7 main channels, 1 subwoofer, and 4 height channels.īoth DD+ and TrueHD carry the height channels in metadata. For example I'm putting together a 7.1.4 Atmos system. There are two codecs used with Dolby Atmos content.Ītmos offers additional height channels to the more traditional 5.1 or 7.1. Here is a little background and all the information you'll need to decode and play lossless Dolby TrueHD with Atmos on a Windows or macOS computer, without the need for HDMI output. It never plays both at the same time so it's not a cumulative thing like DTS-HD.Yes, you read the title correctly.

Even when played from UHD a player only uses either the AC3 extension or it uses the TrueHD part if your audio equipment supports it. You don't lose any quality with TrueHD and AC3 being separate tracks vs two attached tracks. Even most older DTS decoders don't have any issue and can automatically choose the correct format as legacy decoders wont' even see the MA portion so Makemkv doesn't automatically remove the core (though it can still extract the core and create a separate track if needed for things like when running DTS through a SPDIF cable.) However, some dolby decoders used on other devices have issues with the TrueHD extension because it sees the two parts and doesn't know what to do with it so tools like Makemkv will automatically separate the two and place them in separate tracks inside the container.ĭTS-HD is a little different and has an actual DTS core.

This is a Blu-ray spec to support different legacy audio equipment. TrueHD as found on UHD will have an AC3 extension which is seen as one file which UHD players can utilize either part depending on the audio equipment used.

Makemkv 4k dolby atmos