[AG-TECH] Release of AGVCR - recording AG sessions

dcpiper at indiana.edu dcpiper at indiana.edu
Wed Nov 9 19:07:17 CST 2005

Hi Zsolt,

Yea, that's one thing noted in the 'known issues', the problem with recording
from unicast. I'm glad to hear AGConnector helped, I like that program. There's
some old code in there that I wrote for trying to send data to QuickBridge
(since it seems to need to receive something in order to send data back to you)
but I never did get it working to any satisfaction.

Since I'm replying to all I was aware (as is typical after announcing something
works) that under Windows now it appears to have problems with reading or
displaying the file length, something for me to look at tomorrow.

Growing pains I think, I've been rewriting a lot of it (under Linux for the most
part) in the last few weeks as I've considered more things that I wanted to add,
and lo today I 'got the nod' to release it. So I thought I'd let everyone take a
look instead of me sitting on it a moment longer. This may be good and bad, but
as long as everyone treats it as 'alpha' for now until more testing is done then
I think we'll all be good. I do not think the file format will need to change,
given all that I have in my 'future plans', so any recordings made now will work
in later versions. If for some reason it does, I will make available the
converter program I have used to convert previous recordings to the new format.

Thanks for trying it out, incidentally, what version did you use, Windows or Linux?


Quoting "Nagykaldi, Zsolt F. (HSC)" <Zsolt-Nagykaldi at ouhsc.edu>:

> Fantastic Derek, thanks! One thing. In bridged unicast the recorder can not
> establish connection with the IPs and ports listed. However, in multicast
> (even with the AG Connector) it rocks!
> Zsolt 
> _ _ _
> Zsolt Nagykaldi, PhD
> Research Associate, Clinical IT Specialist
> University Of Oklahoma Health Sciences Center
> Department Of Family And Preventive Medicine
> Oklahoma Center For Family Medicine Research
> 900 NE 10th Street
> Oklahoma City, OK 73104
> Phone: (405) 271-8000 Ext.:1-32212
> Fax:     (405) 271-1682
> ________________________________
> From: owner-ag-tech at mcs.anl.gov on behalf of Derek Piper
> Sent: Wed 11/9/2005 2:57 PM
> To: Access Grid Technical mailing list
> Subject: [AG-TECH] Release of AGVCR - recording AG sessions
>         Hi all,
>         I'm happy to announce that finally I've been given the go-ahead to
> release AGVCR to the community. It was a program I started writing
> around January and it was ready for release in a workable incarnation
> some time in June. However, due to possible 'intellecual property'
> concerns from 'those that deal with those things' at IU, I was unable to
> release it back then. I declined to mention it to the community at large
> until this release so as not to 'tease' people with a product they could
> not get. I won't get into griping about that on this list :> Some of you
> have known about this program earlier since we have had AccessGrid
> meetings that I have recorded. For those parties concerned, we can
> communicate off-list on the best way to get the recordings to you.
>         AGVCR is a program to record and play back the RTP/RTCP stream that
> an
> AccessGrid conference uses. The amount of data it gathers is certainly
> non-trivial, a few hours of recording with a number of participants can
> easily reach a few gigabytes in size. Timing and minimal overhead
> information is embedded in the file for accurate playback.
>         The website for the project is here:
>         http://iri.informatics.indiana.edu/~dcpiper/agvcr/
>         I invite anyone interested to take a look, download and use it to
> see
> what you think. I welcome feedback, please bear in mind though that it
> is still being actively worked on. A number of changes have been made of
> late, so testing has not been as extensive as it probably should  be,
> but that's another reason to get it out there. The website has  source
> for Linux/Unix and a precompiled binary for Windows. I may add
> pre-compiled binaries for popular Linuxes if there is interest.
>         Thanks,
>         Derek
> --
> Derek Piper - dcpiper at indiana.edu - (812) 856 0111
> IRI 323, School of Informatics
> Indiana University, Bloomington, Indiana

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