Programmable Video Fundamentals

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Programmable Video Fundamentals 1. Video Apps & WebRTC 2. Programmable Video 3. Basic Multiparty Video Chat 4. Access Tokens & Room Security 5. REST API & Status Callbacks 6. Production Check-list © 2017 TWILIO, INC. ALL RIGHTS RESERVED.

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MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS WebRTC • Specification for real-time communication • WebRTC’s core API is the RTCPeerConnection © 2017 TWILIO, INC. ALL RIGHTS RESERVED.

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MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS WebRTC • Specification for real-time communication • WebRTC’s core API is the RTCPeerConnection • But not just browsers—mobile, desktop, embedded, etc. © 2017 TWILIO, INC. ALL RIGHTS RESERVED.

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MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS WebRTC • Twilio built its Programmable Voice SDKs in part using WebRTC. • Twilio’s Programmable Video SDKs also make use of WebRTC. © 2017 TWILIO, INC. ALL RIGHTS RESERVED.

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© 2017 TWILIO, INC. ALL RIGHTS RESERVED. © 2017 TWILIO, INC. ALL RIGHTS RESERVED. • sid • name • connect() • disconnect() • participants • “participantConnected” • “participantDisconnected” • sid • identity • tracks • addTrack() • removeTrack() • “trackAdded” • “trackRemoved” • sid • kind • isEnabled • enable() • disable() • “trackEnabled” • “trackDisabled” Room Participant Track

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1. Acquire LocalTracks 2. Connect to a Room 3. Handle Participants 4. Handle Participants’ Tracks 5. Disconnect © 2017 TWILIO, INC. ALL RIGHTS RESERVED. MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS © 2017 TWILIO, INC. ALL RIGHTS RESERVED. const { connect, createLocalTracks } = require(‘twilio-video’) // 1. Acquire LocalTracks const tracks = await createLocalTracks({ audio: true, video: true }) // 2. Connect to a Room const room = await connect(token, { name: ‘My Cool Room’, logLevel: ‘debug’, iceServers: [ /* … */ ], tracks }) JAVASCRIPT

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1. Acquire LocalTracks 2. Connect to a Room 3. Handle Participants 4. Handle Participants’ Tracks 5. Disconnect © 2017 TWILIO, INC. ALL RIGHTS RESERVED. MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS © 2017 TWILIO, INC. ALL RIGHTS RESERVED. const { connect, createLocalTracks } = require(‘twilio-video’) // 1. Acquire LocalTracks const tracks = await createLocalTracks({ audio: true, video: true }) // 2. Connect to a Room const room = await connect(token, { tracks }) const { name, sid } = room console.log(‘Connected to “%s” (%s)’, name, sid) JAVASCRIPT

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1. Acquire LocalTracks 2. Connect to a Room 3. Handle Participants 4. Handle Participants’ Tracks 5. Disconnect © 2017 TWILIO, INC. ALL RIGHTS RESERVED. MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS © 2017 TWILIO, INC. ALL RIGHTS RESERVED. const { connect, createLocalTracks } = require(‘twilio-video’) // 1. Acquire LocalTracks const tracks = await createLocalTracks({ audio: true, video: true }) // 2. Connect to a Room const room = await connect(token, { tracks }) const { name, sid } = room console.log(‘Connected to “%s” (%s)’, name, sid) addRoomView(room) JAVASCRIPT

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1. Acquire LocalTracks 2. Connect to a Room 3. Handle Participants 4. Handle Participants’ Tracks 5. Disconnect © 2017 TWILIO, INC. ALL RIGHTS RESERVED. MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS © 2017 TWILIO, INC. ALL RIGHTS RESERVED. // 3. Handle Participants room.participants.forEach(handleParticipant) room.on(‘participantConnected’, handleParticipant) function handleParticipant(participant) { const { identity } = participant console.log(‘%s connected’, identity) participant.on(‘disconnected’, () => { // Cleanup whatever UI component we created // for the Participant. console.log(‘%s disconnected’, identity) }) // … } JAVASCRIPT

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1. Acquire LocalTracks 2. Connect to a Room 3. Handle Participants 4. Handle Participants’ Tracks 5. Disconnect © 2017 TWILIO, INC. ALL RIGHTS RESERVED. MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS © 2017 TWILIO, INC. ALL RIGHTS RESERVED. // 3. Handle Participants room.participants.forEach(handleParticipant) room.on(‘participantConnected’, handleParticipant) function handleParticipant(participant) { const { identity } = participant console.log(‘%s connected’, identity) participant.on(‘disconnected’, () => { // Cleanup whatever UI component we created // for the Participant. console.log(‘%s disconnected’, identity) }) // … } JAVASCRIPT

