# Mpeg Dash problem

**URL:** <https://community.wowza.com/t/mpeg-dash-problem/37999>\
**Category:** Wowza Streaming Engine\
**Created:** [June 13, 2014, 1:19am UTC](https://community.wowza.com/t/mpeg-dash-problem/37999 "2014-06-13T01:19:02Z")\
**Posts on this page:** 10\
**Page:** 1

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**Author:** ![Serkan\_Kaya](https://avatars.discourse-cdn.com/v4/letter/s/839c29/32.png) [@Serkan\_Kaya](https://community.wowza.com/u/Serkan_Kaya)\
**Post date:** [June 13, 2014, 1:19am UTC](https://community.wowza.com/t/mpeg-dash-problem/37999/1 "2014-06-13T01:19:02Z")

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Hi,

I got this error when i try to validate mpeg dash stream. Stream link is [http://185.28.3.4/live/startv/manifest.mpd](http://185.28.3.4/live/startv/manifest.mpd). I produce it with flash media live encoder. I appreciate your help

Validator page : [http://www-itec.uni-klu.ac.at/dash/?page\_id=605#](http://www-itec.uni-klu.ac.at/dash/?page_id=605)

Start Schematron validation

===========================

\<svrl:failed-assert test=“if (not(@id) and ancestor:💨MPD/@type = ‘dynamic’) then false() else true()”

location="/_[local-name()=‘MPD’ and namespace-uri()=‘urn:mpeg:dash:schema:mpd:2011’]/_[local-name()=‘Period’ and namespace-uri()=‘urn:mpeg:dash:schema:mpd:2011’]"\>

svrl:textIf the MPD is dynamic the Period element shall have an id.\</svrl:text\>

\</svrl:failed-assert\>

Schematron validation not successful – DASH is not valid!

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<div class="post-metadata">

**Author:** ![Matt\_Young](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/matt_young/32/389_2.png) [@Matt\_Young](https://community.wowza.com/u/Matt_Young)\
**Post date:** [June 13, 2014, 6:13am UTC](https://community.wowza.com/t/mpeg-dash-problem/37999/2 "2014-06-13T06:13:17Z")

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Can you share your “live” application configuration? I assume you aren’t able to playback via dash player?

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**Author:** ![Daren\_Johnson](https://avatars.discourse-cdn.com/v4/letter/d/ee59a6/32.png) [@Daren\_Johnson](https://community.wowza.com/u/Daren_Johnson)\
**Post date:** [June 13, 2014, 2:59pm UTC](https://community.wowza.com/t/mpeg-dash-problem/37999/3 "2014-06-13T14:59:15Z")

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Hi,

We’ve seen success with the combination you have, and normally works pretty well.

Try time syncing server and your client to the same time source. It looks like the server clock is off by about 3 minutes.

See if that helps.

Daren

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**Author:** ![Daren\_Johnson](https://avatars.discourse-cdn.com/v4/letter/d/ee59a6/32.png) [@Daren\_Johnson](https://community.wowza.com/u/Daren_Johnson)\
**Post date:** [June 13, 2014, 3:14pm UTC](https://community.wowza.com/t/mpeg-dash-problem/37999/4 "2014-06-13T15:14:53Z")

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Hi,

Additionally the validation error you were seeing was fixed in a recent update.

The latest update is [available here.](https://www.wowza.com/docs/wowza-streaming-engine-software-updates)

Daren

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<div class="post-metadata">

**Author:** ![Daren\_Johnson](https://avatars.discourse-cdn.com/v4/letter/d/ee59a6/32.png) [@Daren\_Johnson](https://community.wowza.com/u/Daren_Johnson)\
**Post date:** [December 8, 2015, 11:45pm UTC](https://community.wowza.com/t/mpeg-dash-problem/37999/5 "2015-12-08T23:45:18Z")

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Hi,

The stream is no longer active so it’s difficult to verify and troubleshoot the issue.

