Every week Home Media Magazine reports the latest Nielson VideoScan numbers for the Blu-ray vs. HD DVD battle. They include three figures: Weekly, Year-to-date, and Since Inception. Weekly numbers examine discs sold at retail over the course of just the current week, the YTD numbers look at sales from the first week ending in 2007 to the present, and the since inception numbers show the relative performance of Blu-ray and HD DVD discs since the formats' respective births.
Nielson VideoScan Data for Week Ending 5/6/07
Source: Nielson VideoScan via http://www.homemediamagazine.com/
Weekly sales: Blu-ray leads HD DVD 60% to 40%, 100:66.7, or 1.5:1
YTD sales: Blu-ray leads HD DVD 68% to 32%, 100:47.1, or 2.13:1
Since Inception sales: Blu-ray leads HD DVD 57% to 43%, 100:75.4, or 1.33:1
One thing worth mentioning is that while the weekly percentage was greater than the cumulative (since inception) percentage, yet the since inception percentage moved a point in HD DVD's favor. Since that isn't possible, there's something odd going on with the numbers. My guess is that the FirstAlert data that these graphs go by ended up being slightly off at some point and an adjustment was made to the data. Either that or Home Media Magazine can't figure out how to round percentages correctly from one week to the next.
Nielson VideoScan Top 10 for Week Ending 5/6/07
Source: Nielson VideoScan via http://www.homemediamagazine.com/
To interpret this new chart, understand that for every 100 copies of the top title (rank 1) sold, stores sold the index number of the title you are comparing. So, this week, for every 100 copies of "Planet Earth" on HD DVD sold, 95.07 copies of "Planet Earth" on Blu-ray sold, etc.
HD DVD made a bit of a comeback this week, with several new titles in the Top 10 and 40% of the marketshare. This week, however, is an "off" week for the format, with no new titles being released, so I would expect next week's numbers to return Blu-ray to its earlier 2.5:1 or so ratios.
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