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					Originally Posted by  FIRSTKLAS
					 
				 
				Ah. I wonder why Avex even bothered with a blu-ray version then if most of the content is SD. The cost to upscale, filter, and remaster the videos to the format doesn't seem to be worth it. 
(Though I guess they can also use the new masters for broadcasting, but still...   )  
			
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 As far as I know the bluray version is only slightly more expensive than the DVD version so I see this as being a collection of all of Ayumi's PVs in one neat box rather than a quality thing. It's like A COMPLETE - PV version - to me haha
And putting them on bluray enables them to use less discs and have higher audio quality on all the videos 

 (The audio quality is definitely improved compared to some DVD-versions! Even in pre-HD videos, and the colours seem to be a bit better in some, I'm not sure if that's a quality thing or just filters applied to them)
And I doubt they had much cost to upscale and master the videos, it would have been costy had they taken from the original sources but it seems they didn't (many are probably not even kept anymore, anyways)