MPEG-4 Audio/Visual RTP formatI/D Update and Interoperability Test

Toshiba, Matsushita, NEC, Oki, NTT

MPEG Noordwijkerhout IETF Adelaide

MPEG-4 Audio/Visual streams mapped directly on RTP packets

Simple but sufficient loss resiliency byError resiliency of MPEG-4 itselfFragmentation rule

RTP format supports all MPEG-4 natural Audio/Video Profiles

RTCP format supports some Profiles using upstream message (ARTS Profile)

MPEG-4 Audio/Visual RTP format draft-ietf-avt-rtp-mpeg4-es-00.txt

Internet Draft Update

Marker bit (Visual)Random Access Point Last packet in a VOP

Timestamp Resolution (Visual, Audio)Default value: 90KHz

Change related to MPEG-4 Version 2 FPDAM to FDAM (Audio, RTCP)

Other editorial clarifications …

Audio RTP Interoperability Test

By 2 companiesNEC, FhG

MPEG-4 Audio AAC and CELPLATM (Low-overhead MPEG-4 Audio Tra

nsport Multiplex)

Visual RTP Interoperability Test

By 4 companiesMatsushita, NEC, Oki, Toshiba

MPEG-4 Visual Simple and Core Profile3 Steps

Step 1) Video bitstream exchange

Step 2) RTP stream exchange

Step 3) Interoperability test through network

SummaryInternet DraftInteroperability test for

Visual RTP (Section 3) Audio RTP (Section 4)

Liaison Statement from MPEGFurther Work to be done

MIME type registration

RTCP (Section 5)

Updated

SucceedSucceed

in few weeks