Http live streaming technical presentation

Jan 21, 2016Download as PPTX, PDF1 like549 views

Presentation to show how the video is transferred using ffmpeg, ffserver that can be played in mobile and desktop browsers. HTTP : Protocol to transfer data in web Streaming : Method of transferring continuous data

Buddhi Bal Thapa
MScIT 1st semester
1407191244
Technical Presentation

Contents
Definition
Scope
Tools used
How it works?
Examples
Limitations
References

Definition
HTTP : Protocol to transfer data in web.
Streaming : Method of transferring continuous
data.

Scope
To show how live streaming work in internet
with http protocol and ffserver.

Tools used
Ubuntu OS
FFmpeg
FFserver
Web browser or VLC

How it works? ...
Feed data to the ffserver using ffmpeg.
FFserver sends the received data to the
request source.
Request
http://<ip address>:<port>/<feedfile>
ffmpeg -i v4l2 /dev/video0
http://localhost:8090/livestream.ffm

How it works? ...
Response
http://<ip address>:<port>/<request url>
<video>
<source src=/slideshow/http-live-streaming-technical-presentation/57320100/"http:/localhost:8090/livestream">
</video

How it works? ...
ffserver.conf
Port 8090
MaxHTTPConnections 2000
MaxBandwidth 1000
CustomLog -
<Feed livestream.ffm>
File /tmp/feed1.ffm
FileMaxSize 200K
ACL allow 127.0.0.1
</Feed>
<Stream livestream>
Format webm
Feed livestream.ffm
VideoCodec libvpx
VideoFrameRate 30
VideoBitRate 512
VideoSize 320x240
AVOptionVideo preset medium
AudioCodec libvorbis
AudioBitRate 128
AudioChannels 2
</Stream>

Example
www.youtube.com
www.twitch.tv
www.wowza.com
www.ustream.tv

Limitations
Loss of data
More bandwidth
More processing powered system.

References
https://ffmpeg.org
https://trac.ffmpeg.org/wiki/Streaming%20media%20with%20ffserver
www.ffmpeg.org/sample.html
https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol

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Http live streaming technical presentation

1. Buddhi Bal Thapa MScIT 1st semester 1407191244 Technical Presentation

2. HTTP Live streaming with ffserver

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

4. Definition HTTP : Protocol to transfer data in web. Streaming : Method of transferring continuous data.

5. Scope To show how live streaming work in internet with http protocol and ffserver.

6. Tools used Ubuntu OS FFmpeg FFserver Web browser or VLC

7. How it works?

8. How it works?

9. How it works? ... Feed data to the ffserver using ffmpeg. FFserver sends the received data to the request source. Request http://<ip address>:<port>/<feedfile> ffmpeg -i v4l2 /dev/video0 http://localhost:8090/livestream.ffm

10. How it works? ... Response http://<ip address>:<port>/<request url> <video> <source src=/slideshow/http-live-streaming-technical-presentation/57320100/"http:/localhost:8090/livestream"> </video

11. How it works? ... ffserver.conf Port 8090 MaxHTTPConnections 2000 MaxBandwidth 1000 CustomLog - <Feed livestream.ffm> File /tmp/feed1.ffm FileMaxSize 200K ACL allow 127.0.0.1 </Feed> <Stream livestream> Format webm Feed livestream.ffm VideoCodec libvpx VideoFrameRate 30 VideoBitRate 512 VideoSize 320x240 AVOptionVideo preset medium AudioCodec libvorbis AudioBitRate 128 AudioChannels 2 </Stream>

12. Example www.youtube.com www.twitch.tv www.wowza.com www.ustream.tv

13. Limitations Loss of data More bandwidth More processing powered system.

14. References https://ffmpeg.org https://trac.ffmpeg.org/wiki/Streaming%20media%20with%20ffserver www.ffmpeg.org/sample.html https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol

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Http live streaming technical presentation

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