Extending Reading: Blu-ray vs. HD DVD

Blu-Ray and HD-DVD are two new optical storage technologies that fight as the successor of DVD. This article will show you the difference between these two formats.

Blu-ray Disc (BD) is a next-generation optical disc format meant for storage of high-definition video and high-density data. The format was jointly developed by a group of the world’s leading consumer electronics, personal computer and media manufacturers (including Apple, Dell, Hitachi, HP, JVC, LG, Mitsubishi, Panasonic, Pioneer, Philips, Samsung, Sharp, Sony, TDK and Thomson). As compared to the HD DVD format, Blu-ray has more information capacity per layer and also more expensive. (Wikipedia)

HD DVD is abbreviation for High-Definition/Density DVD which is a discontinued high-density optical disc format for storing data and high-definition video. The format was envisioned to supersede the standard DVD format. However, Toshiba abandoned the format in February 2008. it would no longer develop or manufacture HD DVD players or drives. However, the HD DVD physical disk specifications (but not the codec) are still in use as the basis for the CBHD (China Blue High-Definition Disc). (Wikipedia)

Formats Blu-ray HD DVD
Hardware Support Apple, Denon, Hitachi, LG, Matsushita (Panasonic), Pioneer, Philips, Samsung, Sharp, Sony, and Thomson NEC, Onkyo, Samsung, Sanyo, Thomson, and Toshiba
Software Support Lions Gate, MGM, Miramax, Twentieth Century Fox, Walt Disney Studios, New Line, Warner, Universal, Paramount, and Dreamworks BCI, Dreamworks, Paramount Pictures, Studio Canal, and Universal Pictures, and Warner (only until May 2008)
Storage Capacity (Home Recording) Single-layer (25GB) – Dual-layer (50GB) Single-layer (20GB) – Dual-Sided Disc (40GB) – Dual Layer (35GB – proposed)
Data Transfer Rate 36 to 48 MBPS average 36 MBPS
Disc Properties New format required retooling and/or construction of new disc manufacturing and replication plants. ormat similar to existing DVD disc structure, requiring minimal upgrading and retooling of existing DVD disc manufacturing and replication plants.
Video Specifications MPEG2, MPEG4 and VC1 MPEG2, MPEG4 and VC1
Audio Specifications Dolby Digital, DTS, and Uncompressed PCM. optional – Dolby Digital Plus, Dolby TrueHD, DTS-HD. Dolby Digital Plus, Dolby TrueHD, DTS-HD, and Uncompressed PCM, as well as standard Dolby Digital and DTS.


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