stream name group playing error

Wowza Streaming Engine
1

I get the following code in the error log over and over again when trying to play a transrated stream name group from strobe player.

I can play a specific transcoded stream with transrate and play fine with no errors from strobe player. such as myStream_360p, but when i try ngrp:myStream_all the video starts and then buffers along time and doesnt stop and i get this error.

Incoming stream: teradek cube

I have Compresion Profile options on the cube: High, Main or Baseline. They are all level 4.0 and I dont see anywhere to change this, dont know if this affects it?

When following the troublshooting steps at: https://www.wowza.com/docs/how-to-set-up-and-run-wowza-transcoder-for-live-streaming

I search access log for loading libraries, none are found, but the template did load.

	2012-01-05	19:07:52	-	-	-	-	-	71001.269	-	-	-	-	-	-	-	-	AMFDataObj.deserialize[196:179]: java.nio.BufferUnderflowException
ERROR	server	comment	2012-01-05	19:07:52	-	-	-	-	-	71001.271	-	-	-	-	-	-	-	-	constructor AMFDataObj(ByteBuffer)[192:196]: java.nio.BufferUnderflowException
ERROR	server	comment	2012-01-05	19:07:52	-	-	-	-	-	71001.271	-	-	-	-	-	-	-	-	constructor AMFDataObj(ByteBuffer)[193:196]: java.nio.BufferUnderflowException
ERROR	server	comment	2012-01-05	19:07:52	-	-	-	-	-	71001.272	-	-	-	-	-	-	-	-	constructor AMFDataObj(ByteBuffer)[195:196]: java.nio.BufferUnderflowException
ERROR	server	comment	2012-01-05	19:07:52	-	-	-	-	-	71001.272	-	-	-	-	-	-	-	-	constructor AMFDataObj(ByteBuffer)[196:196]: java.nio.BufferUnderflowException
2

Are you doing Sanjose Streaming? If not, that is what works. RTMP streaming with this named group is not supported

Richard

3

Zip up and send conf, logs and transcoder template along with the URL with named group.

Include a link to this thread for reference

Richard

4

Remove the “ngrp:” prefix from the StreamNameGroup /Name.

Change this:

<Name>ngrp:channel10_320x240_500K.stream_all</Name>

To this:

<Name>channel10_320x240_500K.stream_all</Name>

The URL that uses the group uses that prefix, as you are doing, but it doesn’t belong in the template.

Richard

5

You just use it in your playback URL. For example, m3u8 url for cupertinostreaming to iOS:

http://[wowza-address]:1935/live/Snabel/ngrp:channel10_320x240_500K.stream_all/playlist.m3u8

Or sanjosestreaming to Flash HTTP (OSMF) player:

http://[wowza-address]:1935/live/Snabel/ngrp:channel10_320x240_500K.stream_all/manifest.f4m

Or smoothstreaming to Silverlight player:

http://[wowza-address]:1935/live/Snabel/ngrp:channel10_320x240_500K.stream_all/Manifest

This does not work in Flash RTMP client. If you want to use Flash Dynamic streaming, take a look at JW Player, and these method for utilizing the Transcoder named group:

http://www.longtailvideo.com/support/jw-player/jw-player-for-flash-v5/16012/setting-up-rtmp-dynamic-streaming

https://www.wowza.com/docs/how-to-use-jw-player-with-adaptive-bitrate-streaming-from-wowza-streaming-engine

Richard

6

yes doing san jose streaming

7

Hi,

I also have a problem with stream name group playing:

when I try to play this link:

http://x.x.x.x:1935/live/ngrp:channel10_320x240_500K.stream_all /Manifest

I get this:

WARN server comment 2012-02-28 13:59:35 - - - - - 280.09 - - - - - - - - HTTPStreamerCupertinoIndexPlaylist.indexFile[live/definst/ngrp:channel10_320x240_500K.stream_all]: MediaList is empty.

WARN server comment 2012-02-28 13:59:35 - - - - - 280.09 - - - - - - - - HTTPStreamerAdapterSmoothStreamer.onManifest: Playlist cound not be parsed: live/ngrp:channel10_320x240_500K.stream_all/Manifest

It’s the first time I use wowza so I think maybe I missed something in the configuration:

I will really appreciate your help with this.

Thanks,

Snabel

8

Here are the Application.xml and live.xml:

Application.xml:

true

live

/usr/local/live

${com.wowza.wms.context.VHostConfigHome}/keys

cupertinostreamingpacketizer, smoothstreamingpacketizer, sanjosestreamingpacketizer

cupertinostreaming,smoothstreaming,sanjosestreaming

transcoder

live.xml

${com.wowza.wms.context.VHostConfigHome}/transcoder/profiles

${com.wowza.wms.context.VHostConfigHome}/transcoder/templates

0

${com.wowza.wms.context.VHostConfigHome}/dvr

append

cupertinostreaming,smoothstreaming,sanjosestreaming

-1

*

*

*

*

digest

none

senderreport

0

75

90000

0

0.0.0.0

127.0.0.1

*

interleave

base

Base

com.wowza.wms.module.ModuleCore

properties

Properties

com.wowza.wms.module.ModuleProperties

logging

Client Logging

com.wowza.wms.module.ModuleClientLogging

flvplayback

FLVPlayback

com.wowza.wms.module.ModuleFLVPlayback

live.xml:

false

720p

mp4:${SourceStreamName}_720p

true

360p

mp4:channel10_320x240_500K.stream_360p

false

240p

mp4:${SourceStreamName}_240p

true

160p

mp4:channel10_320x240_500K.stream_160p

ngrp:channel10_320x240_500K.stream_all

720p

360p

240p

160p

${SourceStreamName}_mobile

240p

160p

9

Hi Richard,

Thanks, now it works :slight_smile:

I’ve another question, where can I find the transcoded streams?

i.e. where I can find this stream:

ngrp:channel10_320x240_500K.stream_all?

Thanks,

Snabel