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1. Acquire LocalTracks 2. Connect to a Room 3. Handle Participants 4. Handle Participants’ Tracks 5. Disconnect © 2017 TWILIO, INC. ALL RIGHTS RESERVED. MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS © 2017 TWILIO, INC. ALL RIGHTS RESERVED. // 3. Handle Participants room.participants.forEach(handleParticipant) room.on(‘participantConnected’, handleParticipant) function handleParticipant(participant) { const { identity } = participant console.log(‘%s connected’, identity) participant.on(‘disconnected’, () => { // Cleanup whatever UI component we created // for the Participant. console.log(‘%s disconnected’, identity) }) // … } JAVASCRIPT

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1. Acquire LocalTracks 2. Connect to a Room 3. Handle Participants 4. Handle Participants’ Tracks 5. Disconnect © 2017 TWILIO, INC. ALL RIGHTS RESERVED. MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS © 2017 TWILIO, INC. ALL RIGHTS RESERVED. // 3. Handle Participants room.participants.forEach(handleParticipant) room.on(‘participantConnected’, handleParticipant) function handleParticipant(participant) { const { identity } = participant console.log(‘%s connected’, identity) participant.on(‘disconnected’, () => { // Cleanup whatever UI component we created // for the Participant. console.log(‘%s disconnected’, identity) }) // … } JAVASCRIPT

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1. Acquire LocalTracks 2. Connect to a Room 3. Handle Participants 4. Handle Participants’ Tracks 5. Disconnect © 2017 TWILIO, INC. ALL RIGHTS RESERVED. MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS © 2017 TWILIO, INC. ALL RIGHTS RESERVED. // 3. Handle Participants room.participants.forEach(handleParticipant) room.on(‘participantConnected’, handleParticipant) function handleParticipant(participant) { const { identity, sid } = participant console.log(‘%s (%s) connected’, identity, sid) addParticipantView(participant) participant.once(‘disconnected’, () => { console.log(‘%s disconnected’, identity) }) } JAVASCRIPT

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1. Acquire LocalTracks 2. Connect to a Room 3. Handle Participants 4. Handle Participants’ Tracks 5. Disconnect © 2017 TWILIO, INC. ALL RIGHTS RESERVED. MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS © 2017 TWILIO, INC. ALL RIGHTS RESERVED. // 3. Handle Participants room.participants.forEach(handleParticipant) room.on(‘participantConnected’, handleParticipant) function handleParticipant(participant) { const { identity, sid } = participant console.log(‘%s (%s) connected’, identity, sid) addParticipantView(participant) participant.once(‘disconnected’, () => { console.log(‘%s disconnected’, identity) }) } JAVASCRIPT

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1. Acquire LocalTracks 2. Connect to a Room 3. Handle Participants 4. Handle Participants’ Tracks 5. Disconnect © 2017 TWILIO, INC. ALL RIGHTS RESERVED. MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS © 2017 TWILIO, INC. ALL RIGHTS RESERVED. // 3. Handle Participants room.participants.forEach(handleParticipant) room.on(‘participantConnected’, handleParticipant) function handleParticipant(participant) { const { identity, sid } = participant console.log(‘%s (%s) connected’, identity, sid) addParticipantView(participant) participant.once(‘disconnected’, () => { console.log(‘%s disconnected’, identity) removeParticipantView(participant) }) } JAVASCRIPT

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1. Acquire LocalTracks 2. Connect to a Room 3. Handle Participants 4. Handle Participants’ Tracks 5. Disconnect © 2017 TWILIO, INC. ALL RIGHTS RESERVED. MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS © 2017 TWILIO, INC. ALL RIGHTS RESERVED. // 3. Handle Participants room.participants.forEach(handleParticipant) room.on(‘participantConnected’, handleParticipant) function handleParticipant(participant) { const { identity, sid } = participant console.log(‘%s (%s) connected’, identity, sid) addParticipantView(participant) participant.once(‘disconnected’, () => { console.log(‘%s disconnected’, identity) removeParticipantView(participant) }) // 4. Handle Participants’ Tracks } JAVASCRIPT

