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Camera and Microphone streaming library via RTMP, HLS for iOS, macOS, tvOS.

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HaishinKit for iOS, macOS, tvOS, visionOS and Android.

GitHub Stars Release Platform Compatibility Swift Compatibility GitHub license GitHub Sponsor

  • Camera and Microphone streaming library via RTMP and SRT for iOS, macOS, tvOS and visionOS.
  • README.md contains unreleased content, which can be tested on the main branch.
  • API Documentation

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💬 Communication

  • If you need help with making LiveStreaming requests using HaishinKit, use a GitHub Discussions with Q&A.
  • If you'd like to discuss a feature request, use a GitHub Discussions with Idea
  • If you met a HaishinKit's bug🐛, use a GitHub Issue with Bug report template
    • The trace level log is very useful. Please set LBLogger.with(HaishinKitIdentifier).level = .trace.
    • If you don't use an issue template. I will immediately close the your issue without a comment.
  • If you want to contribute, submit a pull request with a pr template.
  • If you want to support e-mail based communication without GitHub.
    • Consulting fee is $50/1 incident. I'm able to response a few days.
  • Discord chatroom.
  • 日本語が分かる方は、日本語でのコミニケーションをお願いします!

💖 Sponsors



Sponsorship

🌏 Related projects

Project name Notes License
HaishinKit for Android. Camera and Microphone streaming library via RTMP for Android. BSD 3-Clause "New" or "Revised" License
HaishinKit for Flutter. Camera and Microphone streaming library via RTMP for Flutter. BSD 3-Clause "New" or "Revised" License

🎨 Features

RTMP

  • Authentication
  • Publish and Recording
  • Playback (Beta)
  • Adaptive bitrate streaming
  • Action Message Format
    • AMF0
    • AMF3
  • SharedObject
  • RTMPS
    • Native (RTMP over SSL/TLS)
    • Tunneled (RTMPT over SSL/TLS) (Technical Preview)
  • RTMPT (Technical Preview)
  • ReplayKit Live as a Broadcast Upload Extension
  • Enhanced RTMP

SRT(beta)

  • Publish and Recording (H264/AAC)
  • Playback(beta)
  • mode
    • caller
    • listener
    • rendezvous

Multi Camera

Supports two camera video sources. A picture-in-picture display that shows the image of the secondary camera of the primary camera. Supports camera split display that displays horizontally and vertically.

Picture-In-Picture Split
// If you want to use the multi-camera feature, please make sure stream.isMultiCamSessionEnabled = true. Before attachCamera or attachAudio.
stream.isMultiCamSessionEnabled = true

let back = AVCaptureDevice.default(.builtInWideAngleCamera, for: .video, position: .back)
stream.attachCamera(back, track: 0) { _, error in
  if let error {
    logger.warn(error)
  }
}

let front = AVCaptureDevice.default(.builtInWideAngleCamera, for: .video, position: .front)
stream.attachCamera(front, track: 1) { videoUnit, error in
  videoUnit?.isVideoMirrored = true
  if let error {
    logger.error(error)
  }
}

Rendering

Features PiPHKView MTHKView
Engine AVSampleBufferDisplayLayer Metal
Publish
Playback
VisualEffect
MultiCamera
PictureInPicture

Others

🐾 Examples

Examples project are available for iOS with UIKit, iOS with SwiftUI, macOS and tvOS. Example macOS requires Apple Silicon mac.

