The document provides an overview of HTTP Live Streaming (HLS), detailing its definition, scope, and the tools used, particularly focusing on ffmpeg for segmenting video. It explains how HLS works by creating .ts files and an .m3u8 playlist, along with examples of commands and generated files. Limitations include high disk space consumption and compatibility issues with some browsers.

1. Technical Presentation
Buddhi Bal Thapa
MScIT 2nd Semester
1407191244

2. Apple HLS

3. Contents
Definition
Scope
Tools used
How it works?
Example
Limitations
References

4. Definition
HTTP Live Streaming is a way to send audio
and video over HTTP from a web server to
client software on the desktop or to iOS-
based devices or android.

5. Scope
To show how HTTP Live Streaming works

6. Tools required
Media stream segmenter (Apple devices)
ffmpeg (Ubuntu/Windows PC)

7. How it works?
ffmpeg splits the audio video data to series of
.ts files and automatically creates .m3u8 file

8. How it works?

9. How it works?

10. How it works?

11. How it works?
Example
Media segmenter
ffmpeg -i inputvideo.mp4 -profile:v
baseline -level 3.0 -s 640x360 -
start_number 0 -hls_time 10 -
hls_list_size 0 -hls_allow_cache 0 -f hls
640x360.m3u8

12. How it works?
Examples
Generated .m3u8 file
#EXT-X-VERSION:3
#EXTM3U
#EXT-X-TARGETDURATION:10
#EXT-X-MEDIA-SEQUENCE:1
#EXTINF:10.0,
http://media.example.com/segment1.ts
#EXTINF:9.5,
http://media.example.com/segment2.ts
#EXT-X-ENDLIST

13. How it works?
Examples
<video autoplay="autoplay" >
<source type="application/x-mpegURL"
src=“index.m3u8">
</video>

14. Limitations
Consumes more disk space
Requires high performing devices
Some browsers are not supported

15. References
www.developer.apple.com
www.fmpeg.com/all.html#hls
www.streamingmedia.com/Articles/Editorial/What-
Is-.../What-is-HLS-(HTTP-Live-Streaming)-
78221.aspx
www.encoding.com/http-live-streaming-hls/

16. Questions?