Files
rrweb/packages/plugins/rrweb-plugin-canvas-webrtc-record/Readme.md
Justin Halsall aab4c553cb docs: revamp installation docs for esm and umd (#1788)
* docs: revamp installation docs for esm and umd

Document recommended install paths across the main guides and package
READMEs for rrweb, @rrweb/all, @rrweb/record, @rrweb/replay, and
rrweb-player.

Clarify three usage modes: bundler/npm, browser no-build with
import maps and +esm, and legacy UMD fallback.

* Apply suggestions from code review

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Apply formatting changes

* Apply suggestion from @eoghanmurray

Co-authored-by: Eoghan Murray <eoghan@getthere.ie>

* Apply formatting changes

* docs(all): streamline README usage section

Move the guide link next to the import example and remove the
duplicated Usage section to keep docs concise and easier to scan.

* docs(readme): update gzip size badges in zh-cn readme

* docs(plugins): update readme imports to scoped esm packages

Replace `rrweb` default imports and `rrweb.Replayer` usage with
`@rrweb/record` `record` and `@rrweb/replay` `Replayer` in plugin
usage examples.

Also update canvas WebRTC plugin imports to scoped `@rrweb/*`
package names to keep docs aligned with current package structure.

* docs: update docs to prefer scoped esm packages

replace `rrweb` default import examples with `@rrweb/record` and
`@rrweb/replay` across recipes and guides in en/zh-CN.

clarify package selection for new integrations, add `@rrweb/all`
convenience guidance, and refresh CDN/style import snippets for ESM and legacy UMD compatibility.

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Eoghan Murray <eoghan@getthere.ie>
2026-04-01 12:00:00 +08:00

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Markdown

# rrweb canvas webrtc plugin
Plugin that live streams contents of canvas elements via webrtc
## Example of live streaming via `yarn live-stream`
https://user-images.githubusercontent.com/4106/186701616-fd71a107-5d53-423c-ba09-0395a3a0252f.mov
## Instructions
### Record side
```js
// Record side
import { record } from '@rrweb/record';
import { RRWebPluginCanvasWebRTCRecord } from '@rrweb/rrweb-plugin-canvas-webrtc-record';
const webRTCRecordPlugin = new RRWebPluginCanvasWebRTCRecord({
signalSendCallback: (msg) => {
// provides webrtc sdp offer signal & connect message
// make sure you send this to the replayer's `webRTCReplayPlugin.signalReceive(signal)`
sendSignalToReplayer(msg); // example of function that sends the signal to the replayer
},
});
record({
emit: (event) => {
// send these events to the `replayer.addEvent(event)`, how you do that is up to you
// you can send them to a server for example which can then send them to the replayer
sendEventToReplayer(event); // example of function that sends the event to the replayer
},
plugins: [
// add the plugin to the list of plugins, and initialize it via `.initPlugin()`
webRTCRecordPlugin.initPlugin(),
],
recordCanvas: false, // we don't want canvas recording turned on, we're going to do that via the plugin
});
```
### Replay Side
```js
// Replay side
import { Replayer } from '@rrweb/replay';
import { RRWebPluginCanvasWebRTCReplay } from '@rrweb/rrweb-plugin-canvas-webrtc-replay';
const webRTCReplayPlugin = new RRWebPluginCanvasWebRTCReplay({
canvasFoundCallback(canvas, context) {
console.log('canvas', canvas);
// send the canvas id to `webRTCRecordPlugin.setupStream(id)`, how you do that is up to you
// you can send them to a server for example which can then send them to the replayer
sendCanvasIdToRecordScript(context.id); // example of function that sends the id to the record script
},
signalSendCallback(signal) {
// provides webrtc sdp offer signal & connect message
// make sure you send this to the record script's `webRTCRecordPlugin.signalReceive(signal)`
sendSignalToRecordScript(signal); // example of function that sends the signal to the record script
},
});
const replayer = new Replayer([], {
UNSAFE_replayCanvas: true, // turn canvas replay on!
liveMode: true, // live mode is needed to stream events to the replayer
plugins: [webRTCReplayPlugin.initPlugin()],
});
replayer.startLive(); // start the replayer in live mode
replayer.addEvent(event); // call this whenever an event is received from the record script
```
## More info
https://github.com/rrweb-io/rrweb/pull/976