DVB Application-Layer Hybrid FEC Protection

Document Type Replaced Internet-Draft (individual)
Last updated 2008-10-02 (latest revision 2008-07-07)
Replaced by draft-ietf-fecframe-dvb-al-fec
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes the Application-layer Forward Error Correction (FEC) protocol that was developed by the Digital Video Broadcasting (DVB) consortium for the protection of media streams over IP networks. The DVB AL-FEC protocol uses two layers for FEC protection. The first (base) layer is based on the 1-D interleaved parity code. The second (enhancement) layer is based on the Raptor code. Since both of these codes have already been specified in separate documents, the current document does not define the details of these codes but provides the references to the respective specifications. By offering a layered approach, the DVB AL-FEC offers a good protection against both bursty and random packet losses at a cost of decent complexity.


Ali Begen (abegen@cisco.com)
Thomas Stockhammer (stockhammer@digitalfountain.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)