
Hobby / open-source project
Normalized one-liner
ffmpeg video processing in browser
Manually corrected
False

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 — 163 launches clear the similarity bar, closest 8 shown.

Attention rank: #12 of 164 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).

Launched 215 days after the earliest competitor.

Other launches for this product

Same idea, different domain

Nobody's really built a dev tools tool for Sales yet.