Fei-Hung said: can't they play the cutscenes as a video format like Dix X which takes up less space? allMS will need to do then is give a software update to allow 360 users to play divx |
all cutscenes are compressed one ps3 too, uncompressed HD video data is insane data amount (each 1080p picture takes 4-5mb in uncompressed hd, 60 uncompressed pics per second would mean 200-300 mb data per second).
There is lossless compression too, but that doesn't reduce data amounts enough. so all video codecs have losses, it just depends on the quality of the codec how good it detects which parts of the picture are more important and where it can sacrifice quality better.
actually div x isn't such a great codec yes its has better compression rates than mpeg2 thats used on dvds but if you move up from sd resolutions to 1080p you are getting about 8 times the data. There are a lot more improved codecs around now like the MPEG4 AVC (H.264) thats one of the possible codecs for video on a blu ray disk which actually needs substantially less data than divx for same quality.
Also Sound takes a noticable amount of space on the disks if you want to keep it in full 7.1.
My guess is that SE is allready compressing with a good codec for the PS3 so they will have to look at even higher compression or lowering quality unless they want to use same amount on data on both hd consoles (and 4-5 disks on xbox).
If i would be in the situation of SE i would probably reduce resolution in which the prerendered cutscenes are stored down to 720p and upscale them for display. That should reduce the space needed for these sequences by the factor 2-3 and i guess the visual differences should only be noticable in direct comparisson.