Intro To HLS(http live streaming)

Rand Grahamrmcore.com

Why Should You Care About HLS?

Used to stream the 2014 World Cup

Advantages◦ Uses Standard Web Server◦ ABR (Adaptive Bit Rate)◦ Built into iOS and OS X

photo courtesy: warrenski

Overview

See: Draft of RFCPass a URL to a play list fileTransport stream .TS containerPreferred codecs: H.264 AACBlock Diagram from Apple

Sample Playlist File .m3u8

#EXTM3U#EXT-X-TARGETDURATION:10#EXT-X-VERSION:3#EXT-X-MEDIA-SEQUENCE:0#EXT-X-PLAYLIST-TYPE:VOD#EXT-X-INDEPENDENT-SEGMENTS#EXTINF:8.40000,bb0.ts#EXTINF:7.68000,bb1.ts#EXTINF:9.68000,bb2.ts#EXT-X-ENDLIST

Tools To Create Stream Files

ffmpeg

Apple Tools:mediastreamsegmentermediafilesegmentermediastreamvalidator

Actual ffmpeg command

$ ffmpeg -re -i input.mkv -vcodec libx264 -preset \ veryfast -maxrate 3000k \-bufsize 6000k -pix_fmt yuv420p -g 50 -acodec \ libmp3lame -b:a 128k -ac 2 \-ar 44100 -f flv rtmp://live.justin.tv/app/<stream key> \-ZOMG! if you think this is complicated \-have you tried reading the ffmpeg source code?

Is it cross platform?

Built into iOSJavaScript: videojs, clapprAndroid: ExoPlayerDesktop: VLC

Thanks!

ANY QUESTIONS?

Connect with me on twitter: @rdg_rmcoreRead more at my website:http://rmcore.com/

CREDITS

Special thanks to all the people who made and released these awesome resources for free:◦ Presentation template by SlidesCarnival◦ Photo Credits:◦ World Cup photo by warrenski◦ HLS block diagram by Apple◦ Ultimate swiss army knife◦ Will It Blend on Youtube