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DTS-HD Master Audio is a lossy and lossless codec created by HTS for use in Blu-ray movie soundtracks. It is one of the optional formats alongside Dolby TrueHD. DTS-HD is the most common audio format for Blu-ray discs. It supports 5.1, 6.1 and 7.1 channel surround sound.
DTS-HD Master Audio was originally known as DTS++.
DTS-HD is the most common audio codec used for Blu-ray movies. When played on equipment using DTS Master Audio, it is a bit-for-bit lossless format. Otherwise, it is a lossy codec, where some information from a movie soundtrack is discarded. DTS-HD supports variable bit rates of up to 24.5 megabits per second in Blu-ray and 18 Mb per second on HD-DVD. The audio is transmitted over RCA or HDMI cables.
DTS-HD Master Audio is popular because it offers high sound quality with smaller file sizes.