so it would appear that the only values that actually work are 0.0, 0.5, 1.0, and 2.0...
i tried setting it to 0.25 since I want it to play at 1/4th of the natural speed, but it played it at 1/2 of the natural speed instead. can anyone confirm this?
6 Answers
Confirmed. I actually had a ticket with Apple DTS open for this issue and a bug filed. The only supported values are 0.50, 0.67, 0.80, 1.0, 1.25, 1.50, and 2.0. All other settings are rounded to nearest value.
(Xcode 11.6, iOS 13.6, Swift 5)
It doesn't work with
player.rate = 2.0
It works with
player.playImmediately(atRate: 3.0)
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