# rtp-to-webrtc
rtp-to-webrtc demonstrates how to consume a RTP stream video UDP, and then send to a WebRTC client.

With this example we have pre-made GStreamer and ffmpeg pipelines, but you can use any tool you like!

## Instructions
### Download rtp-to-webrtc
```
export GO111MODULE=on
go get github.com/pion/webrtc/v3/examples/rtp-to-webrtc
```

### Open jsfiddle example page
[jsfiddle.net](https://jsfiddle.net/z7ms3u5r/) you should see two text-areas and a 'Start Session' button


### Run rtp-to-webrtc with your browsers SessionDescription as stdin
In the jsfiddle the top textarea is your browser's SessionDescription, copy that and:

#### Linux/macOS
Run `echo $BROWSER_SDP | rtp-to-webrtc`

#### Windows
1. Paste the SessionDescription into a file.
1. Run `rtp-to-webrtc < my_file`

### Send RTP to listening socket
On startup you will get a message `Waiting for RTP Packets`, you can use any software to send VP8 packets to port 5004. We also have the pre made examples below


#### GStreamer
```
gst-launch-1.0 videotestsrc ! video/x-raw,width=640,height=480,format=I420 ! vp8enc error-resilient=partitions keyframe-max-dist=10 auto-alt-ref=true cpu-used=5 deadline=1 ! rtpvp8pay ! udpsink host=127.0.0.1 port=5004
```

#### ffmpeg
```
ffmpeg -re -f lavfi -i testsrc=size=640x480:rate=30 -vcodec libvpx -cpu-used 5 -deadline 1 -g 10 -error-resilient 1 -auto-alt-ref 1 -f rtp rtp://127.0.0.1:5004
```

### Input rtp-to-webrtc's SessionDescription into your browser
Copy the text that `rtp-to-webrtc` just emitted and copy into second text area

### Hit 'Start Session' in jsfiddle, enjoy your video!
A video should start playing in your browser above the input boxes.

Congrats, you have used Pion WebRTC! Now start building something cool