problem in freezing videos

[alex fergosen]

hi my freind
today i have test the bbb on the server with this configuration :
Architecture:          i686   >> i have install 64bit iso but it is i686? any idea?
CPU op-mode(s):        32-bit, 64-bit
CPU(s):                4
Thread(s) per core:    1
Core(s) per socket:    2
CPU socket(s):         2
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 15
Stepping:              6
CPU MHz:               2666.329
Virtualization:        VT-x
L1d cache:             32K
L1i cache:             32K
L2 cache:              4096K

i have test it in LAN ,when 10 person share therir camera , more than this number it freezes the videos and suddenly kick out some users,
the network foundemental is ok , there is not any problem with it , is server in normal mode for bbb ?
any experince will appriciate

[Fred Dixon]

Hi Alex,

We'd like to reproduce the problem.  

Can you post the output of

  

   sudo bbb-conf --check

How long do you share webcams before the video freezes or users are disconnected?  Is the problem repeatable?  If so, can you give us the steps to repeat ... which might just be connect with 10 users, but it will be easier for us to duplicate if the problem is repeatable following a given set of steps.

Regards,... Fred

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http://code.google.com/p/bigbluebutton

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[alex fergosen]

BigBlueButton Server 0.8-beta-4 (951)
                    Kernel version: 2.6.32-45-generic-pae
                      Distribution: Ubuntu 10.04.4 LTS (32-bit)
                            Memory: 4023 MB

/var/www/bigbluebutton/client/conf/config.xml (bbb-client)
                Port test (tunnel): 10.10.10.36
                              Red5: 10.10.10.36

/etc/nginx/sites-available/bigbluebutton (nginx)
                       server name: 10.10.10.36
                              port: 80
                    bbb-client dir:  #/home/ssu/dev/bigbluebutton/bigbluebutton-                                                                                        client

/var/lib/tomcat6/webapps/bigbluebutton/WEB-INF/classes/bigbluebutton.properties                                                                                         (bbb-web)
                      bbb-web host: 10.10.10.36

/var/lib/tomcat6/webapps/demo/bbb_api_conf.jsp (API demos)
                           api url: 10.10.10.36

/usr/share/red5/webapps/bigbluebutton/WEB-INF/red5-web.xml (red5)
                  voice conference: FreeSWITCH

/usr/local/bigbluebutton/core/scripts/slides.yml (record and playback)
                     playback host: 10.10.10.36


** Potential problems described below **
# The following properties in /var/lib/tomcat6/webapps/bigbluebutton/WEB-INF/cla                                                                                        sses/bigbluebutton.properties have no value:
#     defaultWelcomeMessage
# Warning: nginx is not serving the client from /var/www/bigbluebutton/.
# Instead, it's being served from
#
#     #/home/ssu/dev/bigbluebutton/bigbluebutton-client
#
# (This is OK if you have setup a development environment.)

# Warning: The value (vc.ssu.ac.ir) for playback_host in
#
#    /usr/local/bigbluebutton/core/scripts/slides.yml
#
# does not match the local IP address (10.10.10.36).

# Warning: The API demos are installed and accessible from:
#
#
# Use the API demos test your BigBlueButton setup. To remove
#
#    sudo apt-get purge bbb-demo










we share webcam for about 1 hour , and the problem is repetable ,

[Fred Dixon]

Hi Alex,

Thanks Alex.  Does it require 10 webcams to reproduce the problem.  Does the problem reproduce at 9, 8, 7 or fewer?

Regards,... Fred

-- 
BigBlueButton Developer

http://bigbluebutton.org/
http://code.google.com/p/bigbluebutton

BigBlueButton on twitter: @bigbluebutton

[alex fergosen]

thanks for your attention mr fred .
with 7 to 8 person with webcam , there is not any problem ,
more than this number , people can share the webcam but there are not in audio conference , and suddenly webcames freezed and two or more person kick out randomly.

[Fred Dixon]

Hi Alex,

We've opened an issue for this

  http://code.google.com/p/bigbluebutton/issues/detail?id=1375

We won't be trying to reproduce/fix this in 0.80 as we're nearing the end of 0.81 development.  Instead, we'll test this in 0.81 and see if the problem still remains and, if so, figure out how to fix it.  We're using a later version of red5 in 0.81.

