Project:Puppeteer

TelePi

TelePi is an open-source telepresence platform that allows people to log-into robots and be able to control them remotely in a seamless manner.

Requirements

• Extendable
• Multi-user
• Multiple hardware

Progress

• Still gathering requirements and doing initial technology tests

Technical details

System diagram

<graphviz border='frame' format='svg' > digraph rfboard{

  rankdir=LR;
  size="8,5!";
  
  client [label="client",shape=box];

  subgraph cluster_0 {

node [style=filled];

       label = "bot";

       web_service [label="web service",shape=box];
       media_streamer [label="media streamer",shape=box];
       hardware [label="control hardware",shape=box];
       
       web_service -> hardware;
  }   

  media_streamer -> client [label="media"];
  client -> web_service [label="control"];
  client ->  media_streamer [label="media"];

}

</graphviz>

Streaming protocols analysis

Gstreamer

• Pros
  • Very fast - HW accelerated
  • Flexible to develop upon
• Cons
  • Tricky to display in browser

MJPEG

• Pros
  • Great browser support in every browser
  • Speed to be tested, but should be decent
• Cons
  • High bitrate (~2mbit/s at 720p 15fps)
  • Video only, need a separate solution for audio

ffmpeg + RMTP + JWplayer

• Pros
  • Decent browser support
• Cons
  • High latency
  • Needs flash, so won't work on IOS and some browsers

Contributors

• mentar
• Eric M
• Ted