# IVS Broadcast SDK: iOS Guide \$1 Low-Latency Streaming
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The IVS Low-Latency Streaming iOS Broadcast SDK provides the interfaces required to broadcast to Amazon IVS on iOS.

The `AmazonIVSBroadcast` module implements the interface described in this document. The following operations are supported:
+ Set up (initialize) a broadcast session. 
+ Manage broadcasting.
+ Attach and detach input devices.
+ Manage a composition session. 
+ Receive events. 
+ Receive errors. 

**Latest version of iOS broadcast SDK:** 1.41.0 ([Release Notes](https://docs.aws.amazon.com/ivs/latest/LowLatencyUserGuide/release-notes.html#apr09-26-broadcast-mobile-ll)) 

**Reference documentation:** For information on the most important methods available in the Amazon IVS iOS broadcast SDK, see the reference documentation at [https://aws.github.io/amazon-ivs-broadcast-docs/1.41.0/ios/](https://aws.github.io/amazon-ivs-broadcast-docs/1.41.0/ios/).

**Sample code: **See the iOS sample repository on GitHub: [https://github.com/aws-samples/amazon-ivs-broadcast-ios-sample](https://github.com/aws-samples/amazon-ivs-broadcast-ios-sample).

**Platform requirements:** iOS 14\$1

## How iOS Chooses Camera Resolution and Frame Rate
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The camera managed by the broadcast SDK optimizes its resolution and frame rate (frames-per-second, or FPS) to minimize heat production and energy consumption. This section explains how the resolution and frame rate are selected to help host applications optimize for their use cases.

When attaching an `IVSCamera` to an `IVSBroadcastSession`, the camera is optimized for a frame rate of `IVSVideoConfiguration.targetFramerate` and a resolution of `IVSVideoConfiguration.size`. These values are provided to the `IVSBroadcastSession` on initialization.