Thanks again for reporting this. 

Regards,... Fred

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http://bigbluebutton.org/
http://code.google.com/p/bigbluebutton

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[alex fergosen]

for the last note , something is unusual for me ,for example when i ant-locale , the command line suddenly stop.is it possible the problem is about bbb , for example some files missing while compiling or maybe some missing file in receiving git repository file or  something else , do u have any expersinces about it ?

[Fred Dixon]

Hi Alex,

Can you test the ten cameras issue again using

  http://dev081.bigbluebutton.org/

And let us know if the problem still occurs.  We are *very* interested to know if you still encounter this issue on the latest build.

Regards,... Fred

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BigBlueButton Developer

http://bigbluebutton.org/
http://code.google.com/p/bigbluebutton

BigBlueButton on twitter: @bigbluebutton

[Gary Deng]

Hi,

Anyone can help me to solve the problem while I am trying install ffmpeg?

The followings are error message:

yasm not found, use --disable-yasm for a crippled build

If you think configure made a mistake, make sure you are using the latest
version from Git.  If the latest version fails, report the problem to the
ffmpe...@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file "config.log" produced by configure as this will help
solving the problem.
Makefile:2: config.mak: No such file or directory
Makefile:47: /common.mak: No such file or directory
Makefile:88: /libavutil/Makefile: No such file or directory
Makefile:88: /library.mak: No such file or directory
Makefile:168: /doc/Makefile: No such file or directory
Makefile:169: /tests/Makefile: No such file or directory
make: *** No rule to make target `/tests/Makefile'.  Stop.
sudo: checkinstall: command not found

Thank you in advance

Gary

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[Fred Dixon]

Hi Gary,

In the future, please post such questions to bigbluebutton-setup

  http://groups.google.com/group/bigbluebutton-setup/topics?gvc=2

in a new thread (not taking over an existing thread).

Which version of BigBlueButton are you trying to install (0.80 or 0.81-dev)?  Can you post the output of the following command

$ dpkg -l | grep yasm

You should see

ii  yasm                              0.8.0-1                                         modular assembler with multiple syntaxes sup

[Gary]

Hi Fred,

Thank you for your help. I am new in this area.
I will try to figure the problem tonight when I go home as I am
trying to install bigbluebutton 0.81 on my home desktop computer.

Regards

Gary

[Fred Dixon]

Hi Alex,

We haven't heard back.  Can you test again using

  http://demo.bigbluebutton.org/

and let us know if you still see the same issue.

Regards,... Fred

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http://bigbluebutton.org/
http://code.google.com/p/bigbluebutton

BigBlueButton on twitter: @bigbluebutton

[ppetasis]

Hi Fred,

we are propably facing the same bug with the latest build of BBB. It has occured two times so far.

The first time there were about about 16 cameras and the second time there were about 8 cameras.

Both times the problem ocuured at about 1 hour after the start of the meeting.

For some users the video of all others was frozen but the sound was normal for all users. 

At the time the problem occured the CPU load on the server was not high and the bandwidth usage was not the bottleneck as far i know.

Some information about the server

BigBlueButton Server 0.81-beta (1341)

BBB is running in a KVM Virtual Machine

I am attaching the debug output. The first freezing (with 16 cameras) occured at 19-6-2013.

We will try to reproduce the problem at the demo version of BBB.

Regards

Panagiotis

[Fred Dixon]

Hi Panagiotis,

We encountered a similar problem when one of the user was using Linux using FireFox, which uses the built-in Flash, which is version Flash 11.2.  We had also turned off the h.264 compression on the server.

What happend was we had three users join, two using Chrome (which runs the latest version of Flash) and one using FireFox on Linux (Flash 11.2).  All users shared 1280x720 webcams.

After about five minutes, all three web cam streams would stop.

In your tests, was there any user accessing BigBlueButton using FireFox on Linux?

