Common Media Library

Description

Developed by the Streaming Video Technology Alliance, the Common Media Library is a JavaScript library aimed at standardizing media playback across different platforms. It provides a consistent API for developers to implement media playback functionalities, ensuring compatibility and reducing fragmentation in the streaming ecosystem.

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Related resources

• SVTA LabsStreaming Video Technology Alliance GitHub org hosting spec implementations (Common Media Library, LiveSim2, Sandbox) under MIT license.
• IMSC 1.2 — TTML Profiles for Internet Media Subtitles and CaptionsLatest stable W3C spec text for IMSC 1.2, the base standard behind most subtitle delivery in streaming.
• Encrypted Media Extensions (EME) — W3C Working DraftOfficial W3C spec for EME, the browser API for DRM-protected playback control (MediaKeys, encryptionScheme detection, getStatusForPolicy).
• OTT Resources: Low-Latency Streaming (curated talk & reading list)Curated list of conference talks (Mile High Video 2019, Streaming Media East 2019) and articles comparing LL-HLS, LHLS, and DASH low-latenc…
• Low Latency Live Streaming Implementation in DASH and HLSAcademic conference paper (Bentaleb et al.) detailing implementation specifics of low-latency live streaming across both DASH and HLS stand…
• MPEG-5 Standards Overview (EVC & LCEVC)Overview of MPEG-5 Part 1 (EVC) and Part 2 (LCEVC) codec standards with links to specifications.
• MPEG Basics (Chiariglione)Explanation of MPEG standardization process and organizational structure by MPEG founder Leonardo Chiariglione.
• Disney Dolby Vision Best Practices Guide v1.3.1Official Disney mastering spec detailing Dolby Vision L0/L1/L2/L5/L6/L8 metadata layers and trim requirements per content type.
• Video Coding Experts Group (VCEG)Overview of ITU-T's Video Coding Experts Group and its joint work with MPEG (JVET) developing codecs beyond VVC.
• Dolby Vision Overview (Technical PDF)Vendor-style technical overview of Dolby Vision mastering workflow covering PQ grading, CMU, and trim metadata.
• AIMS Alliance (Alliance for IP Media Solutions)Industry alliance driving adoption of open IP standards (SMPTE ST 2110, NMOS) for professional media infrastructure interoperability.
• MovieLabs Production Technology SpecificationsConcrete specification documents (Ontology for Media Creation, Media Creation Cloud, security architecture) supporting the 2030 Vision for…
• Dolby.io Media APIs — Developer ToolsOfficial Dolby.io reference documentation for Media APIs developer tooling.
• SMPTE ST 2110 — Professional Media over Managed IP NetworksOfficial SMPTE standard page for ST 2110, the professional media-over-IP suite (2025 Emmy-winning standard with EBU and VSF).
• MovieLabs 2030 VisionMajor studio-backed initiative defining cloud-native, software-defined media production workflows, ontology, and security architecture for…