  • Camera and microphone publish.
  • Playback
git clone https://github.com/shogo4405/HaishinKit.swift.git
cd HaishinKit.swift
carthage bootstrap --platform iOS,macOS,tvOS --use-xcframeworks
open HaishinKit.xcodeproj

🌏 Requirements

Development

Version Xcode Swift
1.8.0+ 15.3+ 5.9+
1.7.0+ 15.0+ 5.9+
1.6.0+ 15.0+ 5.8+

OS

- iOS tvOS macOS visionOS watchOS
HaishinKit 13.0+ 13.0+ 10.15+ 1.0+ -
SRTHaishinKit 13.0+ - 13.0+ - -

Cocoa Keys

Please contains Info.plist.

iOS 10.0+

  • NSMicrophoneUsageDescription
  • NSCameraUsageDescription

macOS 10.14+

  • NSMicrophoneUsageDescription
  • NSCameraUsageDescription

tvOS 17.0+

  • NSMicrophoneUsageDescription
  • NSCameraUsageDescription

🔧 Installation

HaishinKit has a multi-module configuration. If you want to use the SRT protocol, please use SRTHaishinKit. SRTHaishinKit supports SPM only.

HaishinKit SRTHaishinKit
SPM https://github.com/shogo4405/HaishinKit.swift https://github.com/shogo4405/HaishinKit.swift
CocoaPods source 'https://github.com/CocoaPods/Specs.git'
use_frameworks!

def import_pods
pod 'HaishinKit', '~> 1.6.0
end

target 'Your Target' do
platform :ios, '12.0'
import_pods
end
Not supported.
Carthage github "shogo4405/HaishinKit.swift" ~> 1.6.0 Not supported.

🔧 Prerequisites

Make sure you setup and activate your AVAudioSession iOS.

import AVFoundation
let session = AVAudioSession.sharedInstance()
do {
    try session.setCategory(.playAndRecord, mode: .default, options: [.defaultToSpeaker, .allowBluetooth])
    try session.setActive(true)
} catch {
    print(error)
}

📓 RTMP Usage

Ingest

let connection = RTMPConnection()
let stream = RTMPStream(connection: connection)

stream.attachAudio(AVCaptureDevice.default(for: .audio)) { _, error in
  if let error {
    logger.warn(error)
  }
}

stream.attachCamera(AVCaptureDevice.default(.builtInWideAngleCamera, for: .video, position: .back), track: 0) { _, error in
  if let error {
    logger.warn(error)
  }
}

let hkView = MTHKView(frame: view.bounds)
hkView.videoGravity = AVLayerVideoGravity.resizeAspectFill
hkView.attachStream(stream)

// add ViewController#view
view.addSubview(hkView)

connection.connect("rtmp://localhost/appName/instanceName")
stream.publish("streamName")

Playback

let connection = RTMPConnection()
let stream = RTMPStream(connection: connection)

let hkView = MTHKView(frame: view.bounds)
hkView.videoGravity = AVLayerVideoGravity.resizeAspectFill
hkView.attachStream(stream)

// add ViewController#view
view.addSubview(hkView)

connection.connect("rtmp://localhost/appName/instanceName")
stream.play("streamName")

Authentication

var connection = RTMPConnection()
connection.connect("rtmp://username:password@localhost/appName/instanceName")

📓 SRT Usage

Ingest

let connection = SRTConnection()
let stream = SRTStream(connection: connection)
stream.attachAudio(AVCaptureDevice.default(for: .audio)) { error in
    // print(error)
}
stream.attachCamera(AVCaptureDevice.default(.builtInWideAngleCamera, for: .video, position: .back), track: 0) { _, error in
  if let error {
    logger.warn(error)
  }
}

let hkView = HKView(frame: view.bounds)
hkView.videoGravity = AVLayerVideoGravity.resizeAspectFill
hkView.attachStream(rtmpStream)

// add ViewController#view
view.addSubview(hkView)

connection.connect("srt://host:port?option=foo")
stream.publish()

Playback

let connection = SRTConnection()
let stream = SRTStream(connection: connection)

let hkView = MTHKView(frame: view.bounds)
hkView.videoGravity = AVLayerVideoGravity.resizeAspectFill
hkView.attachStream(rtmpStream)

// add ViewController#view
view.addSubview(hkView)

connection.connect("srt://host:port?option=foo")
stream.play()

📓 Settings

📹 AVCaptureSession

stream.frameRate = 30
stream.sessionPreset = AVCaptureSession.Preset.medium

// Do not call beginConfiguration() and commitConfiguration() internally within the scope of the method, as they are called internally.
stream.configuration { session in
  session.automaticallyConfiguresApplicationAudioSession = true
}

🔊 Audio

Specifies the capture capture settings.

let front = AVCaptureDevice.default(for: .audio)
stream.attachAudio(front, track: 0) { audioUnit, error in
}

If you want to mix multiple audio tracks, please enable the Feature flag.

