![]() ![]() This has allowed people with home theaters to consistently choose the Blu-ray format more prominently over the DVD because of wanting an exceptional sound to what they were watching in addition to a higher quality of the video. It supported additional formats including Dolby TrueHD, Dolby Digital Plus, and DTS-HD. The Blu-ray hit the scene with the promise of better audio quality. In regards to audio, what is the difference between DVD and Blu-ray? DVD formats support a total of three audio formats: Dolby Digital, Linear PCM, and DTS Digital Surround. It also allows the images to come across more clearly. What this means is that there's a more precise reading of what's on the disc to ensure that there are no skips. ![]() A Blu-ray, however, uses a blue laser and reads at a smaller diameter. When it comes to the difference between DVD and Blu-ray, A DVD player will use a red laser at 650nm wavelength. The laser technology used to read the two formats varies differently, too. This means that, even with a DVD labeled as HD, it's not going to be able to hold the same level of data as a Blu-ray disc simply because of the technology. ![]() Some of the double-layer discs out there can hold substantially more. It can hold about 13 hours of standard definition information or about two hours of high-definition information. A Blu-ray can hold about 25 GB of data, which allows for more high-definition information. A DVD will only be able to store about 4.7 GB of data, which equals about two hours of a movie. Storage capacity is measured in gigabytes, similar to computers and storage drives. There's going to be a few other things to look at within your comparison in a DVD vs. ![]()
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