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1. Acquire LocalTracks 2. Connect to a Room 3. Handle Participants 4. Handle Participants’ Tracks 5. Disconnect © 2017 TWILIO, INC. ALL RIGHTS RESERVED. MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS © 2017 TWILIO, INC. ALL RIGHTS RESERVED. // 3. Handle Participants room.participants.forEach(handleParticipant) room.on(‘participantConnected’, handleParticipant) function handleParticipant(participant) { const { identity, sid } = participant console.log(‘%s (%s) connected’, identity, sid) addParticipantView(participant) participant.once(‘disconnected’, () => { console.log(‘%s disconnected’, identity) removeParticipantView(participant) }) // 4. Handle Participants’ Tracks participant.tracks.forEach(handleTrackAdded) } JAVASCRIPT

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1. Acquire LocalTracks 2. Connect to a Room 3. Handle Participants 4. Handle Participants’ Tracks 5. Disconnect © 2017 TWILIO, INC. ALL RIGHTS RESERVED. MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS © 2017 TWILIO, INC. ALL RIGHTS RESERVED. // 3. Handle Participants room.participants.forEach(handleParticipant) room.on(‘participantConnected’, handleParticipant) function handleParticipant(participant) { const { identity, sid } = participant console.log(‘%s (%s) connected’, identity, sid) addParticipantView(participant) participant.once(‘disconnected’, () => { console.log(‘%s disconnected’, identity) removeParticipantView(participant) }) // 4. Handle Participants’ Tracks participant.tracks.forEach(handleTrackAdded) participant.on(‘trackAdded’, handleTrackAdded) } JAVASCRIPT

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1. Acquire LocalTracks 2. Connect to a Room 3. Handle Participants 4. Handle Participants’ Tracks 5. Disconnect © 2017 TWILIO, INC. ALL RIGHTS RESERVED. MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS © 2017 TWILIO, INC. ALL RIGHTS RESERVED. // 3. Handle Participants room.participants.forEach(handleParticipant) room.on(‘participantConnected’, handleParticipant) function handleParticipant(participant) { // … // 4. Handle Participants’ Tracks participant.tracks.forEach(handleTrackAdded) participant.on(‘trackAdded’, handleTrackAdded) } JAVASCRIPT

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1. Acquire LocalTracks 2. Connect to a Room 3. Handle Participants 4. Handle Participants’ Tracks 5. Disconnect © 2017 TWILIO, INC. ALL RIGHTS RESERVED. MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS © 2017 TWILIO, INC. ALL RIGHTS RESERVED. // 3. Handle Participants room.participants.forEach(handleParticipant) room.on(‘participantConnected’, handleParticipant) function handleParticipant(participant) { // … // 4. Handle Participants’ Tracks participant.tracks.forEach(handleTrackAdded) participant.on(‘trackAdded’, handleTrackAdded) participant.on(‘trackRemoved’, handleTrackRemoved) } JAVASCRIPT

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1. Acquire LocalTracks 2. Connect to a Room 3. Handle Participants 4. Handle Participants’ Tracks 5. Disconnect © 2017 TWILIO, INC. ALL RIGHTS RESERVED. MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS © 2017 TWILIO, INC. ALL RIGHTS RESERVED. // 3. Handle Participants room.participants.forEach(handleParticipant) room.on(‘participantConnected’, handleParticipant) function handleParticipant(participant) { // … // 4. Handle Participants’ Tracks participant.tracks.forEach(handleTrackAdded) participant.on(‘trackAdded’, handleTrackAdded) participant.on(‘trackRemoved’, handleTrackRemoved) } JAVASCRIPT

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1. Acquire LocalTracks 2. Connect to a Room 3. Handle Participants 4. Handle Participants’ Tracks 5. Disconnect © 2017 TWILIO, INC. ALL RIGHTS RESERVED. MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS © 2017 TWILIO, INC. ALL RIGHTS RESERVED. // 3. Handle Participants room.participants.forEach(handleParticipant) room.on(‘participantConnected’, handleParticipant) function handleParticipant(participant) { // … // 4. Handle Participants’ Tracks participant.tracks.forEach(handleTrackAdded) participant.on(‘trackAdded’, handleTrackAdded) participant.on(‘trackRemoved’, handleTrackRemoved) } JAVASCRIPT

