The standard deviation of the observed segment download bit rates.
- iOS 7.0+
- macOS 10.9+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
The value of the property is negative if unknown.
Corresponds to “c-observed-bitrate-sd”.
This property is not compatible with Key-value observing.
Getting Bit Rate Log Events
The bandwidth value that causes a switch, up or down, in the item's quality being played.
The throughput, in bits per second, required to play the stream, as advertised by the server.
The empirical throughput, in bits per second, across all media downloaded.
The average throughput, in bits per second, required to play the stream, as advertised by the server.