Service Worker Caching, PlaybackRate and Blob URLs for Audio and Video on Chrome for Android
From version 52, Android Chrome uses the same media stack as desktop Chrome, rather than relying on the underlying platform implementation. This enables service worker media caching, variable playback rates, blob URLs on Android, MediaStream passing between APIs, and easier cross-platform debugging.
Media Source API: Automatically Ensure Seamless Playback of Media Segments in Append Order
Record Audio and Video with MediaRecorder
The MediaRecorder API enables you to record audio and video from a web app. It's available now in Firefox and in Chrome for Android and desktop.