Overview
ISO/IEC 23008-10:2015 specifies application‑level forward error correction (FEC) codes for use with the AL‑FEC framework of ISO/IEC 23008‑1 (MPEG Media Transport, MMT). The standard defines systematic FEC codes that generate repair symbol blocks from source symbol blocks to enable reliable delivery of multimedia over IP and non‑IP networks that experience packet loss. It standardizes code points, code behavior and key algorithmic building blocks for robust media transport.
Key Topics and Requirements
- Scope: FEC codes designed for MMT AL‑FEC to improve resilience to packet erasures in heterogeneous delivery environments.
- System model: A source symbol block contains K source symbols (size T bytes) and the FEC produces P repair symbols of size T bytes.
- Code types specified (code points):
- 1 - Reed–Solomon (RS) codes
- 2 - Structured Low‑Density Parity‑Check (S‑LDPC) codes
- 3 - RFC 6330 (Raptor/6330) style code
- 4 - RaptorQ Layer‑Aware (RaptorQ LA) code
- 5 - FireFort Low‑Density Generator Matrix (FireFort‑LDGM) codes
- 6 - FEC algorithms from SMPTE 2022‑1
- RS specifics: RS in GF(2^8) with generator matrix G = [I; A], where A is a Cauchy matrix (m = 8 primitive polynomial as per RFC5510).
- S‑LDPC, RaptorQ LA, FireFort‑LDGM: the document includes structured parity/ generator matrix construction, encoding and decoding algorithm requirements, and layer‑aware extensions for layered media.
- Normative references include ISO/IEC 23008‑1, IETF RFCs (5170, 5510, 6330) and SMPTE 2022‑1, ensuring interoperability with existing AL‑FEC and Raptor families.
Practical Applications and Users
- Use cases:
- Live and on‑demand video streaming over lossy networks
- Contribution and distribution in broadcast/IP‑TV systems
- Real‑time audio/video transport for professional media over IP
- Multicast or one‑to‑many delivery where retransmission is impractical
- Who benefits:
- Streaming engineers and system architects designing robust MMT delivery
- Codec and transport implementers integrating AL‑FEC support
- Network equipment vendors and CDN operators seeking packet‑loss resilience
- Broadcast facilities adopting IP workflows and SMPTE‑aligned FEC
Related Standards
- ISO/IEC 23008‑1 (MPEG Media Transport, MMT) - AL‑FEC framework
- IETF RFC 5510 - Reed‑Solomon FEC schemes
- IETF RFC 5170 - LDPC FEC schemes
- IETF RFC 6330 - RaptorQ FEC
- SMPTE 2022‑1 - FEC for real‑time video/audio over IP
Keywords: ISO/IEC 23008‑10:2015, MPEG Media Transport, AL‑FEC, forward error correction, FEC, Reed‑Solomon, LDPC, RaptorQ, LDGM, SMPTE 2022‑1, packet loss, media delivery.
Open preview (PDF)Information technology — High efficiency coding and media delivery in heterogeneous environments — Part 10: MPEG media transport forward error correction (FEC) codes
