Technology Electronics

Difference Between Blu Ray & Regular DVD

    Resolution

    • The most notable difference between Blu-ray and regular DVDs is picture quality. DVDs cannot display images in high definition--Blu-rays can. The maximum resolution a Blu-ray can display is 1920-by-1080 pixels, compared to 720-by-480 with DVD. Higher resolution means a clearer picture, less motion blur and more vivid colors.

    Audio

    • In addition to looking better, movies on Blu-ray can sound better than movies on DVD. Audio tracks on DVD have to be compressed to save space. On Blu-ray, audio can be uncompressed and has surround sound formats that were impossible on DVD. Audio standards like DTS Digital Surround and Dolby TrueHD, previously only available in theaters, are compatible with Blu ray

    Storage Space

    • Blu-ray discs display HD video and project uncompressed, high-quality audio because they can store more data. A dual-layer DVD can hold 8.5 GB of information. By comparison, a dual-layer Blu-ray can hold 50 GB of data. Blu-rays can also transfer this data faster than DVDs. The audio and video transfer rates for Blu-ray are 54 megabytes per second, compared to 10.08 megabytes per second with DVD.



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