DVD is increasingly showing a strain in providing HD content.

[MikeB]

@ Reasonable

The realtime ingame cutscenes in MGS4 also take up a lot of space. PS3 exclusives make excellent use of Blu-Ray disc while also taking advantage of maximum compression (it makes sense as the Cell can decode faster than the extra time it takes to load from disc).

I think PS3 exclusives are and will take more and more advantage of realtime generated cutscenes, not because this could save space, but because you get a more seamless experience (same assets, better transitions).

God of War 3:

"Everything you see is 100% in-game. All camera features, including motion blur, run real-time in the cinematics and in-game."

"For this game we decided to try and blend in the cinematic sequences with the in-game sequences, so all models and assets are used for cinematics and for in-game.

“The Kratos that you will control will be the same you see in extreme close ups, no smoke and mirrors, no model switching. There is no CG cutscenes like the ones in previous GOW games. What you see in cinematics is what you get in-game, no difference. We didn’t want to have any jarring changes in detail between gameplay and story.”"

This game will take up a lot of Blu-Ray space.