Blu-ray technology is supported by electronics giants such as Sony, Samsung, Phillips, and Panasonic. The storage capacity of Blu-ray media is at least 50 gigabytes (GB), which is six times higher than any existing DVD.
Blu-ray DVDs can store a 13-hour normal-quality video or 2-hour high-quality video. HD-DVD, which is supported by Toshiba and NEC, and is compatible with the current DVD standard and cheaper than Blu-ray. HD-DVD’s storage capacity is about three times that of the DVD disk (4.7 GB), which is 15GB for single-layer discs and 30GB for double-layer discs. It can support recording and playback of existing CD or DVD discs. You can enjoy high-quality video at 1080p resolution, which is about six times sharper than the existing DVD. Blu-ray’s advantage is its huge storage capacity, whereas HD-DVD is comparatively cheap. So these two products are leading the market with equal influence
