"Can I use" provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers.

November 3, 2025 - The WebCodecs API gives web developers low-level access to the individual frames of a video stream and chunks of audio. It is useful for web applications that require full control over the way media is processed. For example, video or audio editors, and video conferencing.

This is a basic test suite of various web technologies for the When Can I Use website · It is used to quickly test basic support for features in upcoming browsers, rather than any full support of the feature's specification

"Can I use" provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers.

October 6, 2020 - The WebCodecs API landed today in its first stable browser, Chrome 86. WebCodecs is an API that provides efficient, low-level access to built-in (software and hardware) media encoders and decoders. Spec: https://github.com/WICG/web-codec...

WebCodecs API shows a browser compatibility score of 80. This is a collective score out of 100 to represent overall cross browser compatibility support of a web technology.

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January 21, 2026 - Nowhere on the internet is there any list of actual valid strings you can use, let alone which strings are supported on which browsers · So I compiled a dataset of 71M codec string tests, from 220k user sessions, testing 1087 codec strings from an app I manage, built and released the dataset ...

The WebCodecs API allows web applications to encode and decode audio and video.

"Can I use" provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers.

March 10, 2026 - The format and semantics for codec strings are defined by codec registrations listed in the [WEBCODECS-CODEC-REGISTRY]. A compliant implementation MAY support any combination of codec registrations or none at all.

"Can I use" provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers.

We're currently developing a commercial ... added WebCodecs support over the last two years. I've pulled down the latest nightly build and seen the progress here, and it's encouraging. I have one specific question I haven't seen a direct answer to yet though, which relates to HEVC/H.265 support. Over the last 12 months, every other major browser has added pass-through support for hardware H265 decoding, where the platform supports it: https://caniuse.com/?search=h.265 ...

October 17, 2019 - Request for Mozilla Position on an Emerging Web Specification Specification Title: WebCodecs Specification or proposal URL: https://github.com/WICG/web-codecs Caniuse.com URL (optional): N/A Bugzil...

CanIuse · Mozzila MDN Web Docs · Web.Dev · Chrome Platform Status · WebKit Feature Status · Latest Safari version: 26.2 · Fully Supported · WebCodecs API is Fully Supported in Safari. To ensure it works seamlessly on your website or web app, test your site’s URL on Safari using TestMu AI.

WebCodecs is a flexible web API for encoding and decoding audio and video. - w3c/webcodecs

"Can I use" provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers.

So basically webcodecs API is the best thing to happen in video processing, decoding and encoding are the most demanding parts of rendering, honestly there werent any good alternatives at all and If it wasnt for webcodecs api I wouldnt even ...