FeatureUtil.setEnabled(for: .multiTrackAudioMixing, isEnabled: true)

When you specify the sampling rate, it will perform resampling. Additionally, in the case of multiple channels, downsampling can be applied.

// Setting the value to 0 will be the same as the value specified in mainTrack.
stream.audioMixerSettings = IOAudioMixerSettings(
  sampleRate: Float64 = 44100,
  channels: UInt32 = 0,
)

stream.audioMixerSettings.isMuted = false
stream.audioMixerSettings.mainTrack = 0
stream.audioMixerSettings.tracks = [
  0: .init(
    isMuted: Bool = false,
    downmix: Bool = true,
    channelMap: [Int]? = nil
  )
]
/// Specifies the bitRate of audio output.
stream.audioSettings.bitrate = 64 * 1000
/// Specifies the mixes the channels or not. Currently, it supports input sources with 4, 5, 6, and 8 channels.
stream.audioSettings.downmix = true
/// Specifies the map of the output to input channels.
 stream.audioSettings.channelMap: [Int]? = nil

🎥 Video

Specifies the video capture settings.

let front = AVCaptureDevice.default(.builtInWideAngleCamera, for: .video, position: .front)
stream.attachCamera(front, track: 0) { videoUnit, error in
  videoUnit?.isVideoMirrored = true
  videoUnit?.preferredVideoStabilizationMode = .standard
  videoUnit?.colorFormat = kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange
}
stream.videoMixerSettings = IOVideoMixerSettings(
  mode: .pip,
  cornerRadius: 16.0,
  regionOfInterest: .init(
    origin: CGPoint(x: 16, y: 16),
    size: .init(width: 160, height: 160)
  ),
  direction: .east
)
stream.videoSettings = .init(
  videoSize: .init(width: 854, height: 480),
  profileLevel: kVTProfileLevel_H264_Baseline_3_1 as String,
  bitRate: 640 * 1000,
  maxKeyFrameIntervalDuration: 2,
  scalingMode: .trim,
  bitRateMode: .average,
  allowFrameReordering: nil,
  isHardwareEncoderEnabled: true
)

⏺️ Recording

Internally, I am now handling data with more than 3 channels. If you encounter audio issues with IOStreamRecorder, it is recommended to set it back to a maximum of 2 channels when saving locally.

let channels = max(stream.audioInputFormats[0].channels ?? 1, 2)
stream.audioMixerSettings = .init(sampleRate: 0, channels: channels)
// Specifies the recording settings. 0" means the same of input.
var recorder = IOStreamRecorder()
stream.addObserver(recorder)

recorder.settings = [
  AVMediaType.audio: [
    AVFormatIDKey: Int(kAudioFormatMPEG4AAC),
    AVSampleRateKey: 0,
    AVNumberOfChannelsKey: 0,
    // AVEncoderBitRateKey: 128000,
  ],
  AVMediaType.video: [
    AVVideoCodecKey: AVVideoCodecH264,
    AVVideoHeightKey: 0,
    AVVideoWidthKey: 0,
    /*
    AVVideoCompressionPropertiesKey: [
      AVVideoMaxKeyFrameIntervalDurationKey: 2,
      AVVideoProfileLevelKey: AVVideoProfileLevelH264Baseline30,
      AVVideoAverageBitRateKey: 512000
    ]
    */
  ]
]

recorder.startRunning()
// recorder.stopRunning()

📜 License

BSD-3-Clause

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