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DaVinci42 · 01-10-2006, 09:50 PM

Reasons why Blu-ray movies can look & sound better than HD-DVD.

1) Higher capacity: 50GB vs 30GB

Allows for higher bitrate encoding using less lossy compression. The extra space might actually be useless without item #2.

2) Higher Data transfer rate: 54.0Mbps vs. 36.55Mbps

This allows for for higher quality video & audio. Lossless audio can take up a lot of bandwidth, up to around 18-20Mbps depending on the codec. The limit for video is 40Mbps. So a balancing act still needs to be performed to provide the maximum quality. But the 50% higher data transfer rate can definetly be used.

Just look at the difference between Superbit DVDs & regular editions to see the effects of less compression. Or the 2 disc Extended LOTR vs the regular version.

3) Natively progressive 1080 movie discs.

HD-DVD is natively interlaced like DVDs & needs to be deinterlaced for progressive output. Such deinterlacing can easily introduce artifacts. I guarentee that all new TVs sold in 5-10 years will be progressive scan. Smaller tvs don't need the extra resolution of 1080 & larger TVs will all be 1080p.

01-10-2006, 09:50 PM	#4
DaVinci42 New Member Member since:Jan 2006	Reasons why Blu-ray movies can look & sound better than HD-DVD. 1) Higher capacity: 50GB vs 30GB Allows for higher bitrate encoding using less lossy compression. The extra space might actually be useless without item #2. 2) Higher Data transfer rate: 54.0Mbps vs. 36.55Mbps This allows for for higher quality video & audio. Lossless audio can take up a lot of bandwidth, up to around 18-20Mbps depending on the codec. The limit for video is 40Mbps. So a balancing act still needs to be performed to provide the maximum quality. But the 50% higher data transfer rate can definetly be used. Just look at the difference between Superbit DVDs & regular editions to see the effects of less compression. Or the 2 disc Extended LOTR vs the regular version. 3) Natively progressive 1080 movie discs. HD-DVD is natively interlaced like DVDs & needs to be deinterlaced for progressive output. Such deinterlacing can easily introduce artifacts. I guarentee that all new TVs sold in 5-10 years will be progressive scan. Smaller tvs don't need the extra resolution of 1080 & larger TVs will all be 1080p. Last edited by DaVinci42; 01-10-2006 at 09:55 PM.