My site has a video library which is using default silverlight player to play videos. But videos are not playing and the error I am getting is

Media failed to load. This file is in format that is not recognized.

The video files are actually .AVI. So I want to know which video formats can Sharepoint's default silverlight player play?

2 Answers 2


The list of supported media formats for Silverlight player in SharePoint:

  • Windows Media Video (WMV)
  • Windows Media Audio(WMA)
  • MP3
  • MP4

For more details see Supported Media Formats, Protocols, and Log Fields


Media Web Part is a Silverlight control. So, all the formats supported by Silverlight can be played using MWP. Look at this article for details on that: Supported Media Formats, Protocols, and Log Fields.

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