Regards,... Fred

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http://bigbluebutton.org/
http://code.google.com/p/bigbluebutton

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[ppetasis]

Hi Fred,

we are not using Firefox for Linux. We are not using browsers in Linux only Windows. Our server has h264 enabled as in the default.

i have more info on the problem from our tests in the demo BigBlueButton server.

The issue seems to be that the videos are freezing when there is a network problem or high traffic on the client but there is no error or warning to the user. When multiple users joined from the same ADSL connection after some minutes the video of some users started freezing. When a user was transmiting video and he saw all other videos freezing his transmission to the other users had frozen also.

It seems like that the red5 is droping video connections silently and the videos are freezing. Propably the application should detect the timeout in transmission and restart the stream instead of freezing which seems very bad to the user. It seems that even a slight network problem or congestion freezes video streaming both incoming and outgoing. If the user joins the meeting again everything seems fine as the video streams start again.

I hope I have given enough information to detect the bug and correct it. Could you suggest further steps or settings to test in our server? Would lowering video qualitymake a difference?

Regards

Panagiotis

[Fred Dixon]

Hi Pangagiotis,

> Would lowering video qualitymake a difference?

It would be worth giving it a try.  

Many thanks for the information you've posted to date!

Cheers,... Fred

[David Le]

Hi Everybody,
I have upgraded to version 0.81. I have a test in LAN. However, after the test about 10 users. the video is still freezing. Anyone like my case ?

CPU op-mode(s):        32-bit
OS: Ubuntu 12.04

[Fred Dixon]

Hi David,

Thanks for helping us get more information on this bug.

When testing 0.81-beta, did any of your users use Ubuntu 12.04 desktop with FireFox to connect and share videos?  We've been able to reproduce the video freeze this way, see

  https://code.google.com/p/bigbluebutton/issues/detail?id=1581

It could be a mis-match between versions of Flash.  Can you describe the clients you were using to connect.

Regards,... Fred

Regards,... Fred

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[Le Nguyen Dang Tuyen]

Hi Fred Dixon,
Thanks for replying.
First, I setup the server with Ubuntu server 12.04 OS. My client with Ubuntu desktop, the lastest version of Flash, The video is freezing.
And then, my client with Windows 7 (pro or ultimate), the latest version of flash, the video is still freezing.
All my client is always sharing webcam and voice in conference

Regards,...David

2013/7/8 Fred Dixon <ffd...@gmail.com>

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[Fred Dixon]

Hi Le,

Just to confirm, is the BigBlueButton server running on Ubuntu 10.04 or Ubuntu 12.04?

Also, can you test again with only Windows 7 clients connecting (no clients from Ubuntu desktop).

Thanks again for your help.

Regards,... Fred

[Le Nguyen Dang Tuyen]

Hi Fred,

I'm so sorry, I'm wrong. The server is Ubuntu server 10.04.4.

My network have 15 webcams. First, 15 client run Ubuntu desktop. The test was failed (the video was freezing).

After that, I setuped OS Windows 7 clients for all 15 client, the video was failed.

Thanks for sharing with me

Regards, David

[David Park]

Hi All.

My server(0.81) have video layout problem.

configuration server

x86_64

 bbb-conf --check

BigBlueButton Server 0.81-beta (1331)

                    Kernel version: 2.6.32-48-server

                      Distribution: Ubuntu 10.04.4 LTS (64-bit)

                            Memory: 2008 MB

/var/www/bigbluebutton/client/conf/config.xml (bbb-client)

                Port test (tunnel): 61.xxx.xx.xx

                              Red5:  61.xxx.xx.xx

/etc/nginx/sites-available/bigbluebutton (nginx)

                       server name:  61.xxx.xx.xx

                              port: 80

                    bbb-client dir:         #/var/www/bigbluebutton

/var/lib/tomcat6/webapps/bigbluebutton/WEB-INF/classes/bigbluebutton.properties (bbb-web)

                      bbb-web host: 61.xxx.xx.xx

/usr/share/red5/webapps/bigbluebutton/WEB-INF/red5-web.xml (red5)

                  voice conference: FreeSWITCH

                     capture video: true

/usr/local/bigbluebutton/core/scripts/bigbluebutton.yml (record and playback)

                     playback host:  61.xxx.xx.xx

** Potential problems described below **

this picture for video chat layout.

abc2211 video is too small.

i did as like below...

