# isDownmix A Boolean value that indicates whether the variant is a downmix derivative of other media of greater channel count. ``` var isDownmix: Bool { get } ``` ## Discussion If the stream provides one or more multichannel variants, the system assumes the dowmix rendition to be compatible in its internal timing and other attributes with the other variants. Typically, this is because the variant derives its content from the same source. You can use a downmix as a suitable substitute for a multichannel variant under some conditions. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)