http_live_stream_architecture

HTTP Live Streaming

Overview

Contents

Introduction 5

At a Glance 6

You Can Send Audio and Video Without Special Server Software 6

You Can Send Live Streams or Video on Demand, with Optional Encryption 7

Prerequisites 7

See Also 7

Media Segment Files 11

Index Files (Playlists) 11

Distribution Components 12

Client Component 12

Using HTTP Live Streaming 13

Download the Tools 13

Media Stream Segmenter 13

Media File Segmenter 13

Media Stream Validator 14

Variant Playlist Creator 14

Requirements for Apps 18

Failover Protection 19

Adding Timed Metadata 20

Adding Closed Captions 21

2011-04-01 | © 2011 Apple Inc. All Rights Reserved.

2

Preparing Media for Delivery to iOS-Based Devices 21

Sample Streams 23

Deploying HTTP Live Streaming 25

Creating an HTML Page 25

2011-04-01 | © 2011 Apple Inc. All Rights Reserved.

3

Figures, Tables, and Listings

HTTP Streaming Architecture 8

Figure 1-1 A basic configuration 9

Using HTTP Live Streaming 13

Figure 2-1 Stream alternates 16

Table 2-1 Encoder settings for iPhone, iPod touch, iPad, and Apple TV, 16:9 aspect ratio 22

Table 2-2 Encoder settings for iPhone, iPod touch, iPad, and Apple TV, 4:3 aspect ratio 22

Deploying HTTP Live Streaming 25

Listing 3-1 Serving HTTP Live Streaming in a webpage 25

2011-04-01 | © 2011 Apple Inc. All Rights Reserved.

4

If you are interested in any of the following:

●

Streaming audio or video to iPhone, iPod touch, iPad, or Apple TV

●

X). HTTP Live Streaming supports both live broadcasts and prerecorded content (video on demand). HTTP Live

Streaming supports multiple alternate streams at different bit rates, and the client software can switch streams

intelligently as network bandwidth changes. HTTP Live Streaming also provides for media encryption and user

authentication over HTTPS, allowing publishers to protect their work.

2011-04-01 | © 2011 Apple Inc. All Rights Reserved.

5

Introduction