Troubleshooting live streaming issues

[charlie]

This forum post has moved to the following article:

http://www.wowzamedia.com/forums/content.php?79

Enjoy,
The Wowza Team

[AdamDaze]

Hi there, I too am getting audio about half-a-second prior to video. Tried this post. Using wirecast on the flash low bandwidth, viewing using adobes opem source media player. Any idea how to set a fixed audio delay? Doesn't seem to drift.

[ianbeyer]

Adam,

There is a delay parameter in the Application.xml - Let me dig it up and get back to you. I used that when I was using wirecast (back before it did native RTMP).

[AdamDaze]

Cheers. I'll RTFM in the meantime, but i recall seeing it around these foums but cant find it anymore. Bit odd really, is that a general hitch with wirecast eh.

[ianbeyer]

I thought it was an RTSP thing myself, but it could well be a Wirecast thing. Last I checked, Wirecast used quicktime's h.264 encoder, and I wasn't especially impressed with it.

I'm still trying to find where that parameter is. I got it from Charlie a while back, and it's moderately obscure.

[charlie]

Add the following property to the Streams/Properties in [install-dir]/conf/[application]/Application.xml (be sure to get the correct properties container - there are several in Application.xml):

<Property>
        <Name>audioLag</Name>
        <Value>250</Value>
        <Type>Integer</Type>
</Property>

Charlie

[AdamDaze]

Well thats interesting, it was a 750ms delay... Now to leave it running overnight and see if it drifts Seems to have fixed in the short term, thanks.

[ianbeyer]

Thanks, Charlie! I thought it was called "AudioDelay", no wonder I couldn't find it !

[dnetman99]

Can this audioLag be used in conjunction with the other video and audio out of sync properties?

Thanks

[dnetman99]

My application has <Streams> as below:

<Streams>
	<StreamType>live</StreamType>
	<StorageDir>${com.wowza.wms.context.VHostConfigHome}/content</StorageDir>
	<KeyDir>${com.wowza.wms.context.VHostConfigHome}/keys</KeyDir>
</Streams>

How would the properties be added to this? Around whats there or another with property inside it?

Thanks