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HTTP Live Streaming•      HTTP•          web Server• media encryption•                        10       (media segment file)...
Input                                 MPEG-4 (H.264 video and AAC audio)       MPEG-2 Transport Stream MPEG-2 Transport St...
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Http live streaming 概述

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Rough translation of

http://developer.apple.com/library/ios/documentation/NetworkingInternet/Conceptual/StreamingMediaGuide/StreamingMediaGuide.pdf

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Http live streaming 概述

  1. 1. HTTP Live Streaming• HTTP• web Server• media encryption• 10 (media segment file)• Index file/playlist media segment file• media segment file Playlist• For Video on Demand: ! MPEG-4 video, Quicktime movies with H.264 video compression. ! audio files with AAC, mp3 compression.• For Live streams: ! MPEG-2 transport streams carrying H.264 video, AAC audio or MP3 audio Server, distribution, clientServer DistributionDistribution web server client ClientClient! Client iOS 3.0 & Safari 4.0 Later H.264 video and AAC audio MPEG-2Transport stream Software Stream Segmenter 10index file HTTP index file URL
  2. 2. Input MPEG-4 (H.264 video and AAC audio) MPEG-2 Transport Stream MPEG-2 Transport Stream .ts Apple Inc. Apple Stream SegmenterAudio-only MPEG elementary AAC with ADTS headers MP3Segmenter MPEG-2 Transport Stream Index fileIndex file metadata Index file .m3u8 playlistServer Distribution ClientServer media encoder media stream segmenter MPEG-2 transport streams with H.264 video and AAC audio MPEG-2 transport / MPEG elementary audio streams (AAC with ADTSheaders or MP3)Stream SegmenterIs a process (typically software) local network Transport Stream media files Segment reconstruct Index file mdeia files Index file Index media file segment files! Media Segments .ts Index file .M3U8File Segmenter media file codec media files MPEG streamsegment File Segmenter Stream Segmenter ” ” ” ”Distribution web server HTTP media files / index filesClient index file URL Index file media file streams media files 2011.09.19 Apple Inc. CC-by-sa

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