1. default layout change to video meet layout.

2. click to abc2121 video because i want to see more big video picture.

3. click to abc2211 video because i want to see more big video picture.

4. try again click abc2121 =>then did as like picture.

this picture when used default layout

5. so i did default layout.

6. but default layout video did as like picture

Thanks.

[ppetasis]

Hi Fred,

the problem is not related to clients using Ubuntu desktop. We are not using Linux clients at all but the problem still occurs as i have described the previous times.

We have once again faced the problem of freezing videos and the problem is exactly the same as it appears in Lee's screenshot.

After the videos freezing we tried logging out and logging in again. After logging in some videos appeared smaller than others as you can see in the screenshot attached.

The videos that were smaller, appeared smaller to all clients as if the streaming server was sending them smaller to all clients.

Reducing the quality to 70% made no difference.

After logging in again, some of the videos broadcasted did not appear in the video dock. It was possible to open them by clicking the video button in the participant list.

I think that it is a serious bug that needs to be solved before the 0.81 release.

Please inform us what tests to run to help solve this bug.

Regards

Panagiotis

[Fred Dixon]

Hi David,

An update on our end ... we've had five webcams 320x200 resolution running for about six hour now on a BigBlueButton server and haven't encountered any problems.

We're going to go out and buy five more webcams tomorrow and try again to reproduce your problems.

Regards,... Fred

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BigBlueButton Developer

http://bigbluebutton.org/
http://code.google.com/p/bigbluebutton

BigBlueButton on twitter: @bigbluebutton

[Le Nguyen Dang Tuyen]

Hi Fred,

Thanks for replying

My LAN speed is 100Mbps. While testing with version 0.81 in the conference for about 3 hours, more than half the clients (8/15) are freeze. In this case, video is freeze, audio failed Continuous. So these clients have to log out and log in again.
Version 0.81 is really fantastic. So you should fix this problem soon.

2013/7/10 Fred Dixon <ffd...@gmail.com>

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[Fred Dixon]

Hi Le,

We're now working on reproducing the issue on our end.  Thanks again for helping us test!

Regards,... Fred

[Fred Dixon]

Hi ppetasis,

Can you try duplicating this problem on 

  http://demo.bigbluebutton.org/

and let us know if it occurs there as well.

Regards,... Fred

[Fred Dixon]

Hi Le,

OK.  We've just tried 10 users connected to a BigBlueButton server on our LAN and, after three hours, they are still working.

So, just to remove any differences, can you update your 0.81-beta server to the latest packages

  sudo apt-get update

  sudo apt-get dist-upgrade

and test again on your end.  We're *very* interested to see if you still encounter the same issues.

Regards,... Fred

-- 
BigBlueButton Developer

http://bigbluebutton.org/
http://code.google.com/p/bigbluebutton

BigBlueButton on twitter: @bigbluebutton

[Le Nguyen Dang Tuyen]

Hi Fred,
Can you give me detail of your test?
My test like this:
I test with 15 clients, these clients are in 1 room and 15 clients share webcam. At that time, in the dock video of each client has 15 video screens. Each time 1 client is speaker. So the audio and image  always continuous. After that, about 1 hour, video is freezing, audio failed continuous

Regards, David

2013/7/11 Fred Dixon <ffd...@gmail.com>

[Fred Dixon]

Hi Le,

We've used the latest build of BigBlueButton 0.81-beta.  This really shouldn't make a difference, but we didn't see any disconnects or problems with video with ten users.  You can update your server 

  sudo apt-get update

  sudo apt-get dist-upgrade

Can you double-check on your end with the latest build and try it with ten users.

Regards,... Fred

[ppetasis]

Hi Fred,

I think the problem is not related to using an old version of BigBlueButtton. During all the times that we have encountered the problem we were using the latest beta version. Besides that we have encountered the problem in the demo server that is always to the latest version. The only difference in the official demo server is that the video was freezing but no videos were appearing smaller than the other. Maybe it was the fact that in the demo server we used only 7-8 cameras and not 15 or more.

