Silverlight supports for DRM protected subtitles
Note
Silverlight has retired and is officially out of support. For more information, see Silverlight End of Support.
This article explains a problem where it doesn't show the subtitles when you play a Digital Rights Management (DRM) protected video in Microsoft Silverlight.
Original product version: Silverlight
Original KB number: 2831298
Symptoms
You're playing a DRM protected video in Silverlight, but it doesn't show the subtitles. Both the video and its subtitles are encrypted with PlayReady or Windows Media Rights Manager 10.
Cause
Silverlight doesn't display DRM protected subtitles.
More information
Subtitling is a synchronized, optional additional format used to deliver text content of an audio stream. Typically, subtitles are displayed through a client-side media player.