1# swap-tracks
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3swap-tracks demonstrates how to swap multiple incoming tracks on a single outgoing track.
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5## Instructions
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7### Build swap-tracks
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9```shell
10cargo build --example swap-tracks
11```
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13### Open swap-tracks example page
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15[jsfiddle.net](https://jsfiddle.net/dzc17fga/) you should see two text-areas and a 'Start Session' button.
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17### Run swap-tracks, with your browsers SessionDescription as stdin
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19In the jsfiddle the top textarea is your browser, copy that and:
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21#### Linux/macOS
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23Run `echo $BROWSER_SDP | ./target/debug/examples/swap-tracks`
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25#### Windows
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271. Paste the SessionDescription into a file.
281. Run `./target/debug/examples/swap-tracks < my_file`
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30### Input swap-tracks's SessionDescription into your browser
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32Copy the text that `swap-tracks` just emitted and copy into second text area
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34### Hit 'Start Session' in jsfiddle, enjoy your video!
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36Your browser should send streams to webrtc-rs, and then a stream will be relayed back, changing every 5 seconds.
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38Congrats, you have used WebRTC.rs!
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