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1. Acquire LocalTracks 2. Connect to a Room 3. Handle Participants 4. Handle Participants’ Tracks 5. Disconnect © 2017 TWILIO, INC. ALL RIGHTS RESERVED. MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS © 2017 TWILIO, INC. ALL RIGHTS RESERVED. function handleTrackAdded(track) { const videoElement = track.attach() videoElement.id = ‘track-‘ track.id document.body.appendChild(videoElement) } function handleTrackRemoved(track) { const videoElements = track.detach() videoElements.forEach(videoElement => { videoElement.remove() })  } // 5. Disconnect JAVASCRIPT

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1. Acquire LocalTracks 2. Connect to a Room 3. Handle Participants 4. Handle Participants’ Tracks 5. Disconnect © 2017 TWILIO, INC. ALL RIGHTS RESERVED. MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS © 2017 TWILIO, INC. ALL RIGHTS RESERVED. function handleTrackAdded(track) { const videoElement = track.attach() videoElement.id = ‘track-‘ track.id document.body.appendChild(videoElement) } function handleTrackRemoved(track) { const videoElements = track.detach() videoElements.forEach(videoElement => { videoElement.remove() })  } // 5. Disconnect room.disconnect() JAVASCRIPT

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1. Acquire LocalTracks 2. Connect to a Room 3. Handle Participants 4. Handle Participants’ Tracks 5. Disconnect © 2017 TWILIO, INC. ALL RIGHTS RESERVED. MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS © 2017 TWILIO, INC. ALL RIGHTS RESERVED. function handleTrackAdded(track) { const videoElement = track.attach() videoElement.id = ‘track-‘ track.id document.body.appendChild(videoElement) } function handleTrackRemoved(track) { const videoElements = track.detach() videoElements.forEach(videoElement => { videoElement.remove() })  } // 5. Disconnect room.disconnect() room.participants.forEach(removeParticipantView) JAVASCRIPT

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1. Acquire LocalTracks 2. Connect to a Room 3. Handle Participants 4. Handle Participants’ Tracks 5. Disconnect © 2017 TWILIO, INC. ALL RIGHTS RESERVED. MAIN CONTENT AND SUPPORTING TEXT PROGRAMMABLE VIDEO FUNDAMENTALS © 2017 TWILIO, INC. ALL RIGHTS RESERVED. function handleTrackAdded(track) { const videoElement = track.attach() videoElement.id = ‘track-‘ track.id document.body.appendChild(videoElement) } function handleTrackRemoved(track) { const videoElements = track.detach() videoElements.forEach(videoElement => { videoElement.remove() })  } // 5. Disconnect room.disconnect() room.participants.forEach(removeParticipantView) removeRoomView(room) JAVASCRIPT

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© 2017 TWILIO, INC. ALL RIGHTS RESERVED. PROGRAMMABLE VIDEO FUNDAMENTALS • https://github.com/twilio/video-quickstart-android • https://github.com/twilio/video-quickstart-js • https://github.com/twilio/video-quickstart-objc • https://github.com/twilio/video-quickstart-swift

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© 2017 TWILIO, INC. ALL RIGHTS RESERVED. © 2017 TWILIO, INC. ALL RIGHTS RESERVED. 1. Access Tokens grant your apps access to Twilio services 2. Used by Programmable Voice, Video, Chat, Sync, etc. 3. Encode client identity & product- specific capabilities

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© 2017 TWILIO, INC. ALL RIGHTS RESERVED. © 2017 TWILIO, INC. ALL RIGHTS RESERVED. { "iss": "SK9eae711dc87feb56fdcfce9ef0b93354", "sub": "ACcd224d70006373d9b37eb3202c52df90", "exp": 1494914080, "grants": { "identity": "Alice", "video": { "room": "My Cool Room” } } } ACCESS TOKENS

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© 2017 TWILIO, INC. ALL RIGHTS RESERVED. © 2017 TWILIO, INC. ALL RIGHTS RESERVED. { "iss": "SK9eae711dc87feb56fdcfce9ef0b93354", "sub": "ACcd224d70006373d9b37eb3202c52df90", "exp": 1494914080, "grants": { "identity": “[email protected]”, "video": { "room": "My Cool Room” } } } 1. API Key SID 2. Account SID 3. Expiration Date 4. Client Identity ACCESS TOKENS

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© 2017 TWILIO, INC. ALL RIGHTS RESERVED. © 2017 TWILIO, INC. ALL RIGHTS RESERVED. { "iss": "SK9eae711dc87feb56fdcfce9ef0b93354", "sub": "ACcd224d70006373d9b37eb3202c52df90", "exp": 1494914080, "grants": { "identity": “1234567890”, "video": { "room": "My Cool Room” } } } 1. API Key SID 2. Account SID 3. Expiration Date 4. Client Identity ACCESS TOKENS

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© 2017 TWILIO, INC. ALL RIGHTS RESERVED. © 2017 TWILIO, INC. ALL RIGHTS RESERVED. 1. Create Access Tokens in the Twilio Console during development. 2. Vend Access Tokens from an application server in production.

