Icecast Streaming Media Server

[davect99]

Running Icecast 2.32-kh27.1 on Windows Server 2003. 24kbps AAC+ stream (32k sample rate). Every so often the stream skips or "hiccups". Plenty of headroom concerning CPU usage. This is running on a dedicated server at a data center. When I was using a hosted Icecast stream originating from the same data center it did not skip. My Shoutcast and WMA streams on this same computer and originating from the same encoder do not skip. I've listened using JW Player (Flash) and Winamp with similar results. I've experimented with queue and burst sizes. What I have now is
<queue-size>524288</queue-size>
<burst-size>98304</burst-size>

Any ideas where to look? Bigger queue and/or burst? I also heard this version doesn't really care for 32k sample rate. Is that true?

[karlH]

a 32k samplerate should be ok, no one has mentioned specific format issues. On windows you may want to increase the window size as that could be the cause of stalls. You can add an option like

<so-sndbuf>32768</so-sndbuf>

to either <listen-socket> or <mount>. I think the default is 8k for that on windows, obviously while increasing it allows for more data to be in flight to the listener, the downside is that it increases memory use when you have a lot of listeners.

karl.

[davect99]

Thanks Karl. So far using <so-sndbuf>16384</so-sndbuf> seems to be working well. Along with commenting out the queue and burst parameters so as to use their default values.