On Thursday 19 April 2007 09:55, Dieter wrote: > > Well, some basic questions to ask ourselves: > > 1) What will it do? I personally think that a reasonable aim is decoding > > video, hopefully even 720p/i or possibly 1080p/i, in real time (30+ > > fps), > > while also providing a simple framebuffer and possibly audio. If > > video is > > the way to go, what formats? > > 1080p > Mpeg 1, 2 up to 80 Mbps > Mpeg 4 up to 20 Mbps ( Is this really the worst case? Seems low. ) > H.264 up to 40 Mbps
Are these right? According to my PS3 info display when playing a BluRay disk (XMen-3, Mpeg-2 encoded I believe), the bandwidth is 20Mbps. That's playing at 1080i. Assuming 1080p needs twice the bandwidth, that makes around 40Mbps. Even for MPEG2. So your figures seem a little high... I'm not sure how accurate they are, but figures I've seen show DB tops out at 48Mbps, and HDDVD at 30Mbps... (HDDVD uses mpeg4, while BD is mpeg2 IIUC). [Someone correct me if I'm wrong here]/ H
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