# swap-tracks
swap-tracks demonstrates how to swap multiple incoming tracks on a single outgoing track.
## Instructions
### Open swap-tracks example page
[jsfiddle.net](https://jsfiddle.net/1rx5on86/) you should see two text-areas and a 'Start Session' button.
### Run swap-tracks, with your browsers SessionDescription as stdin
In the jsfiddle the top textarea is your browser, copy that and:
#### Linux/macOS
Run `echo $BROWSER_SDP | cargo run --example swap-tracks`
#### Windows
1. Paste the SessionDescription into a file.
1. Run `cargo run --example swap-tracks < my_file`
### Input swap-tracks's SessionDescription into your browser
Copy the text that `swap-tracks` just emitted and copy into second text area
### Hit 'Start Session' in jsfiddle, enjoy your video!
Your browser should send streams to webrtc-rs, and then a stream will be relayed back, changing every 5 seconds.
Congrats, you have used WebRTC.rs!