The WM/EncodingTime attribute is the date and time at which the content was encoded.
This attribute is stored in both the library and the digital media file.
CreationDate is an alias for this attribute.
The Windows Media Format SDK constant for this attribute is g_wszWMEncodingTime.
To determine whether you can change the value of this attribute, use the Media.isReadOnlyItem method.
|Windows Media Player 9 Series or later|
Build date: 11/16/2013