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Live indicator #922

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Live indicator #922

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84c5a62
added live indicator
cerahmed Jan 23, 2026
e7f23e7
added live_indicator option in config
cerahmed Jan 23, 2026
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88 changes: 88 additions & 0 deletions custom_components/webrtc/www/webrtc-camera.js
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,25 @@ class WebRTCCamera extends VideoRTC {
* Step 1. Called by the Hass, when config changed.
* @param {Object} config
*/

constructor() {
super();
this._lastFrameTime = 0; // Timestamp of the last received video frame
this._liveCheckInterval = null; // Interval for checking video playback
}

/**
* Called to update the timestamp of the last received video frame.
*/
updateHeartbeat() {
this._lastFrameTime = Date.now();

// if the video is still there, ask for the next frame notification
if (this.video && this.video.requestVideoFrameCallback) {
this.video.requestVideoFrameCallback(() => this.updateHeartbeat());
}
}

setConfig(config) {
if (!config.url && !config.entity && !config.streams) throw new Error('Missing `url` or `entity` or `streams`');

Expand Down Expand Up @@ -38,6 +57,7 @@ class WebRTCCamera extends VideoRTC {
* ui: boolean,
* style: string,
* background: boolean,
* live_indicator: boolean,
*
* server: string,
*
Expand Down Expand Up @@ -112,6 +132,20 @@ class WebRTCCamera extends VideoRTC {
nextStream(reload) {
this.streamID = (this.streamID + 1) % this.config.streams.length;

// when stream has changed (substream), reset timer and stop heartbeat
if (this.streamID > 0 && this.config.live_indicator == true) { // ensures video element exists
// Reset the time for the watchdog
this._lastFrameTime = 0;

// Also instantly reset the live dot to red
if (this.shadowRoot) {
const dot = this.shadowRoot.querySelector('.live-dot');
if (dot) {
dot.classList.remove('live');
}
}
}

const stream = this.config.streams[this.streamID];
this.config.url = stream.url;
this.config.entity = stream.entity;
Expand Down Expand Up @@ -178,6 +212,38 @@ class WebRTCCamera extends VideoRTC {
}).catch(er => {
this.setStatus('error', er);
});

// when stream is connected, hook the video frame callback to track live indicator
if (this.video && this.video.requestVideoFrameCallback && this.config.live_indicator == true) {
this.video.requestVideoFrameCallback(() => this.updateHeartbeat());
}

// start watchdog timer to update live indicator
if (!this._liveCheckInterval && this.config.live_indicator == true) {
this._liveCheckInterval = setInterval(() => {
const dot = this.shadowRoot.querySelector('.live-dot');
if (!dot) return;

const now = Date.now();
// Check if the last frame arrived less than 500ms ago
const isPlaying = (now - this._lastFrameTime) < 500;

if (isPlaying) {
dot.classList.add('live');
} else {
dot.classList.remove('live');
}
}, 500);
}
}

ondisconnect() {
// when stream is disconnected, cleanup the live indicator watchdog timer
if (this._liveCheckInterval) {
clearInterval(this._liveCheckInterval);
this._liveCheckInterval = null;
}
super.ondisconnect();
}

onopen() {
Expand Down Expand Up @@ -249,13 +315,35 @@ class WebRTCCamera extends VideoRTC {
opacity: 0.6;
pointer-events: auto;
}
.live-dot-wrapper {
display: flex;
flex-grow: 1;
justify-content: end;
}
.live-dot {
width: 8px;
height: 8px;
border-radius: 50%;
background-color: #D2122E;
align-self: center;
transition: background-color 0.3s, box-shadow 0.3s;
}
.live-dot.live {
background-color: #90EE90;
}
</style>
<ha-card class="card">
<div class="player">
<div class="ptz-transform"></div>
</div>
<div class="header">
<div class="status"></div>
${ this.config.live_indicator == true ? `
<div class="live-dot-wrapper">
<div class="live-dot"></div> <div class="status"></div>
</div>
` : ''
}
<div class="mode"></div>
</div>
</ha-card>
Expand Down