<Table> Blu - ray <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Media type </Th> <Td> High - density optical disc </Td> </Tr> <Tr> <Th> Encoding </Th> <Td> H. 265 / MPEG - H Part 2 (HEVC) </Td> </Tr> <Tr> <Th> Capacity </Th> <Td> 50 GB (dual - layer, 82 Mbit / s) 66 GB (dual - layer, 108 Mbit / s) 100 GB (triple - layer, 128 Mbit / s) </Td> </Tr> <Tr> <Th> Block size </Th> <Td> 2 KB sector, 64 KB block size </Td> </Tr> <Tr> <Th> Read mechanism </Th> <Td> Diode laser </Td> </Tr> <Tr> <Th> Developed by </Th> <Td> Blu - ray Disc Association </Td> </Tr> <Tr> <Th> </Th> <Td> 120 mm (4.7 in) diameter </Td> </Tr> <Tr> <Th> Usage </Th> <Td> Ultra-high - definition video </Td> </Tr> </Table> <Tr> <Th> Media type </Th> <Td> High - density optical disc </Td> </Tr>

How much data is on a 4k blu ray
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