threefive

threefive is a fast, complete SCTE-35 library and command-line tool: it decodes and encodes SCTE-35 from base64, hex, bytes, integers, XML, JSON, MPEG-TS, HLS and DASH, and can inject cues into a stream. x9k3 is a companion HLS segmenter that splits an MPEG-TS input at SCTE-35 splice points and writes SCTE-35 HLS tags, so you can prepare ad-insertable HLS from the command line. FFmpeg is bundled for generating and inspecting test media.

Key features

• SCTE-35 parse, encode and inject across base64, hex, int, bytes, XML, XMLbin, JSON, MPEG-TS, HLS and DASH
• Read cues from files, stdin, HTTP(S), UDP, multicast and SRT
• x9k3 HLS segmenting with SCTE-35 splice-point awareness and sidecar cue injection
• Importable Python library for building your own SCTE-35 workflows

Use cases

• Broadcast and OTT engineers validating or crafting SCTE-35 ad markers
• Building HLS ad-insertion pipelines and QA tooling
• Learning and debugging the SCTE-35 wire format

This is a headless appliance: threefive and x9k3 are on the PATH and you drive them over SSH. A small landing page on the management port documents the exact commands and links to a bundled sample, and reports a first-boot self-check so you can confirm the toolkit is healthy at a glance.