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There are HD and Blu-ray modes in the video. What's the difference between Blu-ray and HD? Please introduce it in detail if you know it. . Thank you. . .
Blue light refers to reading and writing data by using blue laser with short wavelength. Blu-ray is just a carrier, and ordinary DVDs and even hard disks can carry large-size HD sources. The differences between Blu-ray and HD are as follows:

1, with different concepts. Blu-ray is a technology, and HD is a definition. Blu-ray is a high-quality audio-visual storage optical disc medium in the next era after DVD, and high-definition refers to video with resolution higher than 720×480 pixels.

2. Different applications. Blu-ray Disc can store both high-definition audio and video and non-high-definition audio and video. HD video can be stored on Blu-ray Disc, DVD or even CD.

3. The upper limit of capacity is different, with 1080P (high definition) movies above 8G and Blu-ray (ultra-high definition) movies above 20G.

References:

Baidu Encyclopedia-Blu-ray HD

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