HTTPStreamerMPEGDashLiveIndex.indexFile

Wowza Streaming Engine
1

Guys,

We’ve got a stream coming from a third party which we’re using the Wowza Stream Engine’s MPEG-DASH Streaming Packetizer. On occasion we recieve a 404 error where the end client can’t find the manifest.mpd file. When I look at the error logs I see the following (see below). Please inform me as to what attributes, properties, etc I can adjust on the Wowza Stream Engine in order to remedy this issue.

WARNservercomment2018-05-0315:16:04-----15110.988--------MPEGDashWriterHandler.startChunk[chunkIdHandler.onAssignChunkId][live/_definst_/cogoStream_source]: repeated chunk id 38 at timecode 113988 WARNservercomment2018-05-0315:16:06-----15113.692--------MPEGDashWriterHandler.startChunk[chunkIdHandler.onAssignChunkId][live/_definst_/cogoStream]: chunk ids skipping forward possibly due to dropped frames; previous chunk id: 38, nextChunkId: 40 at timecode 117659 

WARNservercomment2018-05-0315:16:07-----15114.896--------MPEGDashWriterHandler.startChunk[chunkIdHandler.onAssignChunkId][live/_definst_/cogoStream_source]: chunk ids skipping forward possibly due to dropped frames; previous chunk id: 38, nextChunkId: 40 at timecode 117659 ERRORservercomment2018-05-0315:16:10-----128.72--------HTTPStreamerMPEGDashLiveIndex.indexFile[live/_definst_/cogoStream2160.smil] : java.lang.NullPointerException|at com.wowza.wms.httpstreamer.mpegdashstreaming.livestreampacketizer.MPEGDashWriterHandler.indexStream(MPEGDashWriterHandler.java:2544)|at com.wowza.wms.httpstreamer.mpegdashstreaming.livestreampacketizer.LiveStreamPacketizerMPEGDash.indexStream(LiveStreamPacketizerMPEGDash.java:224)|at com.wowza.wms.httpstreamer.mpegdashstreaming.file.HTTPStreamerMPEGDashLiveIndexItem.indexStream(HTTPStreamerMPEGDashLiveIndexItem.java:354)|at com.wowza.wms.httpstreamer.mpegdashstreaming.file.HTTPStreamerMPEGDashLiveIndex.indexFile(HTTPStreamerMPEGDashLiveIndex.java:444)|at com.wowza.wms.httpstreamer.mpegdashstreaming.httpstreamer.HTTPStreamerSessionMPEGDash.createIndexLive(HTTPStreamerSessionMPEGDash.java:85)| 

ERRORservercomment2018-05-0315:16:11-----129.289--------HTTPStreamerMPEGDashLiveIndex.indexFile[live/_definst_/cogoStream2160.smil] : java.lang.NullPointerException|at com.wowza.wms.httpstreamer.mpegdashstreaming.livestreampacketizer.MPEGDashWriterHandler.indexStream(MPEGDashWriterHandler.java:2544)|at com.wowza.wms.httpstreamer.mpegdashstreaming.livestreampacketizer.LiveStreamPacketizerMPEGDash.indexStream(LiveStreamPacketizerMPEGDash.java:224)|at com.wowza.wms.httpstreamer.mpegdashstreaming.file.HTTPStreamerMPEGDashLiveIndexItem.indexStream(HTTPStreamerMPEGDashLiveIndexItem.java:354)|at com.wowza.wms.httpstreamer.mpegdashstreaming.file.HTTPStreamerMPEGDashLiveIndex.indexFile(HTTPStreamerMPEGDashLiveIndex.java:444)|at com.wowza.wms.httpstreamer.mpegdashstreaming.httpstreamer.HTTPStreamerSessionMPEGDash.createIndexLive(HTTPStreamerSessionMPEGDash.java:85)| 

ERRORservercomment2018-05-0315:16:11-----129.852--------HTTPStreamerMPEGDashLiveIndex.indexFile[live/_definst_/cogoStream2160.smil] : java.lang.NullPointerException|at com.wowza.wms.httpstreamer.mpegdashstreaming.livestreampacketizer.MPEGDashWriterHandler.indexStream(MPEGDashWriterHandler.java:2544)|at com.wowza.wms.httpstreamer.mpegdashstreaming.livestreampacketizer.LiveStreamPacketizerMPEGDash.indexStream(LiveStreamPacketizerMPEGDash.java:224)|at com.wowza.wms.httpstreamer.mpegdashstreaming.file.HTTPStreamerMPEGDashLiveIndexItem.indexStream(HTTPStreamerMPEGDashLiveIndexItem.java:354)|at com.wowza.wms.httpstreamer.mpegdashstreaming.file.HTTPStreamerMPEGDashLiveIndex.indexFile(HTTPStreamerMPEGDashLiveIndex.java:444)|at com.wowza.wms.httpstreamer.mpegdashstreaming.httpstreamer.HTTPStreamerSessionMPEGDash.createIndexLive(HTTPStreamerSessionMPEGDash.java:85)| 

ERRORservercomment2018-05-0315:16:12-----130.42--------HTTPStreamerMPEGDashLiveIndex.indexFile[live/_definst_/cogoStream2160.smil] : java.lang.NullPointerException|at com.wowza.wms.httpstreamer.mpegdashstreaming.livestreampacketizer.MPEGDashWriterHandler.indexStream(MPEGDashWriterHandler.java:2544)|at com.wowza.wms.httpstreamer.mpegdashstreaming.livestreampacketizer.LiveStreamPacketizerMPEGDash.indexStream(LiveStreamPacketizerMPEGDash.java:224)|at com.wowza.wms.httpstreamer.mpegdashstreaming.file.HTTPStreamerMPEGDashLiveIndexItem.indexStream(HTTPStreamerMPEGDashLiveIndexItem.java:354)|at com.wowza.wms.httpstreamer.mpegdashstreaming.file.HTTPStreamerMPEGDashLiveIndex.indexFile(HTTPStreamerMPEGDashLiveIndex.java:444)|at com.wowza.wms.httpstreamer.mpegdashstreaming.httpstreamer.HTTPStreamerSessionMPEGDash.createIndexLive(HTTPStreamerSessionMPEGDash.java:85)| 

WARNservercomment2018-05-0315:16:13-----15120.908--------MPEGDashWriterHandler.endChunk[live/_definst_/cogoStream_360p]: Stream start time calculation is off by 2337ms from original value. Changing stream start date from "Thu May 03 15:14:12 PDT 2018" to "Thu May 03 15:14:09 PDT 2018" WARNservercomment2018-05-0315:16:13-----15120.909--------MPEGDashWriterHandler.endChunk[live/_definst_/cogoStream_240p]: Stream start time calculation is off by 2336ms from original value. Changing stream start date from "Thu May 03 15:14:12 PDT 2018" to "Thu May 03 15:14:09 PDT 2018"
2

hi Steven Smith , which wowza version do you use ?

3

The server is: 4.7.5

4

WOWZA ANNOUNCES SUPPORT OF MPEG-DASH nDVR FOR LIVE STREAMING

**New playback options available with update of Wowza Streaming Engine version 4.7.6

The Wowza nDVR feature enables you to record a live stream with Wowza Streaming Engine while simultaneously allowing users to play or pause the live stream, rewind it to a previously recorded point, or resume viewing at the current live point. Wowza Streaming Engine 4.7.6 adds support to record MPEG-DASH live streams with the nDVR feature.

See our quick start guide here:

https://www.wowza.com/docs/wowza-ndvr-quick-start-guide