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@mcs.anl.gov [mailto:owner-ag-tech@mcs.anl.gov]
On
> Behalf Of monika.k.rabarison@ccaix.jsums.edu
> Sent: Thursday,
November 10, 2005 9:42 AM
> To: Nagykaldi,Zsolt F. (HSC);
dcpiper@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@indiana.edu [mailto:dcpiper@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@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@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@indiana.edu - (812) 856 0111
>>>>IRI 323, School of
Informatics
>>>>Indiana University, Bloomington,
Indiana
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>[Attachment:
agvcr.jpg]
>
>
>
--
Derek Piper -
dcpiper@indiana.edu - (812) 856 0111
IRI 323, School of
Informatics
Indiana University, Bloomington,
Indiana