In real conditions users are joining and leaving the session. Maybe that makes a difference from using ten cameras from the start and having them open for many hours.

The fact that in most cases it happens after about 1 hour maybe is related to some buffer of red5.

To help locate the bug I am attaching the output of bbb-conf –debug the last time the problem occurred. 

I hope it helps.

Regards

Panagiotis

[Fred Dixon]

Hi Panagiotis,

Thanks again for the reports, we'll take a look at the logs.  We recommend that students have 1Mbits down and 0.5 Mbits upstream bandwidth.  

Can you give us a sense of the bandwidth for your users.

Regards,... Fred

[jossef]

hi fred 

from my experience it looks to me a network hardware problem, he should replace his network switch

בתאריך יום ראשון, 16 בדצמבר 2012 17:17:08 UTC+2, מאת alex fergosen:

hi my freind
today i have test the bbb on the server with this configuration :
Architecture:          i686   >> i have install 64bit iso but it is i686? any idea?
CPU op-mode(s):        32-bit, 64-bit
CPU(s):                4
Thread(s) per core:    1
Core(s) per socket:    2
CPU socket(s):         2
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 15
Stepping:              6
CPU MHz:               2666.329
Virtualization:        VT-x
L1d cache:             32K
L1i cache:             32K
L2 cache:              4096K

i have test it in LAN ,when 10 person share therir camera , more than this number it freezes the videos and suddenly kick out some users,
the network foundemental is ok , there is not any problem with it , is server in normal mode for bbb ?
any experince will appriciate

[ppetasis]

Hi Fred

The users are all using ADSL connections. The ADSL lines are 24Mbps/1Mbps (download/upload) but real ADSL speed is usually around 10-15 Mbps download and 1Mbps upload.

Watching the server traffic with iptraf I could see that the total outgoing traffic was a little higher than 5Mbps. If that is distributed to all the clients I suppose that each client receives less than 0.5Mbps. Am I right?

I suppose that a network problem could cause the freezing of the videos but I don’t know if that would result in some video starting smaller than others as it shows in the screenshots. In the case of a LAN I could be a hardware network error (the freezing) but in our case there is no central switch as we are all connected through ADSL lines. We were also constantly pinging Google at the time of the test and at the moment the video froze there was no interruption in the ping packets. One more thing is that the sound at the time the videos were frozen was ok. I suppose a network problem would create problems to the sound that flows through the network.

I believe that it is a software bug maybe in the red5 streaming server or BigBlueButton. Maybe it is related to network conditions but the network alone is not the problem. Even if the network connection drops the software should handle it some way (I think previous versions of BigBlueButton and probably 0.81 showed a message Reconnecting to the Server when it detected network disconnection. Maybe now the video module cannot handle network problems and freezes or shows smaller videos instead of showing some message or restarting the stream. Also the problem of smaller videos is there even if the client logs out and logs in again.

Is there a build of red5 that is newer than the one currently in 0.81 beta? Could the open issue 325 in red5 http://code.google.com/p/red5/issues/detail?id=325 be related?

Regards

Panagiotis 

[Fred Dixon]

Hi Patagiotis,

We need to do more testing on our end.  I've also decided we will not delay the release of 0.81 to fix this issue.  My reasons are below.

BigBlueButton (specifically red5) has been working well with multiple webcams.  We've seen many meetings proceed with less than 10 webcams without issues.  We're not saying it's perfect.  When a user connects via Ubuntu Desktop using FireFox (Flash 11.2) and broadcasts a webcam HD, the video will stop after a few moments, see

  https://code.google.com/p/bigbluebutton/issues/detail?id=1581

This is an edge case, but a valid bug nevertheless.

For your scenario, we also suspect, as you do, the problem is within red5 and/or the Flash player on how it buffers data.  

We worked quite closely with the red5 team earlier this year to upgrade BigBlueButton to the latest build.  Many bugs were fixed, in both products, and we believe we helped improve the support in red5 for RTMPT, see

  https://code.google.com/p/red5/issues/detail?id=281

Red5 is at the core of BigBlueButton.  For stability, we've frozen our version of red5 now for three months to create and test a stable build of BigBlueButton for release.

