(Disclaimer: the author is a regular contributor to the dash.js project) dash.js is an open-source, JavaScript media player library coupled with a few example applications. It relies on the W3C Media Source Extensions (MSE) for adaptive bitrate playback and Encrypted Media Extensions (EME) for protected content support. While dash.js started out as a reference implementation, it is has been adopted by many organizations for use in commercial products. The DASH-IF Interoperability Points specification has achieved relative stability with respect to the base functionality, so the development team is focused on adding features and improving performance to further increase its usefulness to companies producing web media players. One of the benefits of dash.js is in its richness of features. It supports both live and on-demand content, multi-period manifests, and subtitles, to name a few. The player is highly extensible with an adaptive-bitrate rules engine, configurable buffer scheduling, and a metrics reporting system. The example application provided with the library source displays the current buffer levels and current representation index for both audio and video, and it allows the user to manually initiate bitrate changes or let the player rules handle it automatically. Finally, the app contains a buffer level graph, manifest display and debug logging window. CableLabs has been an active contributor to the dash.js project. Much of the EME support in dash.js was designed and implemented by CableLabs to ensure that the application will support the wide variety of API implementations found in production desktop web browsers today. Additionally, CableLabs has created and hosted test content in the dash.js demo application to ensure that others can observe the dash.js EME implementation in action and evaluate support for protected media on their target browsers. Content ProtectionThe
media library contains extensive support for playback of protected content. The EME specification has seen many modifications and updates over the years and browser vendors have selected various points during its development to release their products. In order to support as many of these browsers as possible, dash.js has developed a set of APIs ( An EME demo app is provided with dash.js ( Greg Rutz is a Lead Architect at CableLabs working on several projects related to digital video encoding/transcoding and digital rights management for online video. This post is part of a technical blog series, "Standards-Based, Premium Content for the Modern Web". DescriptionSB Admin 2 is a free, open source, Bootstrap 4 based admin theme perfect for quickly creating dashboards and web applications. It's modern design style with subtle shadows and a card-based layout could be described as flat material, and is inspired by the principles of material design along with a simple, attractive color system. Features
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