1446 Microsoft Expression Media 2 Presentation Proprietary cataloguing program to manage photo and video assets. 1 Digital Preservation Department / The National Archives 14 Jul 2014 14 Jul 2014 fmt/647 PUID ivc File extension 975 Microsoft Expression Media 2 BOF: 025i (Offset 4) EOF: Svar{8-54}025i(Max Offset 8) 1 Absolute from BOF 4 30323569 1 Absolute from EOF 4 53566172{8-54}30323569 Is previous version of 1447 Media View Pro