At the moment, we're thirteen months into development of the release of 0.81.  We could hold up this release and begin another round of testing and updates to red5, but it means we would release of 0.81 would be near end of 2013, as opposed to releasing much sooner.  

Our goal for 0.81 it to make it better than 0.80 in terms of stability, usability, and features (in that order).  We have fixed over 150 issues since 0.80, and the is a large community of BigBlueButton users (many of which share only a few webcams during of session) who stand to benefit from those improvements when we release.

So, we're going to defer resolving this webcam issue until the next release, when we can upgrade to the latest version of red5 and do another full round of testing -- with emphasis on use of many webcams.   

This doesn't mean we're going to stop testing and gathering more data, but our focus now is on finishing this release so the entire community can benefit. 

Warm regards,... Fred

[Fred Dixon]

Hi Patagiotis,

We've completed more testing on Friday with regards to reproducing the video freezing.  So far, with the latest build of BigBlueButton 0.81-beta, we were able to hold two sessions with more than ten users over an hour..

In the first test, we had 16 users connect over the internet to a remote server.  The users were in Canada, Brazil, and Ecuador.  The server was in North America.  We left the webcams running for 3+ hours and the sessions remained stable.  See image capture below.

After a few hours most of us left.  However, I just logged in now (about 35+ hours after we started the test), and two webcams were still broadcasting.  

In the second test, we monitored an on-line class by Howard Rheingold (a digital media author) who used BigBlueButton to teach fourteen students with webcams.  The class ran for 1.5 hours.  We didn't detect any user problems with the webcams.  See

  https://twitter.com/hrheingold/status/355761100937129984

   

Patagiotis, despite the positive results above, you are clearly encountering issues on your end.   In an earlier message you had written

> Both times the problem occurred at about 1 hour after the start of the meeting.

Is your BigBlueButton server behind a firewall?   It seems odd that both times the problems occurred after one hour.  As you postulated, the problem could also be a combination of buffers in red5.  

We plan to upgrade to the latest build of red5 after the release of 0.81.  Right now, we're probably about four months behind, but again that's by choice so we could have a stable platform on which to test.

Thanks again for sharing the information Patagiotis!

Regards,... Fred

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BigBlueButton on twitter: @bigbluebutton

[Anil Singh Bafila]

to bigbluebutton-.

Hi Fred,
I logged in on your demo server with  14 macs and with a windows laptop (flash 11.8.800.94)  I am getting the  problem of video,I am not able to see other mac but some of them can see my video.

I have refreshed my windows many time I am attaching  an image for your reference.
on most of my mac video are freezed I am using your http://demo.bigbluebutton

 

server .

[Fred Dixon]

Hi Anil,

Thanks for doing this test!  I was able to login a few minutes ago and saw the same as you did.

It might be that your upstream network was saturated with all the webcams.   Question: do you have a BigBlueButton server within your LAN that you can repeat the test?  

Again, thanks for sharing this!

Regards,... Fred

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BigBlueButton Developer

http://bigbluebutton.org/
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On Sun, Jul 14, 2013 at 7:11 AM, Anil Singh Bafila <anil....@iic.ac.in> wrote:

Hi Fred,
I logged in on your demo server with  14 macs and with a windows laptop (flash 11.8.800.94)  I am getting the  problem of video,I am not able to see other mac but some of them can see my video.

I have refreshed my windows many time I am attaching  an image for your reference.

on most of my mac video are breezed I am using your http://demo.bigbluebutton server .

[Anil Singh Bafila]

Hi Fred,
 
Yes I have a local server I have checked that server I will post Screen shots of problem after some hours .

[Anil Singh Bafila]

Hi all,

The problem of freezing video is because client is not sending the data to the server I checked the computer which was freezing .
I can any one tells where is the problem bbb client side or clients computer problem or network problem .if it is clients problem when he is able to broadcast for some time after that he freeze or problem is in red5 server can any one tell this i am facing this bug every time i connect more then 10 computers   .I have lots of bandwidth and processing capability my server load is only 1% with 20 users or it is bigbluebutton limitation to no of users in one conference.

