Wowza Community

wowzaplayer problem

A problem occurs occasionally when i want to play vod by wowzaplayer. Here is my error infomation:

00:00:00.000 INFO: Log: Log times are relative. Starting at UTC: 1543978028548
wowzaplayer.js:5 00:00:00.000 INFO: AssetPlayerBase: Wowza Player 1.1.13 build:8743 (javascript)
wowzaplayer.js:5 00:00:00.002 INFO: AssetPlayerBase: License Key: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
wowzaplayer.js:5 00:00:00.004 INFO: AssetPlayerBase: init
wowzaplayer.js:5 00:00:00.033 INFO: AssetPlayerBase: prepare
wowzaplayer.js:5 00:00:00.035 ERROR: PlayerStreamerBase: fatal error msg:Media Source Extensions unavailable err:null
wowzaplayer.js:5 00:00:00.035 WARN: AssetPlayerBase: Error occurred: Media Source Extensions unavailable

ps: I am using a “Wowza Streaming Engine Developer Trial” for test.

so, how can i figure it out ?

Hello @joey li, sorry you are having an issue. The best approach to a resolution is to have our engineers take a look at your configuration and run some tests. Even though you have a trial, you can still submit a support ticket and receive assistance:


Usually, media source extensions errors happen if a client is using Internet Explorer 11 on Windows 7 to play back content using our Wowza Player and does not have Flash installed on their computer. IE 11 on Windows 7 does not support Media Source Extensions and must use Flash to decode H.264 content. We have a detailed description of which browsers and operating systems support Media Source Extensions here:

Kind regards,

Alberto Cabaleiro

Wowza Support Engineer