IP Video Task Force Report

APPENDIX C: Comparison of Desktop Codecs by Vendor Model


ViGo

Escort/Cruiser

ViaVideo

PICTURETEL

H.320 – ISDN

 

X

 

X

H.323 – IP

X

X

X

X

H.224 - Real time control protocol for simplex application using the H.332 LSD/HSD/MLP channels

X

X

   

H.281 - Far end camera control

X

X

 

X

H.243 - Procedures for establishing communication between three or more audiovisual terminals using digital channels up to 1920 kbps

 

X

 

X

H.261 - Video codec for audiovisual services at p x 64 kpbs

X

X

X

X

H.263 - Video coding for low bit rate communication

X

X

X

X

H.263+

   

X

 

SQCIF (128 x 96 pixels)

       

QCIF (176 x 144 pixels)

X

X

 

X

CIF (352 x 288 pixels) aka FCIF

X

X

X

X

4CIF (704 x 576 pixels)

       

16CIF (1408 x 1152 pixels)

       

G.711 - Pulse code modulation (PCM) of voice frequencies

X

X

X

X

G.722 - 7 kHz audio-coding within 64 kbps

X

X

X

X

G.722.1 - Low complexity coder; it compresses 50Hz - 7kHz audio signals into one of two bit rates, 24 kbit/s or 32 kbit/s

     

X

G.723.1 - Dual rate speech coder for multimedia communications transmitting at 5.3 and 6.3 kbps

X

X

 

X

G.728 - Coding of speech at 16 kbps using low-delay code excited linear prediction

X

X

X

X

Acoustic Echo Cancellation (AEC)

X

X

 

X

 

Appendix C Continued


ViGo

Escort/Cruiser

ViaVideo

PICTURETEL

Automatic Gain Control (AGC)

X

X

 

X

Automatic Noise Suppression (ANS)

X

   

X

T.120 - Data protocols for multimedia conferencing

X

X

 

X

QoS

X

X

X

 

Frames per Second: fps

30

30

30 at 384

30

Windows 95

       

Windows 98

X

X

X

X

Windows NT

 

X

 

X

Windows 2000

X

X

X

X

Windows ME

X

X

 

X

Processor

P II

P

P with MMX

P II

Processor Speed (MHz)

300

200

350

400

Memory (RAM in MB)

64

64

64

128

Video Memory (RAM in MB)

2M VRAM

     

Disk Space (MB)

 

50

20

50

Multicast

 

X

   

Max Lan Speed

1.5 Mbps

1.5 Mbps

 

384 - ISDN 768 - IP

USB or Card (ISA/PCI)

USB

PCI

USB

PCI*

Camera (Manual/ PTZ )

Both

Both

Manual***

Manual

 Horizontal Resolution

330 HTVL

460 TVL

 

310 HTVL

 Tilt Range

 

 +90/-30**

   

 Pan Range

 

+/-100**

   

 Horizontal field of view

 

3-47.5**

   

 View Angle

50 x 39**

   

46**

 Lens Mount

       

 Iris Control

Flickerless

   

Flickerless

 White Balance

Fixed

AUTO

 

Auto

 Built-in Mic

       

 Active Pixels

512H x 492 V

     

 Min Illumination

< 15 Lux

     

 Man Contrast Adjust

     

X

 Privacy Shutter

     

X

 Manual Focus

X

 

X

50 mm to inf.



Appendix C Continued


ViGo

Escort/Cruiser

ViaVideo

PICTURETEL

 Picturetel FlipCam

     

Manual

 Horizontal Resolution

     

330 HTVL

 View Angle

     

68**

 Lens Mount

       

 Iris Control


   

X

 White Balance

       

 Built-in Mic

       

 Active Pixels

       

 Min Illumination

       

 Man Contrast Adjust

       

 Privacy Shutter

     

X

 Manual Focus

     

10" to inf.

 Manual Zoom

     

2.3 x


* One free PCI slot
** Unit in degrees
*** Polycom does not have detailed information