[Chad Pilkey]

Could the issue be some sort of Flash exception? If there's a computer that it freezes up on consistently it might be worth it to download the debug version of Flash and see if any exceptions pop up. If you want to try downloading the debug version of Flash you can get it here, http://www.adobe.com/support/flashplayer/downloads.html, just make sure to get the correct plugin for whatever browser you're using.

[Anil Singh Bafila]

Hi Chand Pilkey,

the issue is not only with single computer is it random it happens with all computers.

[Fred Dixon]

Hi Anil,

What happens when you connect 5 computers for 2 hours -- do you see the same problem (is there a threshold)?

We're not going to make any more changes for the upcoming 0.81 release to try and address this issue, and we don't know exactly where the problem is happening, but if we gather more data, then when we start the development cycle for the next release we can update our version of red5 and try re-running the same tests to see if there is an improvement.

Thanks again Anil for sharing this data.

Regards,... Fred

On Wed, Jul 17, 2013 at 1:22 PM, Anil Singh Bafila <anil....@iic.ac.in> wrote:

Hi Chand Pilkey,

the issue is not only with single computer is it random it happens with all computers.

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[Fred Dixon]

Hi Anil,

Could we ask that you test this problem on our latest build of 0.9.0-dev.

We're getting close to releasing 0.9.0-dev --- which saw major updates to BigBlueButton itself and the underlying OS --- and I've been looking forward to posting a follow-up to this thread and seeing if we've made progress on resolving your issue.

You could use 

  http://test.bigbluebutton.org/

and one of the sample rooms

  

   http://test.bigbluebutton.org/demo/demo2.jsp

to try out with a group of people.  We would be *very* interested in your results.

Regards,... Fred

  

[Anil Singh Bafila]

Hi Fred,

I will test it and submit report to to you soon

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Anil Singh Bafila

Institute of Informatics & Communication
University of Delhi South Campus

[Anil Singh Bafila]

Hi Fred,

I tested the server with about 18 computers connected to your server on Sat, Aug 23, 2014 at 11:04 PM Indian Time

You can check your servers logs for errors or exception, I am still getting the blank screen on some connection I used safari and  Mozilla on Mac Os Mavericks for testing purpose. Sorry for replying late.

If you want any help please ask.I am also attaching screen shoots of the 2 clients.

[Fred Dixon]

Hi Anil,

Thanks for doing the tests! Having 18 webcams is pretty good -- even if a few loose video.  It's a lot of bandwidth to push down to the user.

Would it be possible to do another round of tests with 9 webcams?  It would be half the bandwidth and I'm curious is if affects the stability of the videos.

Regards,.. Fred

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[HostBBB.com]

18 users, receive 17 cams from each other so that around 300 streams being passed around to all the clients.

Depending on camera resolution a single stream could easily push 450kps if HD with a lot of motion is happening.

The choke point is probably going to the  clients internet connection.  (for example a user at home with 5mb down connection),  or if you are performing all the test within your corporate lan, but the bbb server is external everything is going thru edge router.

You might also exceed the 100mb server connection for large meetings and need a 1GB connection.

One way to test the application and eliminate the network bottle necks, is to create a few cloud images with Ubuntu desktop, and run the entire video stress test in single zone,  you can also use ffmpeg to simulate more video connections to red5. and really get a good handle on stability.

regards,

Stephen

hostbbb.com

[Fred Dixon]

Hi Anil Singh Bafila,

Would you be able to do the same tests again on the most recent version of BigBlueButton 1.1-beta, see

   https://groups.google.com/d/msg/bigbluebutton-dev/K3y_2YKuWm8/qoLlDAthEgAJ

You can also use https://demo.bigbluebutton.org/ for the tests as well.  We would be interested to see if you still get any blank screens.  

Recently, we've seen some sessions use BigBlueButton to share over 20 webcams.

Regards,... Fred

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[anil....@iic.ac.in]

Hi Fred,

Long time!! Great to hear from you!! I'll engage some of students of Institute of Informatics and Communication 

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[Fred Dixon]

Thanks Anil!

Regards,... Fred

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