# stream name group playing error **URL:** \ **Category:** Wowza Streaming Engine\ **Created:** [January 5, 2012, 11:28am UTC](https://community.wowza.com/t/stream-name-group-playing-error/33886 "2012-01-05T11:28:04Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Andy\_Schnadarle](https://avatars.discourse-cdn.com/v4/letter/a/8491ac/32.png) [@Andy\_Schnadarle](https://community.wowza.com/u/Andy_Schnadarle)\ **Post date:** [January 5, 2012, 11:28am UTC](https://community.wowza.com/t/stream-name-group-playing-error/33886/1 "2012-01-05T11:28:04Z")
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](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. ```auto 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 ``` ---
**Author:** ![Richard\_Lanham](https://avatars.discourse-cdn.com/v4/letter/r/c68b51/32.png) [@Richard\_Lanham](https://community.wowza.com/u/Richard_Lanham)\ **Post date:** [January 5, 2012, 11:23pm UTC](https://community.wowza.com/t/stream-name-group-playing-error/33886/2 "2012-01-05T23:23:24Z")
Are you doing Sanjose Streaming? If not, that is what works. RTMP streaming with this named group is not supported Richard ---
**Author:** ![Richard\_Lanham](https://avatars.discourse-cdn.com/v4/letter/r/c68b51/32.png) [@Richard\_Lanham](https://community.wowza.com/u/Richard_Lanham)\ **Post date:** [January 6, 2012, 9:21pm UTC](https://community.wowza.com/t/stream-name-group-playing-error/33886/3 "2012-01-06T21:21:22Z")
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 ---
**Author:** ![Richard\_Lanham](https://avatars.discourse-cdn.com/v4/letter/r/c68b51/32.png) [@Richard\_Lanham](https://community.wowza.com/u/Richard_Lanham)\ **Post date:** [February 28, 2012, 4:00pm UTC](https://community.wowza.com/t/stream-name-group-playing-error/33886/4 "2012-02-28T16:00:30Z")
Remove the “ngrp:” prefix from the StreamNameGroup /Name. Change this: ```auto ngrp:channel10_320x240_500K.stream_all ``` To this: ```auto channel10_320x240_500K.stream_all ``` The URL that uses the group uses that prefix, as you are doing, but it doesn’t belong in the template. Richard ---
**Author:** ![Richard\_Lanham](https://avatars.discourse-cdn.com/v4/letter/r/c68b51/32.png) [@Richard\_Lanham](https://community.wowza.com/u/Richard_Lanham)\ **Post date:** [February 29, 2012, 2:45pm UTC](https://community.wowza.com/t/stream-name-group-playing-error/33886/5 "2012-02-29T14:45:23Z")
You just use it in your playback URL. For example, m3u8 url for cupertinostreaming to iOS: ```auto http://[wowza-address]:1935/live/Snabel/ngrp:channel10_320x240_500K.stream_all/playlist.m3u8 ``` Or sanjosestreaming to Flash HTTP (OSMF) player: ```auto http://[wowza-address]:1935/live/Snabel/ngrp:channel10_320x240_500K.stream_all/manifest.f4m ``` Or smoothstreaming to Silverlight player: ```auto 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](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](https://www.wowza.com/docs/how-to-use-jw-player-with-adaptive-bitrate-streaming-from-wowza-streaming-engine) Richard ---
**Author:** ![Andy\_Schnadarle](https://avatars.discourse-cdn.com/v4/letter/a/8491ac/32.png) [@Andy\_Schnadarle](https://community.wowza.com/u/Andy_Schnadarle)\ **Post date:** [January 6, 2012, 9:44am UTC](https://community.wowza.com/t/stream-name-group-playing-error/33886/6 "2012-01-06T09:44:53Z")
yes doing san jose streaming ---
**Author:** ![dana\_kabiya](https://avatars.discourse-cdn.com/v4/letter/d/ec9cab/32.png) [@dana\_kabiya](https://community.wowza.com/u/dana_kabiya)\ **Post date:** [February 28, 2012, 4:14am UTC](https://community.wowza.com/t/stream-name-group-playing-error/33886/7 "2012-02-28T04:14:54Z")
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](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 ---
**Author:** ![dana\_kabiya](https://avatars.discourse-cdn.com/v4/letter/d/ec9cab/32.png) [@dana\_kabiya](https://community.wowza.com/u/dana_kabiya)\ **Post date:** [February 28, 2012, 4:23am UTC](https://community.wowza.com/t/stream-name-group-playing-error/33886/8 "2012-02-28T04:23:16Z")
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 H.264 default -1 fit-height 1280 720 main 1300000 false 60 false 0 ${com.wowza.wms.context.VHostConfigHome}/content/wowzalogo.png 100 5 5 ${ImageWidth} ${ImageHeight} left,top AAC 96000 true 360p mp4:channel10\_320x240\_500K.stream\_360p H.264 default -1 fit-height 640 360 main 850000 false 60 false 0 ${com.wowza.wms.context.VHostConfigHome}/content/wowzalogo.png 100 5 5 ${ImageWidth} ${ImageHeight} left,top AAC 96000 false 240p mp4:${SourceStreamName}\_240p H.264 default -1 fit-height 360 240 baseline 350000 false 60 false 0 ${com.wowza.wms.context.VHostConfigHome}/content/wowzalogo.png 100 5 5 ${ImageWidth} ${ImageHeight} left,top AAC 96000 true 160p mp4:channel10\_320x240\_500K.stream\_160p H.264 default -1 fit-height 284 160 baseline 200000 false 60 false 0 ${com.wowza.wms.context.VHostConfigHome}/content/wowzalogo.png 100 5 5 ${ImageWidth} ${ImageHeight} left,top AAC 96000 false false 0 ${com.wowza.wms.context.VHostConfigHome}/content/wowzalogo.png 100 5 5 ${ImageWidth} ${ImageHeight} left,top ngrp:channel10\_320x240\_500K.stream\_all 720p 360p 240p 160p ${SourceStreamName}\_mobile 240p 160p ---
**Author:** ![dana\_kabiya](https://avatars.discourse-cdn.com/v4/letter/d/ec9cab/32.png) [@dana\_kabiya](https://community.wowza.com/u/dana_kabiya)\ **Post date:** [February 28, 2012, 10:22pm UTC](https://community.wowza.com/t/stream-name-group-playing-error/33886/9 "2012-02-28T22:22:43Z")
Hi Richard, Thanks, now it works 🙂 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