One of the most common questions about Blu Ray and DVD is, Whats the Difference? and the truth is that there are several. Just as the digital disc replaced VHS tapes with better sound and sharper image quality, the Blu Ray is expected to replace the DVDs with better audio and visual performance and more.
To start, the storage capacity of the current single layer DVD is 4.7GB, and the dual layer is 8.5GB. The Blu Ray discs have 25GB and 50GB, respectively. More storage capacity means more of the movie can fit onto one disc, and there is loads more room for bonus features and interactive extras on the BD (Blu ray) disc. The laser wavelength of the digital video disc (DVD) is 650nm (red laser) while the BD is at 405nm (blue laser). Both kinds of discs have the same diameters and the same thickness, at 120mm and 1.2mm respectively.
What many find interesting about the difference between the DVD disc and the Blu ray format is that while the DVD has a protective layer that is 0.6mm thick, the BD has a layer for protection that is only 0.1mm thick. However, while the digital video disc has no hard coating to help protect it, the BD does. There is a difference in track pitch in the two kinds of formats; the Blu ray has a track pitch of 0.32 ?m while the DVD disc has a track pitch of 0.74 ?m. In addition, the BD has a data transfer rate for downloads of 36.0Mbps (1x) while the digital video disc has a data transfer rate of only 11.08Mbps (1x). For audio and video transfers, the transfer rate for BD is 54.0Mbps (1.5x) and the audio/video transfer rate for the digital disc is only 10.08Mbps (<1x).
There are more differences between these two popular formats as well. The video resolution for the Blu ray format is 1920x1080, or 1080p, while the max resolution for DVDs is 720x480/720x576, or only 480i/576i. The video codecs are much more expansive on the BD as well. While both formats have video codecs of MPEG 2, that is all that digital discs feature. The BD, however, also boasts MPEG 4 AVC and SMPTE VC 1.
The video bit rate on the Blu ray format is 40.0Mbps, while the DVDs trail way behind at only 9.8Mbps. As far as audio goes, the audio codecs for the two formats are somewhat similar, but once again BD beats digital. They both have linear PCM and Dolby Digital, but while that is the extent of the capabilities for the DVD, the Blu ray also includes Dolby TrueHD, DTS Digital Surround, and DTS HD.
Difference Between Blu Ray And Dvd
A movie covers says a lot about your DVD and Blu-ray collection. In fact, creating your own DVD and Blu-ray covers is an enjoyable experience which can release your artistry abilities. The problem with the standard covers that come pre-packaged with your purchase is that they fail to represent the feel and overall essence of the movie. Custom Cover designers manage to create covers which bring to life the meaning feel of the movies that we love to watch. This means that whenever we look over our DVD or Blu-ray collection (which can be quite expensive) we are reminded of the masterpieces that our beloved movies are.
How it began:
Basically, the DVD and blu-ray cover concept evolved from the creation of blu-ray disc. Developed by the Blur-ray Disc Association, Bluray or Blu-ray Disc is defined as an optical disc storage media format. The disc functions as a standard CD or DVD but with high-definition video and higher data storage features. Overall, a smaller wavelength is great because it means more data storage. And with the Blu-ray Disc having a 405 nm wavelength, it can significantly store more data than any DVD format (with 650 nm wavelength).
Having been recently developed, the Blu-ray disc is among the perceived potential replacements for DVD. Having said this, it would be true if it were only based on factors such as reading capacity, estimates usage and mechanics. The Disc has 25 GB capacity (single layer) and 50 GB capacity (dual layer). It uses the blue-violet laser for reading mechanism, which again is of shorter wavelength. Also, the disc can be used mainly for input or recording of high-definition video, PlayStation games, and data storage. Thus, the Blu-ray disc may really be way ahead from other disc storage media available.
Blu-ray Disc developer:
The Blu-ray Disc Association consists of companies that represent computer hardware, consumer electronics, and motion picture production. Apparently, the standard Blue-ray Disc entails several patents from these constituent companies. A joint licensing agreement has been finalized just last March of 2007. And a more recent development is release of more 450 Blu-ray Disc titles in United States and Japan last 19 Feb 2008.
High quality covers matter:
Presentation does matter. This can be true for most people particularly those who are deeply keen to collecting film or game videos. It is true, DVD and Blu-ray covers can say a whole lot about the over quality of the movie.g., special features, capabilities). It is not surprising how poor presentation can instantly affect consumer's buying preference and decision.
Specifically, Blu-ray and DVD covers are purposely created or produced at the highest quality possible. Even the biggest movie producing companies and studios (e.g., Warner Brothers, Walt Disney, Buena Vista Home Entertainment, Paramount, Sony etc.) have begun distributing movie copies in Blu-ray format, and so it goes with the cover. Many websites offer replacements DVD and Blu-ray Covers to make your job of finding suitable replacements easier. So either you make your own or have others make it for you. Either way, you can definitely be assured of a high-quality output.
Both Kelly Renaul & Pablo Zedd are contributors for EditorialToday. The above articles have been edited for relevancy and timeliness. All write-ups, reviews, tips and guides published by EditorialToday.com and its partners or affiliates are for informational purposes only. They should not be used for any legal or any other type of advice. We do not endorse any author, contributor, writer or article posted by our team.
Kelly Renaul has sinced written about articles on various topics from Photography, Recreation and Sports and Home Improvement. For more information on , please visit our website.. Kelly Renaul's top article generates over 1000000 views. to your Favourites.
Pablo Zedd has sinced written about articles on various topics from Public Speaking, Computers and The Internet and Movie Reviews. First impressions last, and this remains true for the artwork of your favourite films. To learn more about how and. Pablo Zedd's top article generates over 27100 views. to your Favourites.
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