[AG-TECH] Release of AGVCR - recording AG sessions
monika.k.rabarison at ccaix.jsums.edu
monika.k.rabarison at ccaix.jsums.edu
Thu Nov 10 14:37:43 CST 2005
Thanks Zsolt. Your trick works for me too when I start agvcr
from the command line. I still need to figure out why rat
and vic don't start when I run agvcr from the icon. I tried
with rat and vic in same dir as agvcr, then with rat and vic
in the path.
Derek, this is great application!
Cheers,
Monika
>
> A simple trick I used was to play back vic and rat streams
> on "localhost" after you start vic and rat manually, with
> the same audio and video ports. E.g. you start rat --
> assuming rat is added to your PATH variable -- (rat.exe
> 127.0.0.1/32210) and vic (vic.exe 127.0.0.1/32214). Using
> "localhost" and the same UDP ports in the player you can
> play your recorded session on your computer.
>
> 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: Derek Piper [mailto:dcpiper at indiana.edu]
> Sent: Thu 11/10/2005 11:25 AM
> To: Wachtel, Robert L
> Cc: monika.k.rabarison at ccaix.jsums.edu; Nagykaldi, Zsolt
> F. (HSC); Access Grid Technical mailing list Subject: Re:
> [AG-TECH] Release of AGVCR - recording AG sessions
>
>
>
>
> Hi,
>
> Yes, I should probably note that problem in the
> 'known issues' stuff. Problem is I wrote a lot of this
> code a few months ago and only just recently did the
> website, so in testing with all of you fine folks I'm
> saying 'oh yea!' and trying to catch up on the
> documentation ... oops :)
> Now, you *should* be able to immediately play back
> to the same venue you recorded from, while the AGtk VIC
> and RAT are running. This is true when AGVCR is running
> from Linux. It allows this because AGVCR is altering the
> SSRCs in every packet sent out on playback, thus since it
> appears to VIC and RAT as if new sources have 'appeared',
> then all works as it should. Under Windows I found that if
> I enabled this 'packet munging' for audio streams then it
> resulted in no audio being played at all - regardless of
> venue, whereas under Linux it worked fine. I will
> reinvestigate this but under Windows builds it's disabled
> for audio streams since the behavior was deemed
> 'unreliable', and I wanted to be sure that in both builds
> the stream output worked for most cases where a recording
> is played back at a different time from the original.
> In your test here, it would work in the same venue
> if participants reloaded the venue, since then VIC and RAT
> would choose new SSRCs for their packets and everyone
> would be happy. The garbled audio in this case is from
> more than one source having the same SSRC, which is
> against the spec, i.e. bad.
>
> Derek
>
> Wachtel, Robert L wrote:
> > I just completed a test session with the folks at ANL.
> > Recording worked well. Playback did not do so well until
> > I switched venues from the one in which I made the
> > original recording. Playback then worked well. Just as
> with recording playback does require you to have a
> > multicast session active and join into the multicast
> > group with the configuration in AGVCR.
> >
> > Playback while still in the original venue caused broken
> > audio from the other remote sites and I could not hear
> > any of the playback audio though I could see the video
> playback as well as the continuing live video. >
> > This is on a Windows XP Pro SP2 in multicast.
> >
> > Bob W.
> > 243-2857
> >
> > -----Original Message-----
> > From: owner-ag-tech at mcs.anl.gov
> > [mailto:owner-ag-tech at mcs.anl.gov] On Behalf Of
> > monika.k.rabarison at ccaix.jsums.edu Sent: Thursday,
> > November 10, 2005 9:42 AM To: Nagykaldi,Zsolt F. (HSC);
> > dcpiper at indiana.edu Cc: Access Grid Technical mailing
> > list Subject: RE: [AG-TECH] Release of AGVCR - recording
> AG sessions >
> > Also, when I start agvcr from the command line and play
> > back the recorded file, vic and rat start but showing
> > the current video and audio in the venue, instead of the
> recorded ones. >
> >
> >>Hi All,
> >>
> >>I am currently trying it on XP Pro SP2 with multicast.
> >>Recording seems to work fine (the file got some size).
> >>When playing back, I don't see vic and rat starting.
> >>
> >>I am not sure what I am doing wrong. Attached is a
> >>snaphot. Note the "File Offset: .....out of 0 bytes"
> ???? >>
> >>TIA
> >>Monika
> >>
> >>
> >>
> >>>
> >>>Win XP Pro SP2. Works like a charm in multicast.
> >>>
> >>>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: dcpiper at indiana.edu [mailto:dcpiper at indiana.edu]
> >>>Sent: Wed 11/9/2005 7:07 PM
> >>>To: Nagykaldi, Zsolt F. (HSC)
> >>>Cc: Access Grid Technical mailing list
> >>>Subject: RE: [AG-TECH] Release of AGVCR - recording AG
> >>>sessions
> >>>
> >>>
> >>>
> >>>
> >>>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?
> >>>
> >>>Derek
> >>>
> >>>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
> >>>>
> >>>>
> >>>>
> >>>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>
> >>
> >>[Attachment: agvcr.jpg]
> >
> >
> >
>
> --
> Derek Piper - dcpiper at indiana.edu - (812) 856 0111
> IRI 323, School of Informatics
> Indiana University, Bloomington, Indiana
>
>
>
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