EXFO EXpert IPTV Test Tools (FTB-1 / 2 Pro) - Manual (Page 65)

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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.