OP - most discs should tell you on the back which encode is being used. Warner uses VC-1 for both its HD DVD and Blu-ray encodes. Microsoft appears to be doing all of Universal's encodes, which is why they're using VC-1. MPEG-2 encodes can also be done in real time. They used MPEG-2 for the Blu-ray release because they knew the bandwidth headroom would allow them to do so. Paramount used AVC/MPEG-4 for their HD DVD release of Babel. A 24/28 5.1 PCM track, like the ones found on BVHE's releases, runs in between 6-7 Mbps. The reason HD DVD doesn't use MPEG-2 is because it only has 36.55 Mbps bandwidth, whereas Blu-ray has 54.825 Mbps.īlu-ray's video data alone can reach 40 Mbps, leaving 14+ Mbps for audio alone. There's a lot of confusion - MPEG-2, when given room to breathe, is just as good as the other codecs.
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