[Icecast] mp3 vs ogg question (reformatted)

Jason Jason at Weatherserver.net
Tue Sep 21 22:11:47 UTC 2004


My problem is I run the win32 version and i'm guessing there isn't just a 
entry i can add to the icecast config file.




----- Original Message ----- 
From: "Brendan Cully" <brendan at xiph.org>
To: <>
Sent: Tuesday, September 21, 2004 5:31 PM
Subject: Re: [Icecast] mp3 vs ogg question (reformatted)


> On Tuesday, 21 September 2004 at 17:16, Jason wrote:
>> oops the last was in HTML and I know alot of you won't answer html email
>>
>> How come the song data shows up faster with ogg when with mp3.
>>
>> I ask this because the people who are using icecast to stream police
>> scanners also made a system to send realtime updates to what channel 
>> people
>> are listening to. With Ogg the title shows up about .5 of a second before
>> the talking starts but with mp3 it's about 1-2 seconds after the talking
>> starts.
>>
>> Is there anyway to speed up the text on mp3 or are we just stuck with it?
>
> This is likely to be the result of the metadata interval setting. I
> believe by default icecast will send metadata updates every 8 or 16k,
> regardless of the bit rate. It sounds like you're probably using a
> very low bit rate, which means 8k could be a couple of seconds.
>
> I don't have the icecast source here, but if it's not already a config
> option, it shouldn't be too hard to lower the value in the
> source. Since metadata only costs a single byte every interval when
> there's been no change, it shouldn't have any noticeable impact on
> your stream, even if you lower it to 1 or 2k.
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