Reading from camera, encoding via webcodecs, and creating a webm file on disk.

Please see https://w3c.github.io/webcodecs/samples/

WebCodecs code samples

November 3, 2025 - WebCodecs API Samples · Real-Time Video Processing with WebCodecs and Streams: Processing Pipelines · Video Frame Processing on the Web – WebAssembly, WebGPU, WebGL, WebCodecs, WebNN, and WebTransport · Was this page helpful to you? Yes · No Learn how to contribute ·

Try out our WebCodecs samples.

1 month ago - Assign encoderConfig.sampleRate to outputConfig.sampleRate. Assign to encoderConfig.numberOfChannels to outputConfig.numberOfChannels. Assign outputConfig.description with a sequence of codec specific bytes as determined by the [[codec implementation]]. The User Agent MUST ensure that the provided description could be used to correctly decode output. NOTE: The codec specific requirements for populating the description are described in the [WEBCODECS-CODEC-REGISTRY].

January 22, 2025 - Send emails to media-dev@chromium.org or send a tweet to @ChromiumDev using the hashtag #WebCodecs and let us know where and how you're using it. Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution ...

WebCodecs will also define mechanisms for importing content from getUserMedia(). A MediaStreamTrackProcessor converts an audio/video MediaStreamTrack into a ReadableStream of AudioFrame/VideoFrame. Please note that the examples outlined below are merely sketches with several methods left unimplemented for brevity. For complete working samples...

This demo decodes all frames from an MP4 file and renders them to a canvas as fast as possible. It uses mp4box.js for demuxing · Note: The WebGPU rendering mode is not yet available in all browsers. As of M108, Chrome requires the --enable-unsafe-webgpu flag

WebCodecs is a flexible web API for encoding and decoding audio and video. - webcodecs/samples/encode-decode-worker at main · w3c/webcodecs

WebCodecs Spec · Video Frame on MDN · WebCodecs Article ·

WebCodecs is a flexible web API for encoding and decoding audio and video. - webcodecs/samples/index.html at main · w3c/webcodecs

3 weeks ago - parseMedia() is able to extract tracks and samples from audio and video in a format that is suitable for usage with WebCodecs APIs.

October 9, 2024 - In this post, we'll break down a practical example of how to use WebCodec API to capture video from a user's camera, encode it in real time using VP8 encoding, and display both the raw video feed and the encoded frames on the screen. This will help you understand not only the fundamentals of the WebCodec API but also how to apply it to real- world scenarios.

May 8, 2024 - The demo does not integrate WebTransportyet. We encourage you to check Bernard Aboba’s WebCodecs/WebTransport sample. Both the sample and approach presented here are limited in that only one stream is used to send/receive encoded frames. Real-life applications would likely be more complex to avoid head-of-line blocking issues.

WebCodecs API demo: Encoding and Decoding · Record

I am currently developing a demo in WebCodecs that covers several key functionalities. It uses getUserMedia and MediaStreamTrackProcessor to capture and process video in real time. Additionally, it...

March 24, 2023 - All this looks really promising, I wouldn't have thought that we could use browsers directly to render videos. Maybe Puppeteer could then stream the content of the page it is rendering, for example a three.js animation · Background: I have been working on a software that creates and streams ...

This talk offers a real time coding demo to familiarize viewers with the core interfaces of WebCodecs. The demo will demux, decode, and render video from an mp4.