Performing Arts Advisory

["Feghali, Jose" <>]

Jimmy,

 

Downloaded and installed AG 3.1. Does one have to do anything special to enable H.264? I do not see that as a choice in VIC’s codec menu.

 

Thanks,

 

José

 

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From: Jimmy Miklavcic [mailto:]
Sent: Saturday, March 08, 2008 1:44 PM
To: Feghali, Jose; Petr Holub;
Cc:
Subject: RE: ConferenceXP update

 

VIC from the SUMOVER project now has MPEG-4 and H.264 codecs generating 1.5 - 2.0 mbs streams at SD quality. I haven't tried an HDV camera yet. There was a new version of the Ultra Grid announced a couple of weeks ago.

 

SUMOVER, now AVATS - http://www.cs.ucl.ac.uk/research/sumover/

 

Ultra Grid - http://ultragrid.east.isi.edu/ or https://www.sitola.cz/igrid/index.php/UltraGrid

 

 -- 
Jimmy Miklavcic
Multimedia Specialist


UNIVERSITY OF UTAH
CTR FOR HIGH PERFORM COMPUTING
155 SOUTH 1452 EAST RM 405
SALT LAKE CITY, UT 84112-0190

Office: 801.585.9335
 Fax: 801.585.5366

http://www.anotherlanguage.org

 

 

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From: Feghali, Jose [mailto:]
Sent: Saturday, March 08, 2008 11:20 AM
To: Petr Holub;
Cc:
Subject: RE: ConferenceXP update

I tried RAT a while back and couldn’t get it to work right uncompressed.

 

Do you know what is the max resolution that VIC supports? Is there a FAQ that you know of that explains how to setup RAT and VIC for IP-to-IP conferencing?

 

Thanks,

 

José

 

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From: Petr Holub [mailto:]
Sent: Saturday, March 08, 2008 12:14 PM
To: Feghali, Jose;
Cc:
Subject: RE: ConferenceXP update

 

RAT from MBone Tools (or AccessGrid) can do also uncompressed audio at this level.

 

Petr

 

================================================================

                            Petr Holub

CESNET z.s.p.o.                       Supercomputing Center Brno

Zikova 4                             Institute of Compt. Science

162 00 Praha 6, CZ                            Masaryk University

Czech Republic                     Botanicka 68a, 60200 Brno, CZ

e-mail:                phone: +420-549493944

                                             fax: +420-541212747

                                       e-mail:

 

From: Feghali, Jose [mailto:]
Sent: Saturday, March 08, 2008 6:28 PM
To:
Cc:
Subject: ConferenceXP update

 

Colleagues,

 

We have know successfully tested ConferenceXP with uncompressed stereo audio (16/44.1 and 16/48) using both compressed and uncompressed video. The latency with all uncompressed appears to be lower than DVTS, but there is some question as to the video quality. One of the testing sites reported the video being slightly less sharp with ConfXP using an HDV camera. It appears that an optimum bandwidth with compressed video/uncompressed audio is in the order of around 2.5 to 3.5 Mbps, but we have gotten good results down to around 2 Mbps.

 

If there are any other performing arts institutions or others that would like to test ConfXP in full uncompressed audio with or without compressed video, please get in touch with me off-list at (j DOT Feghali AT tcu DOT edu).

 

If anyone here knows of any other conferencing solution currently available that allows for full, 44.1/48 KHz uncompressed audio to be paired with compressed video I would appreciate the input.

 

José Feghali

Artist-in-Residence

Coordinator of Internet Technologies

TCU School of Music