Exfo EXpert IPTV Test Tools (FTB-1 / 2 Pro) Uživatelský manuál stáhnout pdf (Strana 65)

A.3 IPTV Protocols

• IPTV uses a multilayer protocol stack to deliver the media contents.

• The first 3 layers are typical for IPTV transmission.

• The UDP/RTP session layer is responsible for transferring packets between the

sender and the receiver.

• The MPEG-TS transport stream layer combines multiple media streams ( video, audio,

data) into a single program transport stream.

• The PES layer assigns video and audio to specific packet streams.

• The application layer performs encoding and decoding of the video and audio using

MPEG-2, MPEG-4, VC-1 or other formats.

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Exfo EXpert IPTV Test Tools (FTB-1 / 2 Pro) Uživatelský manuál Strana 65