DongHoon Yi2005/ 1/ 26

dhyi@netmedia.gist.ac.kr

Networked Media LaboratoryDept. of Information & Communications

Gwang-Ju Institute of Science & Technology

APAN 19th Bangkok Meeting

Sub-Gbps Uncompressed HDTV over IP Trials

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Contents

Uncompressed HD Streaming systemDecompressed-Live HDV (221Mbps) Uncompressed-Stored HDTV (885Mbps)

Compressed HDTV (SMPTE 305M , 270Mbps) StreamingUncompressed HDTV (SMPTE 274M,1.2Gbps) Streaming

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Uncompressed HD streaming system

Packetizer

DePacketizer

Server Client

HD DisplayHDV Cancoder MPEG-2 Decoder & Packetizer

MPEG-2 TSIEEE 1394

RTP/ UDP/ IP

Analog 720/ 30p

Analog 720/ 60p

S-ATA HDD x 8

8-way RAID Controler

RTP/ UDP/ IP

IPv6Gigabit Network

0.9 Gbps

0.2~0.3 Gbps

Uncompressed-Stored HDTV Streaming

ü Resolution: 1280x720 (60fps)ü Platform: Linux (Ultragrid 0.2.1 + file read module)ü Bandwidth : 885Mbps (1280x720x60x16) ü System: S-ATA(10Krpm) 74G , S-ATA 3Ware RAID controller

Decompressed-Live HDV Streaming

ü Resolution: 1280x720 (30fps)ü Platform : Window (DirectShow GraphEdit)ü Bandwidth : 221Mbps (1280x720x30x8)ü System: HDV Camcoder, IEEE1394 cable

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Decompressed-Live HDV (221Mbps)

Goal: Pre-experiments of several hundreds Mbps HDTV streamToo expensive HDTV cameraPre-development of uncompressed HDTV system

Feature1280x720 progressive, 30fps YV12: Planar YUV format, 8-bpp 2x2 U and V planes

UDP Socket TuningBurst sending and then restSender - Non-blocking, Big Sending Buffer

Blocking mode can avoid packet loss in sending buffer Performance is poor (Data loss between sender module and decoder

module) Better performance by Non-blocking mode Avoid packet loss by big sending buffer

Receiver - Blocking, Big Receiving Buffer Non-blocking receiving socket waste computation time to check whether

it receive or not.

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Decompressed-Live HDV (221Mbps)

Implementation (based on Windows DirectX)

ExperimentsKAIST GISTIPv6 VLAN220~270Mbps

IEEE1394Interface

MPEG2-TSDemuxer

MPEG2Decoder

AudioDecoder

RTPPacketizer

RTPPacketizer

RTPDepacketizer

(Video)

RTPDepacketizer

(Audio)

VideoRenderer

AudioRenderer

Implemented

Need Configuration

Not Implemented

ClientServer

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Uncompressed-Stored HDTV (885Mbps)

System Details

Dual Intel Xeon 2.8C

Server Client

Hardware Software

Intel Server Board SE7525GB2

Samsung 1GB Server RAM x 2

WD S-ATA 74G 10Krpm x 8

Intel PWLA8490MT

S-ATA 3ware RAID Escalade 9500s-8, PCI-X

Dual Intel Xeon 2.8C

Intel Server Board SE7525GB2

Samsung 1GB Server RAM x 2

Seagate S-ATA 120G 7200rpm

Intel PWLA8490MT

GeForce 6600 (PCI Express X 16)

CPU

Main Board

Memory

HDD

NIC

Etc

· Based on ultragrid.0.2.1(USU ISI) - Real time 720p streaming system over ipv4/ipv6 - Developed at Linux

· File Streaming module is added

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Uncompressed-Stored HDTV (885Mbps)

H/W IssuesNIC - Different NIC shows different performance

Intel 1Gbps NIC showed the best performance

Disk read up speed Old type of DISK I/O can be bottleneck

LAN cable Cat6 is better than Cat5

S/W IssuesBurst streaming

By giving some delay inter-packet, burst packet sending is fixed.

Other IssuesAcquisition of 720p video file.

Generated by 3D production tool (Alias Maya)

Future works1080i supportsMulti-channel 1080i streaming

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Uncompressed-Stored HDTV (885Mbps)

Demonstration

KOREN Workshop (Dec. 3th 2004)

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Compressed HDTV (SMPTE 305M , 270Mbps) Streaming

Demonstration between Korea and BarcelonaSystem information

ResearchChannel’s S/W Resolution: 1080i Compressed by SONY HDCAM Codec Transport format: SMPTE 305M(SDTI)

Sender Workstation with Gigabit NIC Stored HD file

Receiver Decoder Box SONY HDCAM Decoder, Demultiplexer, D/A Converter Workstation with Gbit NIC, SDTI Interface card(VideoPump) Display device

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Compressed HDTV (SMPTE 305M , 270Mbps) Streaming

International Lightpath provisioning

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Compressed HDTV (SMPTE 305M , 270Mbps) Streaming

System Specifications

Audio AMP, Mixer

Audio D/A Converter

Video D/A ConverterDemuxer, Decoder

Audio Speaker

270Mbps Stream Receiver System

PDP Display

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Uncompressed HDTV (SMPTE 274M,1.2Gbps) Streaming

Developed in GIST

HD Contents SONY HDCAM, SMPTE 274M standard 1920X1080/59.94/I, 1125 lines per frame (Active line 1080 lines)

Server NAS (Storage system), Workstation with GbE.

Client Workstation with GbE. VideoPump, SONY Demultiplexer and D/A Converter, Display device (PDP)

NAS

Stored File

Sender

Reading source file

Packetization

Receiver

Loss Check

Make Frame

Output toVideo Pump

Buffer

Sony Decoder Box

D/ A converterDemuxer

DATA

Feedback

HD SDI

NAS

Stored File

Sender

Reading source fileReading

source file

PacketizationPacketization

Receiver

Loss CheckLoss Check

Make FrameMake Frame

Output toVideo PumpOutput to

Video PumpBufferBuffer

Sony Decoder Box

D/ A converterDemuxer

Sony Decoder Box

D/ A converterDemuxer

DATA

Feedback

HD SDI