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buffer size.

 
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mirror666



Joined: 12 Nov 2008
Posts: 2

PostPosted: Wed Nov 12, 2008 8:53 am    Post subject: buffer size. Reply with quote

Hi. I'm new to icecast, i set it up yesterday and found it very interesting. There is one issue which bothers me. I want to have a very small delay time when broadcasting, since normally when i broadcast something, a client will hear it after about 7-10 seconds. I want to make this time smaller, like maximum 2 seconds or less. So i thought about playing around with
Code:

<burst-size>65536</burst-size>
<queue-size>102400</queue-size>

making them smaller but i noticed no desirable effect. anyone can help me on this issue?
thank you in advance

edit:
ok by some search on the forum i found out the following :
a.) icecast doesn't add much latency, i can adjust this by the burst-size parameter
b.) most latency is added by the players so i need to configure them.
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Last edited by mirror666 on Wed Feb 02, 2011 4:34 pm; edited 1 time in total
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mirror666



Joined: 12 Nov 2008
Posts: 2

PostPosted: Wed Nov 12, 2008 1:48 pm    Post subject: Reply with quote

fact b) begs the question :

does anyone know of any web embedded/java/flash/whatever player which has a configurable buffer ? windows media player is not an option because it has to be done manually, but i don't want the end user to interfere with that.
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Last edited by mirror666 on Wed Feb 02, 2011 4:34 pm; edited 1 time in total
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karlH
Code Warrior
Code Warrior


Joined: 13 Jun 2005
Posts: 5476
Location: UK

PostPosted: Wed Nov 12, 2008 2:46 pm    Post subject: Reply with quote

the icecast burst size affects this delay but you are correct that the players pre buffering size also affects this latency as well. Most people don't care about the latency as they have no reference for comparison. You should have a larger queue size (100k is not a lot), but whatever size you make it it's won't affect latency.

Most web embedded players are very limited, I'm not sure of any that allows setting the pre buffering.

karl.
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