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Thread: Streams Lag A Lot With Loads Of Viewers

  1. #1

    Default Streams Lag A Lot With Loads Of Viewers

    I get a lot of viewers viewing my stream so the more people view it the more it lags so any chance to reduce the bitrate on the server so it doesnt go over a certain bitrate so
    if i wanted the bitrate to not go over a certain size how would i go about doing that please to prevent lag as im getting a lot of people saying it lags a lot, so would appreciate it if anyone could help with this.

  2. #2
    Join Date
    Jun 2011
    Posts
    1,037

    Default

    Hi,
    It depends what limit you are hitting. If you are hitting a bandwidth limit (likely) then you could reduce the bandwidth at he encoder end (if live).
    If VOD you would reduce the bitrate by re-encoding the file(s) at a lower rate. A lower bitrate could reduce quality though if the bitrate is already
    at the optimal.
    You may be hitting some other system limit though, and you would need to monitor system resources to see if that's the case. If so you would
    need to upgrade or add another server.

    Daren

  3. #3

    Default

    Quote Originally Posted by daren_j View Post
    Hi,
    It depends what limit you are hitting. If you are hitting a bandwidth limit (likely) then you could reduce the bandwidth at he encoder end (if live).
    If VOD you would reduce the bitrate by re-encoding the file(s) at a lower rate. A lower bitrate could reduce quality though if the bitrate is already
    at the optimal.
    You may be hitting some other system limit though, and you would need to monitor system resources to see if that's the case. If so you would
    need to upgrade or add another server.

    Daren
    Well i have 100TB Bandwidth on my server so i highly doubt it, How do i configure my Wowza server in the applications.xml so that the encoder cannot go over a certain bitrate? as i think when it goes to a really high bitrate then with all the people watching it lags like mad

  4. #4
    Join Date
    Jun 2011
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    1,037

    Default

    Hi,
    It would be best then to know your full configuration / server specs, to make more accurate suggestions.

    You can limit by number of connections which ma seem more appropriate.
    Wowza Streaming Engine 4 has a built-in way of limiting connections per Application, under your Application in the manager UI the setup tabe has an option
    named 'Maximum Connections: Limit number of player connections.' Just click 'Edit', select the option and enter the number of connections to limit to.


    This is how to limit the number of player connections per stream.

    Do also check that your sever is properly by tuned by referencing this guide, especially if you are running
    Wowza Media Server version 3.6.4 or earlier.

    Daren

  5. #5

    Default

    Quote Originally Posted by daren_j View Post
    Hi,
    It would be best then to know your full configuration / server specs, to make more accurate suggestions.

    You can limit by number of connections which ma seem more appropriate.
    Wowza Streaming Engine 4 has a built-in way of limiting connections per Application, under your Application in the manager UI the setup tabe has an option
    named 'Maximum Connections: Limit number of player connections.' Just click 'Edit', select the option and enter the number of connections to limit to.


    This is how to limit the number of player connections per stream.

    Do also check that your sever is properly by tuned by referencing this guide, especially if you are running
    Wowza Media Server version 3.6.4 or earlier.

    Daren
    I dont have stream engine 4 i have 3.6 so how would i go about tuning it correctly for version 3.6 and also how do i limit player connections on version 3.6 as all tutorials seem to have gone for people who are not on version 4,
    and here are my server specs:

    HP DL120G6/Intel Xeon x3440-16
    CPU 2.53Ghz
    Memory: 16 GB DDR3
    Hard Drive: 4 x 1 TB SATA2
    Bandwidth: 100 TB
    Download Speed of 700 MB/s, Upload Speed of 690 mb/s, Ping = 1 ms

    So basically as i said i want to know how i go about setting the server up so the bitrate stays at a certain point and doesnt go beyond that if possible when live streaming, i saw this in another thread:
    <Property>
    <Name>sortBufferSize</Name>
    <Value>750</Value>
    <Type>Integer</Type>
    </Property>

    does that do what i asked?
    Last edited by dairees567; 07-13-2014 at 12:36 PM.

  6. #6

    Default

    anyone?

  7. #7
    Join Date
    Jun 2011
    Posts
    1,037

    Default

    Hi,
    Tuning for 3.6.4 and earlier can be found lower down in the tuning guide provided.
    This is the direct link.

    The other guide mentioned will also work with 3.6.4 and earlier, but will require the module and properties to be set
    in the [install-dir]/conf/[ApplicationName]/Application.xml file.

    What should the bitrate of your stream be? Is it provided by your own encoder, or from a re-streamed URL?
    Or are other users publishing streams to your server for viewing by other users?
    I ask, because there is a way to impose a limit on the encoded stream, but that will just stop the stream from being published based
    on bandwidth usage, and that may not be what you need? However, knowing your workflow will make it easier to solve.

    The 'sortBufferSize' property is mainly for resolving sync issues.

    Daren

  8. #8

    Default

    Hi,

    This is the connection limiter for the earlier versions os Wowza Media Server. http://www.wowza.com/forums/content.php?152.

    It is still available in the old Wowza Server AddOn Collection that you can get from this page, http://www.wowza.com/forums/content....acyModulesList.

    Roger.

  9. #9

    Default

    ok so ive taken the plunge now and got wowza media engine 4, still having some lagging when loads of my viewers view the streams, so what would be the best solution to this problem please as i said my server cant be the problem as the specs and speed are very high so whats the next step

  10. #10

    Default

    also tried lowering the stream bitrate as well and no such luck

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