EBU-TT-D XSD

Official EBU-TT-D XML Schema, validates against EBU Tech 3380 subtitle standard.

Link

• Visit resource

Related resources

• IMSC HRM Online ValidatorHosted web tool that validates TTML/IMSC subtitle documents against the IMSC Hypothetical Render Model, flagging documents too complex to r…
• ebu2srtSimple converter from EBU-TT-D to SRT subtitle format.
• subtitles (PHP)General-purpose PHP subtitle format converter that enforces SCC line/character limits.
• TTML to WebVTT Mapping (W3C)Official W3C spec repository defining mapping between TTML and WebVTT caption formats.
• hls.js CEA-608 ParserProduction-grade TypeScript CEA-608 caption parser embedded in hls.js, widely deployed.
• FCC Closed Captioning Rules for TelevisionFCC guide to the four 47 CFR §79.1 caption quality standards — accurate, synchronous, complete and properly placed — plus exemptions and co…
• Overview of the Versatile Video Coding (VVC) Standard and its ApplicationsOpen-access record for the IEEE TCSVT overview paper by Bross et al., the de-facto reference text describing VVC's coding tools and applica…
• HDR10+ Official FAQ and Certification OverviewHDR10+ Technologies' official FAQ explaining the SMPTE ST 2094-40 dynamic metadata basis, scope of the system, and the certification/adopte…
• EBU Tech 3373 — HLG UHDTV Colour Bar Test PatternsSpecification and downloadable TIFF/v210 HLG colour bar patterns for validating HDR production pipelines and 2SI signal paths.
• SCTE-35/SCTE-104/SCTE-67 referenceConsolidated reference docs on dynamic ad insertion via SCTE-104/SCTE-35/SCTE-67 across HLS, DASH, Smooth Streaming, and RTMP.
• scte224structsGo structs and utilities modeling SCTE-224 (ESNI) ad-scheduling data, reference implementation from Comcast.
• Android HDR Video Playback (AOSP Platform Docs)AOSP documentation of the platform HDR pipeline: HLG vs PQ handling, mastering display and content light level metadata (mdcv/clli, SmDm/Co…
• APV Codec Specification (IETF, now RFC 9924)IETF document track for the Advanced Professional Video codec, published as RFC 9924 in February 2026.