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The Difference between DVD and Blu-ray
What's the difference between Blu-ray and standard DVD? Most people may have questions about the DVD and Blu-ray difference. Are you also confusing about the similar question? If yes, this article is specially written down here to tell you the difference between DVD and Blu-ray. Just read on to learn more about DVD and Blu-ray right now.
Blu-ray Disc (official abbreviation BD), as an optical disc storage medium designed to supersede the DVD format, looks exactly the same as DVDs in size and shape. However, there are many differences between Blu-ray and standard DVD in the detail parameters, such as storage capacity, laser wavelength, video resolution, player compatibility, etc.
Difference between DVD and Blu-ray: Storage capacity
The primary difference between Blu-ray and standard DVD is the storage capacity. Single layer DVDs can store about 4.7 GB of data, which is about two hours worth of movie. And the double layer DVDs can store the amount of data at 8.75 G. Compared with the Blu-ray Discs, standard DVDs contain much less information. Since the Blu-ray discs contain 25 GB (23.31 GiB) per layer and the dual layer discs can contain 50 GB of data. Because of the lager storage capacity than DVD disc, Blu-ray discs just become the norm for feature-length video discs.
Difference between DVD and Blu-ray: Laser Wavelength
Lasers are used in both DVD and Blu-ray to read the information stored on the disc. DVD uses 650 nm wavelength laser diode light as opposed to 405 nanometers blue laser diodes for Blu-ray. The shorter laser wavelength just made it possible to read closer and more precise information that stored on the disc.
Difference between DVD and Blu-ray: Video Resolution
The DVD and Blu-ray difference also reflected in the video resolution. Almost all DVDs have a standard definition resolution of 720×480/720×576 (480i/576i), while Blu-ray has the video resolution of 1920×1080 (1080p). The Blu-ray was just designed for high definition 1080 display with an entire HD movie fit on a single layer disc. So Blu-ray movies are looked greatly on HDTVs.
Difference between DVD and Blu-ray: Data Transfer Rate
The DVD and Blu-ray have different data transfer rate from each other. The DVD transfer rate for date is 11.08Mbps (1x) and 10.08Mbps (<1x) for video and audio. The Blu-ray has much higher data transfer rate on both common data and video/audio, which has 36.0Mbps (1x) transfer reat for date and 54.0Mbps (1.5x) for video/audio.
Difference between DVD and Blu-ray: Player Compatibility
After DVD and Blu-ray comparison, the difference between Blu-ray and standard DVD also can be embodied in the player compatibility. Standard DVD Players can not be used to play Blu-ray discs, because the red laser used in DVD players is too large to read the tiny grooves in a Blu-ray disc. While all the Blu-ray players currently on the market (including the Playstation 3) are backwards compatible with standard DVDs. What's more, the Blu-ray players will still supports to playback DVDs. One thing you should pay attention to is that the DVD image displayed by the Blu-ray player will still decent. The information stored on standard DVD disc will not be high definition quality like a Blu-ray disc when played through Blu-ray player.
The main differences between DVD and Blu-ray are referred in above text. If you want to play Blu-ray on DVD player, you should rip and convert Blu-ray movies toDVD player supported DVD video format first. The AVCWare Blu-Ray DVD Ripper will help you well. This software can not only rip Blu-ray to DVD but also able to rip and convert DVD to common video formats which are compatible with most media players, like rip Blu-ray to MP4, convert Blu-ray to iPad 2, etc.
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