[Freeswitch-users] Mod_shout using with icecast Big delay

Jorge Núñez jorgefren12 at gmail.com
Thu Aug 15 21:07:35 MSD 2013 

Anthony and just for test how can I reduce the latency? and thanks Michael
for use webrtc Do I need to use Sipml5 or JSSIP o are there any othe way to
use because I was trying to find some information about mod_html5 but I
didn´t find

thanks

Jorge


2013/8/15 Michael Jerris <mike at jerris.com>

> The alternative if you want in sync audio would be to use webrtc endpoints
> to listen.
>
> On Aug 14, 2013, at 7:19 PM, Anthony Minessale <
> anthony.minessale at gmail.com> wrote:
>
> Icecast is not designed for low-latency and realtime audio.  Its designed
> for higher quality reliable audio.  The servers and the client libs both
> use latency and buffering to guarantee this.  There are some techniques to
> reduce the buffering on at least the FS side but then you will start
> getting skips and resets if you miss any packets.
>
> This comes up all the time when people first try doing this.  Either you
> need to just accept the delay since most people will not even know its
> there or use some other method.
>
>
>
>
> On Wed, Aug 14, 2013 at 5:12 PM, Stephen Dame <sdame at 207me.com> wrote:
>
>> Did you restart the freeswitch server after changes to the config
>> files,   I’m not sure 100% if reloadxml resets the conference settings. *
>> ***
>>
>> ** **
>>
>> Also I use some flash based players, I think there where client settiings
>> for buffering.   Can you set buffer in HTML tag?****
>>
>> ** **
>>
>> Regards,****
>>
>> Stephen****
>>
>> ** **
>>
>> 207 Technology Group Inc.   1-888-229-9756  skype: Stephen_Dame****
>>
>> ** **
>>
>> *From:* freeswitch-users-bounces at lists.freeswitch.org [mailto:
>> freeswitch-users-bounces at lists.freeswitch.org] *On Behalf Of *Jorge Núñez
>> *Sent:* Wednesday, August 14, 2013 4:18 PM
>>
>> *To:* FreeSWITCH Users Help
>> *Subject:* Re: [Freeswitch-users] Mod_shout using with icecast Big delay*
>> ***
>>
>> ** **
>>
>> Hi thanks, I set your configuration but nothing changed, I reduced the
>> burst size and it takes me just 11s and also I tried with 8k, 16k and 32k
>> and nothing change****
>>
>> ** **
>>
>>     <limits>****
>>
>>         <clients>100</clients>****
>>
>>         <sources>10</sources>****
>>
>>         <threadpool>5</threadpool>****
>>
>>         <queue-size>524288</queue-size>****
>>
>>         <!-- <queue-size>524288</queue-size> -->****
>>
>>         <client-timeout>30</client-timeout>****
>>
>>         <header-timeout>15</header-timeout>****
>>
>>         <source-timeout>10</source-timeout>****
>>
>>         <!-- If enabled, this will provide a burst of data when a client
>> ****
>>
>>              first connects, thereby significantly reducing the startup *
>> ***
>>
>>              time for listeners that do substantial buffering. However,**
>> **
>>
>>              it also significantly increases latency between the source**
>> **
>>
>>              client and listening client.  For low-latency setups, you***
>> *
>>
>>              might want to disable this. -->****
>>
>>         <burst-on-connect>0</burst-on-connect>****
>>
>>         <!-- same as burst-on-connect, but this allows for being more****
>>
>>              specific on how much to burst. Most people won't need to****
>>
>>              change from the default 64k. Applies to all mountpoints ****
>>
>> ** **
>>
>>  -->****
>>
>>         <burst-size>4096</burst-size>****
>>
>>     </limits>****
>>
>> ** **
>>
>> Regards****
>>
>> ** **
>>
>> Jorge****
>>
>> ** **
>>
>> ** **
>>
>> 2013/8/14 Stephen Dame <sdame at 207me.com>****
>>
>> Jorge, ****
>>
>>  ****
>>
>> Play around with the burst size and queue size…  here is my xml config
>> around 3-4 second delay from 16k freeswitch conference. ****
>>
>> To small a buffer and the players disconnect… Im also running icecast on
>> same server.****
>>
>>  ****
>>
>> <icecast>****
>>
>>     <limits>****
>>
>>         <clients>100</clients>****
>>
>>         <sources>10</sources>****
>>
>>         <threadpool>5</threadpool>****
>>
>>         <queue-size>524288</queue-size>****
>>
>>         <client-timeout>30</client-timeout>****
>>
>>         <header-timeout>15</header-timeout>****
>>
>>         <source-timeout>10</source-timeout>****
>>
>>         <burst-on-connect>1</burst-on-connect>****
>>
>>         <!-- same as burst-on-connect, but this allows for being more****
>>
>>              specific on how much to burst. Most people won't need to****
>>
>>              change from the default 64k. Applies to all mountpoints  -->
>> ****
>>
>>         <burst-size>65535</burst-size>****
>>
>>     </limits>****
>>
>>  ****
>>
>> Regards,****
>>
>> Stephen****
>>
>>  ****
>>
>> *From:* freeswitch-users-bounces at lists.freeswitch.org [mailto:
>> freeswitch-users-bounces at lists.freeswitch.org] *On Behalf Of *Ken Rice
>> *Sent:* Wednesday, August 14, 2013 12:35 PM
>> *To:* FreeSWITCH Users Help
>> *Subject:* Re: [Freeswitch-users] Mod_shout using with icecast Big delay*
>> ***
>>
>>  ****
>>
>> You have to keep in mind that icecast itself has a fair bit of buffering
>> involved with it and theres not a lot you can do about that
>>
>>
>> On 8/14/13 11:30 AM, "Jorge Núñez" <jorgefren12 at gmail.com> wrote:****
>>
>> Hi I am using mod_shout to send a conference call to icecast and hear it
>> from a tag audio in html5 in realtime, but it has a big delay like 12
>> seconds. How can I reduce the latency of the audio sent from freeswitch or
>> what can I do to improve this.
>>
>> Regards
>>
>> Jorge****
>> ------------------------------
>>
>> _________________________________________________________________________
>> Professional FreeSWITCH Consulting Services:
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>> http://www.freeswitchsolutions.com
>>
>> 
>> 
>>
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>>
>> --
>> Ken
>> *http://www.FreeSWITCH.org <http://www.freeswitch.org/>
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>>
>> _________________________________________________________________________
>> Professional FreeSWITCH Consulting Services:
>> consulting at freeswitch.org
>> http://www.freeswitchsolutions.com
>>
>> 
>> 
>>
>> Official FreeSWITCH Sites
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>> ** **
>>
>> _________________________________________________________________________
>> Professional FreeSWITCH Consulting Services:
>> consulting at freeswitch.org
>> http://www.freeswitchsolutions.com
>>
>> 
>> 
>>
>> Official FreeSWITCH Sites
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>>
>
>
> --
> Anthony Minessale II
>
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> _________________________________________________________________________
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> http://www.freeswitchsolutions.com
>
> 
> 
>
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>
>
> _________________________________________________________________________
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> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> 
> 
>
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