PLEASE NOTE: This article only applies to clients with the Media Suite 2.0 tools.  If your site was delivered prior to August 2010, you may want to have us install these tools for you.  Submit a ticket and we'll be happy to set them up.

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Problem:
When you place an MP4 video file into a media program, one of the following results occurs:

• The video does not play at all

• The audio plays, but no image is visible

• The video plays when you browse directly to the MP4 file (http://www.mysite.com/uploads/myfile.mp4), but it does not play within the embedded player on your Website

These conditions all indicate that there is a problem with the encoding of the video file itself.  Web browsers, mobile devices, and the Flash player are all very strict in the types of videos they can play.  The MP4 format wrapper does not guarantee that its contents will play everywhere.

Solution:
Review your video encoding workflow and ensure that you are using the following settings:

• File extension is MP4
• Codec is H.264 (MPEG-4 Part 10)
• Profile is set to "Baseline"
• Level set to 3.0 (this is the maximum supported by iPhone 3GS)

For more information: http://kb2.adobe.com/cps/402/kb402866.html