The Digital Fact Book - Quantel

2K and 4K2K is a format used in digital film production that uses 4:4:4 10-bit sampling and RGB colorspace with an image size of 2048 x 1536, and has 24 frames per second. This makesone frame 11.80 MB, and an hour of storage 1.04TB. Note that applied to digital cinemaexhibition, the 2K pixel size is 2048 x 1080, and the color space is X´Y´Z´ and uses 12-bit4:4:4 sampling, as defined by the DCI. The 4K image size is increasingly being used for digitalmovies. It is a x2 version of 2K, making x4 the pixel area.Here are some popular TV and digital film formats showing the volume of their uncompresseddata. Compression of up to 100:1 is applied to MPEG-2 TV transmissions – over 100:1 maybe used with more advanced codecs such as MPEG-4 and VC-1. DCI have given a maximumdata rate for replay rate for digital cinemas of 250 Mb/s. Here JPEG 2000 compressionis used and there is no inter-frame compression; this works out at a compression of about6.4:1 for 2K and 25.5:1 for 4K.SFormat Sampling Image size One Frame Data rate One Hour(H x V) MB Mb/s GB320/15P 4:1:1 8-bit 320 x 240 0.12 14.4 6.5(3G phone)525/60I 4:2:2 8-bit 720 x 480 0.69 166 76625/50I 4:2:2 8-bit 720 x 576 0.83 166 76720/60P 4:2:2 10-bit 1280 x 720 2.3 1104 5001080/60I 4:2:2 10-bit 1920 x 1080 5.2 1248 5601080/25P 4:4:4 10-bit 1920 x 1080 7.8 1560 700(RGB)1080/60P 4:4:4 10-bit 1920 x 1080 7.8 3744 1680(RGB)2K/24P 4:4:4 12-bit 2048 x 1080 10 1913 860(DCI cine)2K/24P 4:4:4 10-bit 2048 x 1536 12 2304 1036(prod)4K/24P 4:4:4 12-bit 4096 x 2160 39.8 7650 3442(DCI cine)4K/24P 4:4:4 10-bit 4096 x 3072 48 9216 4144(production)See also: Byte, Dylan, Into digits (Tutorial 1), ITU-R BT.601, ITU-R BT.709, SMPTE 272M162