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© 2017 TWILIO, INC. ALL RIGHTS RESERVED. PROGRAMMABLE VIDEO FUNDAMENTALS ALICE APP SERVER TWILIO BOB { identity: “Alice”, video: { room: “Foo” } } { identity: “Bob”, video: { room: “Foo” } } USER DATABASE

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© 2017 TWILIO, INC. ALL RIGHTS RESERVED. PROGRAMMABLE VIDEO FUNDAMENTALS ALICE APP SERVER TWILIO BOB USER DATABASE Foo ROOM { identity: “Alice”, video: { room: “Foo” } } { identity: “Bob”, video: { room: “Foo” } }

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1. Set the default Room type, either P2P or Group 2. Enable or disable TURN 3. Limit the maximum number of Participants in a Room 4. Allow or disallow application users to create ad-hoc Rooms © 2017 TWILIO, INC. ALL RIGHTS RESERVED. © 2017 TWILIO, INC. ALL RIGHTS RESERVED. Account-level  Configuration

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© 2017 TWILIO, INC. ALL RIGHTS RESERVED. © 2017 TWILIO, INC. ALL RIGHTS RESERVED. 1. GET /v1/Rooms  Get the list of Rooms created in your account. 2. GET /v1/Rooms/{RoomNameOrSid}  Get a particular Room by name or SID.

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© 2017 TWILIO, INC. ALL RIGHTS RESERVED. PROGRAMMABLE VIDEO FUNDAMENTALS ALICE APP SERVER TWILIO BOB { identity: “Alice”, video: { room: “Foo”  } } { identity: “Bob”, video: { room: “Foo”  } } Foo ROOM

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© 2017 TWILIO, INC. ALL RIGHTS RESERVED. PROGRAMMABLE VIDEO FUNDAMENTALS ALICE APP SERVER TWILIO BOB { identity: “Alice”, video: { room: “Foo”  } } { identity: “Bob”, video: { room: “Foo”  } } Foo ROOM

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© 2017 TWILIO, INC. ALL RIGHTS RESERVED. PROGRAMMABLE VIDEO FUNDAMENTALS ALICE APP SERVER TWILIO BOB Foo ROOM { identity: “Alice”, video: { room: “Foo”  } } { identity: “Bob”, video: { room: “Foo”  } }

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© 2017 TWILIO, INC. ALL RIGHTS RESERVED. © 2017 TWILIO, INC. ALL RIGHTS RESERVED. • RecordParticipantsOnConnect  Whether or not to start recording Participants • StatusCallback  A URL that Twilio sends webhook requests to on Room events

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© 2017 TWILIO, INC. ALL RIGHTS RESERVED. © 2017 TWILIO, INC. ALL RIGHTS RESERVED. Production Check-list 1. Room Type: P2P or Group? 2. Access Tokens & Room Security 3. Network Conditions 4. Capture Dimensions

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© 2017 TWILIO, INC. ALL RIGHTS RESERVED. SPEAKER LINEUP HELLO, TWILIO Kat King 9:20 AM 9:50 AM 10:30 AM 11:00 AM 11:30 AM BREAK 1:00 PM 1:40 PM 2:20 PM 3:00 PM 3:40 PM 5:00 PM 5:15 PM CHAT FUNDAMENTALS Randy Beiter SYNC FUNDAMENTALS Andres Jaan Tack NOTIFY FUNDAMENTALS Ankita Bhosle VIDEO FUNDAMENTALS Mark Roberts SMS: BEYOND THE BASICS Kenny Hoxworth POWER UP WITH ADD-ONS Edward Kim & Hiral Patel CONTACT CENTER ARCHITECTURE Matthias Damm & Charles Oppenheimer TASKROUTER FUNDAMENTALS Jen Li & Justin Witz AUTHY FUNDAMENTALS Marcelo Jabali GROUP PHOTO (OUTSIDE) AWARD CEREMONY