CMTimeMakeWithSeconds explained

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CMTime is structure which has two main components, timeScale and value.


CMTIME = VALUE  / TIMESCALE

where, TimeScale =  fraction of a second each unit in numerator occupies.

CMTIME = Value / TimeScale

1) public func CMTimeMake(_ value: Int64, _ timescale: Int32) -> CMTime

CMTimeMake(6000, 10)

Means, there are 6000 units , each unit occupies 1/10 of a second


2) public func CMTimeMakeWithSeconds(_ seconds: Float64, _ preferredTimescale: Int32) -> CMTime

CMTimeMakeWithSeconds(10.0,500)

10.0 = VALUE /500

Therefore VALUE = 5000

So, there are 5000 units, each occupy 1/500 of a second


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