Stephen Lawson, InfoWorld:
An ITU group has approved a successor to the H.264 video encoding standard, opening the door to future video transmission using only half the bandwidth that’s now required.
H.265 is also known as High Efficiency Video Coding (HEVC). It improves video quality and doubles the data compression ratio compared to H.264 (the standard heavily leveraged in Apple’s QuickTime video technology). It scales up to 8192 x 4320 resolution, making it suitable for use with Ultra High Definition (UHD) signals.