I am trying to serve MP4 Video content from Azure Blob Storage. I can get the video to play in modern browsers by ensuring that the Blob\'s Content Type is set to vid
You may try setting the default version for your storage account to 2011-08-18: http://blogs.msdn.com/b/windowsazurestorage/archive/2011/09/15/windows-azure-blobs-improved-http-headers-for-resume-on-download-and-a-change-in-if-match-conditions.aspx. It improves a couple things around range requests (probably what progressive download in your browser is doing). I haven't heard anything specific about video playback, but it can't hurt to try. :-)