#WebCodecs
webcodecs test

{
"from": "video/mp4",
"to": "video/mp4",
"originalSize": 149648564,
"compressedSize": 67049251,
"savedBytes": 82599313,
"savedPercent": "55.2%",
"elapsedMs": 24560
}
November 27, 2025 at 2:14 PM
The WebCodec APIs could hypothetically allow a ffmpeg.wasm that doesn't suck caniuse.com/webcodecs
WebCodecs API | Can I use... Support tables for HTML5, CSS3, etc
caniuse.com
June 25, 2024 at 5:03 PM
how 2 use webcodecs to convert gif to mp4
October 21, 2024 at 12:55 PM
webcodecs are so unstable outside of chrome omg we can't have shit
September 5, 2024 at 12:56 AM
with webcodecs you could probably have bluesky upload audio as a video in the style of twitter's voice clips
April 20, 2025 at 3:04 AM
wait firefox supports WebCodecs? fire
May 29, 2025 at 6:56 PM
bluesky could really benefit from webcodecs being supported outside chrome i think
June 25, 2024 at 4:12 PM
rather than adding an ffmpeg js dependency to the app it might be better if bluesky just spawns a webview to use webcodecs to convert gif to mp4
October 21, 2024 at 4:46 PM
i think it's crazy we don't have webtransport/webcodecs in react native???
April 17, 2026 at 8:26 PM
I created a new library which polyfills the WebCodecs API in server-side environments such as Node and Bun.

Full bidirectional encoding and decoding support for all codecs in the API, automatically hardware-accelerated, and super fast! Check it out! 🚀

github.com/Vanilagy/web...
GitHub - Vanilagy/webcodecs-polyfill: A polyfill for the WebCodecs API for use in server-side JavaScript environments such as Node, Deno, and Bun.
A polyfill for the WebCodecs API for use in server-side JavaScript environments such as Node, Deno, and Bun. - Vanilagy/webcodecs-polyfill
github.com
December 4, 2025 at 1:39 PM
Managed to compile ffmpeg via GH actions. This means no more woes of compiling on your machine just fork the repo, change the config and compile using github and get the wasm builds.
here is the repo github.com/newbeelearn/...
#buildinpublic
GitHub - newbeelearn/web-demuxer: Demux media files in the browser using WebAssembly, designed for WebCodecs 在浏览器中实现媒体文件的解封装,专为WebCodecs设计
Demux media files in the browser using WebAssembly, designed for WebCodecs 在浏览器中实现媒体文件的解封装,专为WebCodecs设计 - newbeelearn/web-demuxer
github.com
January 10, 2025 at 5:47 AM
For an upcoming talk I needed to visualize how you can use WebAudio to draw shapes on an oscilloscope. So earlier this week I created this animation.

How did I do it... it's build in JS, drawn on a canvas. Then using WebCodecs API encoded to H.264 and exported as an MP4 file. The web is awesome.
March 26, 2026 at 7:07 PM
webcodecs work?
November 27, 2025 at 2:17 PM
10,000 videos processed daily with WebGPU + WebCodecs → goo.gle/4biAsbg

Learn how AI Video Upscaler handles hardware-accelerated processing entirely in the browser with $0 server costs.
March 25, 2026 at 4:00 PM
Video processing in the browser used to be slow or required servers. But the WebCodecs API changes that. In this handbook, Sam teaches you all about codecs, frames, muxing/demuxing, how WebCodecs works, and how to build high-performance video apps.
www.freecodecamp.org/news/the-web...
April 10, 2026 at 8:01 AM
Blink: Intent to Ship: Add support for video frame orientation metadata to WebCodecs
Blink: Intent to Ship: Add support for video frame orientation metadata to WebCodecs
Blink: Intent to Ship: Add support for video frame orientation metadata to WebCodecs
groups.google.com
March 25, 2025 at 4:18 PM
Webcodecs are not the friendliest web api
November 25, 2023 at 10:39 PM
really nice that we have someone dedicated enough to wrap over the webcodecs api loll
August 31, 2025 at 11:28 PM
I've reported 16 Chromium bugs in total by now, kinda wild. Most of those related to WebCodecs!
May 4, 2026 at 12:45 PM
safari is finally adding audio support to webcodecs

webkit.org/blog/16993/n...
June 23, 2025 at 3:46 PM
Essas últimas semanas foram insanas, tipo: no front-end saí do básico do Canvas pra coisas avançadas (atualmente tô testando WebGL), mexi com WebCodecs, encoding, no back-end mexi com bibliotecas nativas do FFmpeg em C++ e construí um wrapper pra .NET. Amando essa loucura kkkkkkk.
February 27, 2025 at 7:32 PM
firefox just got webcodecs support but it's Literally useless (as in the browser either reports formats as unsupported or the TAB CRASHES) if you're doing something slightly more advanced than average
September 5, 2024 at 12:57 AM
yoooo web codecs api shipping to firefox 130
bugzilla.mozilla.org/show_bug.cgi?i…
1908572 - Turn on WebCodecs pref in desktop beta and release
RESOLVED (cchang) in Core - Audio/Video: Web Codecs. Last updated 2024-08-14.
bugzilla.mozilla.org
August 18, 2024 at 11:50 PM
Streaming video to the browser with GStreamer, WebTransport and WebCodecs

New Centricular devlog post by Sanchayan Maity @sanchayan

centricular.com/devlog/2026-...

#gstreamer #webtransport #quic #webcodecs
Streaming video to the browser with GStreamer, WebTransport and WebCodecs · Devlog · Centricular
Getting low-latency video from a media pipeline into a web browser has historically meant reaching for WebRTC. WebRTC works, but it has a lot of pieces: SDP negotiation, ICE connectivity checks, and a...
centricular.com
September 17, 2026 at 8:47 AM
one more year until webcodecs are safe to use in production i guess
a cartoon of tom carrying a red balloon
ALT: a cartoon of tom carrying a red balloon
media.tenor.com
September 5, 2024 at 1:01 AM