WebCodecs

WebCodecs is a set of JavaScript APIs that provide low-level access to audio and video codecs. This allows web applications to encode, decode, and manipulate media streams directly within the browser. Previously, web developers relied on server-side processing or less efficient JavaScript-based libraries for such tasks. The WebCodecs API aims to bridge this gap by offering native, hardware-accelerated media processing capabilities.

The API is designed with performance and flexibility in mind. It exposes individual components of the media pipeline, such as encoders, decoders, and muxers/demuxers. This granular control enables developers to build sophisticated media applications without requiring users to download and install plugins or separate software. Use cases include real-time video conferencing, live streaming, advanced video editing in the browser, and media format conversion.

Key components of the WebCodecs API include AudioEncoder, AudioDecoder, VideoEncoder, and VideoDecoder. These interfaces handle the core encoding and decoding of audio and video data, respectively. Additionally, the API provides control over codec configuration, bitrates, and other crucial parameters. The WebCodecs API is an evolving standard, with ongoing development and standardization efforts to expand its capabilities and ensure broad browser compatibility. It represents a significant step towards enabling richer and more powerful media experiences on the web.