server side code get metadata of a live stream

Wowza Developer Dojo
1

hi,

is it possible and how i get the metadata on server-side (video width and height) of a live stream? i need to limit the publisher video resolution!

thanks

2

Here is the basic idea:

package com.wowza.wms.plugin.test.module;
import com.wowza.wms.amf.AMFPacket;
import com.wowza.wms.module.*;
import com.wowza.wms.stream.*;
import com.wowza.wms.amf.*;
public class ModuleOnMetadataDebugger extends ModuleBase
{
	class MetadataDebugger implements IMediaStreamActionNotify2
	{
		public void onPlay(IMediaStream stream, String streamName, double playStart, double playLen, int playReset)
		{
		}
		public void onPublish(IMediaStream stream, String streamName, boolean isRecord, boolean isAppend)
		{
		}
		public void onUnPublish(IMediaStream stream, String streamName, boolean isRecord, boolean isAppend)
		{
		}
		public void onPause(IMediaStream stream, boolean isPause, double location)
		{
		}
		public void onSeek(IMediaStream stream, double location)
		{
		}
		public void onStop(IMediaStream stream)
		{
		}
		public void onMetaData(IMediaStream stream, AMFPacket metaDataPacket)
		{
			byte[] data = metaDataPacket.getData();
			AMFDataList metaDataList = new AMFDataList(data);
			getLogger().info("onMetaData["+stream.getContextStr()+"]: "+metaDataList.toString());
		}
		public void onPauseRaw(IMediaStream stream, boolean isPause, double location)
		{
		}
		
	}
	
	public void onStreamCreate(IMediaStream stream)
	{
		getLogger().info("onStreamCreate");
		stream.addClientListener(new MetadataDebugger());
	}
}

Charlie

3

Try like this:

public void onMetaData(IMediaStream stream, AMFPacket metaDataPacket) 
{
	getLogger().info("onMetaData By: " + stream.getClientId());
	byte[] data = metaDataPacket.getData();
	AMFDataList metaDataList = new AMFDataList(data);
	getLogger().info("onMetaData["+stream.getContextStr()+"]: "+metaDataList.toString());
	AMFDataObj obj = getParamObj(metaDataList, 1);
	getLogger().info("Duration: "+ obj.getString("audiodevice"));
}

Richard

4

thanks charlie but it throws all the metadata:

INFO server comment - onMetaData[test/definst/live_1]: AMFDataList:

[0] onMetaData

[1] object

{Obj[]: author: “”, copyright: “”, description: “”, keywords: “”, rating: “”, title: “”, presetname: “Custom”, creationdate: "Wed Mar 23 16:53:06 2011

", videodevice: “Video1”, framerate: 15.0, width: 320.0, height: 240.0, videocodecid: “avc1”, videodatarate: 500.0, avclevel: 31.0, avcprofile: 66.0, videokeyframe_frequency: 5.0}

how i get only the width??? i’m newbie at java sorry! :wink:

5

problem solved!

thanks rrlanham and charlie.