The sample.mp4 using the vod application from your URL plays successfully in MPEG-DASH players

and passes the dash validation.

Daren

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<div class="post-metadata">

**Author:** ![Serkan\_Kaya](https://avatars.discourse-cdn.com/v4/letter/s/839c29/32.png) [@Serkan\_Kaya](https://community.wowza.com/u/Serkan_Kaya)\
**Post date:** [June 13, 2014, 10:28am UTC](https://community.wowza.com/t/mpeg-dash-problem/37999/6 "2014-06-13T10:28:09Z")

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No it doesn’t play. I’m using default live application configuration, i didn’t change anything. Vod files (sample.mp4 in contents) pass the test.

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<div class="post-metadata">

**Author:** ![Serkan\_Kaya](https://avatars.discourse-cdn.com/v4/letter/s/839c29/32.png) [@Serkan\_Kaya](https://community.wowza.com/u/Serkan_Kaya)\
**Post date:** [June 14, 2014, 10:41am UTC](https://community.wowza.com/t/mpeg-dash-problem/37999/7 "2014-06-14T10:41:28Z")

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Hi,

I updated wowza now it passes the test it plays wery well. Thanks Daren

Serkan

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**Author:** ![Denis\_Santos](https://avatars.discourse-cdn.com/v4/letter/d/2acd7d/32.png) [@Denis\_Santos](https://community.wowza.com/u/Denis_Santos)\
**Post date:** [March 4, 2016, 3:56pm UTC](https://community.wowza.com/t/mpeg-dash-problem/37999/8 "2016-03-04T15:56:41Z")

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Hello people, I need help for the same thing, following my link now live,

[http://revelmedia.trafficmanager.net/live/10000\_RevelLogin/smil:RevelLogin1\_all.smil/manifest.mpd](http://revelmedia.trafficmanager.net/live/10000_RevelLogin/smil:RevelLogin1_all.smil/manifest.mpd)

In vod validation is ok, but the live has abug on skematron. Because of this, something happens in the video buffer that it not be renewed, and there the transmission stops after the buffer is depleted and not renew, I’m using 4.4.1 wowza an azure cloud. please help me. the link had been live in the coming hours

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**Author:** ![Yancey\_Chen](https://avatars.discourse-cdn.com/v4/letter/y/54ee81/32.png) [@Yancey\_Chen](https://community.wowza.com/u/Yancey_Chen)\
**Post date:** [December 3, 2015, 6:09pm UTC](https://community.wowza.com/t/mpeg-dash-problem/37999/9 "2015-12-03T18:09:51Z")

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Hi , I still have the same problem too , but I already upgrade to newest version 4.3.0.01 build16210

This is my dash url [http://54.179.140.239:1935/live/livestream/manifest.mpd](http://54.179.140.239:1935/live/livestream/manifest.mpd)

Validator page : [http://www-itec.uni-klu.ac.at/dash/?page\_id=605](http://www-itec.uni-klu.ac.at/dash/?page_id=605)

Start Schematron validation

===========================

\<svrl:failed-assert test=“if (@type=’dynamic’ and not(@id)) then false() else true()”

location="/\*[local-name()=‘MPD’ and namespace-uri()=‘urn:mpeg:dash:schema:mpd:2011’]"\>

svrl:textIf the MPD type is dynamic, the id shall be present \</svrl:text\>

\</svrl:failed-assert\>

Schematron validation not successful – DASH is not valid!

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<div class="post-metadata">

**Author:** ![Andy\_Engberson](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/andy_engberson/32/392_2.png) [@Andy\_Engberson](https://community.wowza.com/u/Andy_Engberson)\
**Post date:** [March 22, 2016, 7:52am UTC](https://community.wowza.com/t/mpeg-dash-problem/37999/10 "2016-03-22T07:52:55Z")

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I do see that you have submitted a support request and it looks like you are testing the latest patch. Do reply here or to the support ticket letting us know how that solution is working. Thanks. Do let us know if you have further questions.

Support Ticket Reference # 161250

Andy