# \[mpeg-dash\] adaptive streaming error **URL:** \ **Category:** Wowza Streaming Engine\ **Created:** [March 19, 2015, 2:38pm UTC](https://community.wowza.com/t/mpeg-dash-adaptive-streaming-error/43567 "2015-03-19T14:38:49Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Larry\_Kim](https://avatars.discourse-cdn.com/v4/letter/l/97f17d/32.png) [@Larry\_Kim](https://community.wowza.com/u/Larry_Kim)\ **Post date:** [March 19, 2015, 2:38pm UTC](https://community.wowza.com/t/mpeg-dash-adaptive-streaming-error/43567/1 "2015-03-19T14:38:49Z")
Hi, My company is using Wowza streaming engine(version 4.1.1) on AWS. I’ve got some weird problem on the adaptive streaming(mpeg-dash). The streaming url is following. [http://54.65.203.47:1935/vod/smil:bad.smil/manifest.mpd](http://54.65.203.47:1935/vod/smil:bad.smil/manifest.mpd) Upper streaming video always stops during playing on the wowza test player. Seems the error occurs at the loading time of the different bit-rate chunk. (from a0r0 to a0r1) - access log : [https://dl.dropboxusercontent.com/u/5284271/wowzastreamingengine\_access.log.zip](https://dl.dropboxusercontent.com/u/5284271/wowzastreamingengine_access.log.zip) - error log : [https://dl.dropboxusercontent.com/u/5284271/wowzastreamingengine\_error.log.zip](https://dl.dropboxusercontent.com/u/5284271/wowzastreamingengine_error.log.zip) But without smil file always fine. - [http://54.65.203.47:1935/vod/mp4:bad\_high.mp4/manifest.mpd](http://54.65.203.47:1935/vod/mp4:bad_high.mp4/manifest.mpd) - [http://54.65.203.47:1935/vod/mp4:bad\_low.mp4/manifest.mpd](http://54.65.203.47:1935/vod/mp4:bad_low.mp4/manifest.mpd) Following is the console error log on the wowza test player. ![](https://s3-ap-northeast-1.amazonaws.com/dev-img.koomvr.com/img/error/wowza_chunk_error.png) ---
**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:** [March 18, 2015, 11:10pm UTC](https://community.wowza.com/t/mpeg-dash-adaptive-streaming-error/43567/2 "2015-03-18T23:10:33Z")
Hi, Each of the files mentioned in your smil file need to be keyframe aligned. Will the smil playback well using the Adobe HDS test player? Best regards, Daren ---
**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:** [March 19, 2015, 9:20pm UTC](https://community.wowza.com/t/mpeg-dash-adaptive-streaming-error/43567/3 "2015-03-19T21:20:38Z")
Hi Larry, Thanks for the additional info. Let’s continue troubleshooting this in the ticket you opened, ticket #121813 Daren ---
**Author:** ![Larry\_Kim](https://avatars.discourse-cdn.com/v4/letter/l/97f17d/32.png) [@Larry\_Kim](https://community.wowza.com/u/Larry_Kim)\ **Post date:** [March 19, 2015, 4:17pm UTC](https://community.wowza.com/t/mpeg-dash-adaptive-streaming-error/43567/4 "2015-03-19T16:17:00Z")
Hi Daren, Thanks for your prompt reply. It works fine on the Adobe HDS test player with following streaming url. [http://54.65.203.47:1935/vod/smil:bad.smil/manifest.f4m](http://54.65.203.47:1935/vod/smil:bad.smil/manifest.f4m) But I need to play the adaptive mpeg-dash streaming not the HDS streaming on an android app. I used the FFmpeg for converting and I didn’t add keyint option for setting keyframe interval for each mp4 file. It might the default value 250. Even after setting keyint as 250 the error still occurs. I also found some confusing thing with testing smil file. It always works with smil file that only include each one video. But the error occurs when I use two videos in one smil file. - high bit-rate video : [http://dev-vod.koomvr.com/video\_e514d2db-25ac-42b7-b6de-812b15834f4a\_03.mp4](http://dev-vod.koomvr.com/video_e514d2db-25ac-42b7-b6de-812b15834f4a_03.mp4) - low bit-rate video : [http://dev-vod.koomvr.com/video\_e514d2db-25ac-42b7-b6de-812b15834f4a\_03\_low.mp4](http://dev-vod.koomvr.com/video_e514d2db-25ac-42b7-b6de-812b15834f4a_03_low.mp4) 1. high bit-rate only smil - always fine - streaming url : [http://54.65.203.47:1935/vod/smil:bad\_high.smil/manifest.mpd](http://54.65.203.47:1935/vod/smil:bad_high.smil/manifest.mpd) 1. low bit-rate only smil - always fine - streaming url : [http://54.65.203.47:1935/vod/smil:bad\_low.smil/manifest.mpd](http://54.65.203.47:1935/vod/smil:bad_low.smil/manifest.mpd) 1. high & low bit-rate smil - always fail - streaming url : [http://54.65.203.47:1935/vod/smil:bad.smil/manifest.mpd](http://54.65.203.47:1935/vod/smil:bad.smil/manifest.mpd) 1. Wowza example - works fine - streaming url : [http://54.65.203.47:1935/vod/smil:bigbuckbunny.smil/manifest.mpd](http://54.65.203.47:1935/vod/smil:bigbuckbunny.smil/manifest.mpd) -Larry ---
**Author:** ![Larry\_Kim](https://avatars.discourse-cdn.com/v4/letter/l/97f17d/32.png) [@Larry\_Kim](https://community.wowza.com/u/Larry_Kim)\ **Post date:** [March 20, 2015, 1:47pm UTC](https://community.wowza.com/t/mpeg-dash-adaptive-streaming-error/43567/5 "2015-03-20T13:47:13Z")
Hi Daren, Thanks for your concern about this issue. How can I access the ticket #121813? Is there any web url for that ticket or should I use just email? And I also posted new additional info on [[mpeg-dash] some adaptive streaming always stop during playing.](http://community.wowza.com/t/-/43569) - Larry ---
**Author:** ![Larry\_Kim](https://avatars.discourse-cdn.com/v4/letter/l/97f17d/32.png) [@Larry\_Kim](https://community.wowza.com/u/Larry_Kim)\ **Post date:** [March 23, 2015, 6:35pm UTC](https://community.wowza.com/t/mpeg-dash-adaptive-streaming-error/43567/6 "2015-03-23T18:35:51Z")
It was the problem of keyframe alignment problem. Finally I could solve this problem with the ‘-sc\_threshold 0’ option of FFMpeg. Refer from [Keyframe alignment problem with Wowza and FFMPEG](http://community.wowza.com/t/-/39715) -Larry ---
**Author:** ![Ranosys\_Ranosys](https://avatars.discourse-cdn.com/v4/letter/r/a3d4f5/32.png) [@Ranosys\_Ranosys](https://community.wowza.com/u/Ranosys_Ranosys)\ **Post date:** [March 23, 2015, 4:12pm UTC](https://community.wowza.com/t/mpeg-dash-adaptive-streaming-error/43567/7 "2015-03-23T16:12:22Z")
Thanks for the info.