Manufactures came up with the following solution. They found if a Blue ray laser with a shorter wavelength was used instead of a red ray type laser ,a DVD could hold about 5 times more data for HD films .
A single layer disk could hold 25 GB and a dual layer could hold 50 GB.
This meant a film could be recorded onto a optical disk with high definition up to 1920 x 1080 pixels with room for uncompressed theatre like surround
sound.
Blu-Ray DVD recorder's and disks now starting to appear in shop's. Also built into desktop and laptop pc's.