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Automatic quality switching parameters are set when calling initRemoteDisplay() function:
| Code Block | ||||
|---|---|---|---|---|
| ||||
// Create remote display item to show remote streams
state.setDisplay(initRemoteDisplay(const displayOptions = {
div: document.getElementById("remoteVideo")quality:true,
room: state.room,autoAbr: true
};
const abrOptions = {
peerConnectionthresholds: state.pc,[
displayOptions {parameter: "nackCount", maxLeap: {10},
{parameter: "freezeCount", publishermaxLeap: false10},
quality{parameter: true,
"packetsLost", maxLeap: 10}
],
type abrKeepOnGoodQuality: falseABR_KEEP_ON_QUALITY,
abrTryForUpperQuality: ABR_TRY_UPPER_QUALITY,
abr: true interval: ABR_QUALITY_CHECK_PERIOD
};
const display = initRemoteDisplay(
state.room,
document.getElementById("remoteVideo"),
displayOptions, abrOptions,
abrKeepOnGoodQuality: 20000,
createDefaultMeetingController,
createDefaultMeetingModel,
abrTryForUpperQuality: 30000createDefaultMeetingView,
}oneToOneParticipantFactory(remoteTrackProvider(state.room))
}));
state.setDisplay(display);
// Start WebRTC negotiation
await state.room.join(state.pc, null, null, 1); |
Where:
- abr - enables or disables automatic quality switching
- abrKeepOnGoodQuality - interval in milliseconds to play a current video quality if there are no WebRTC statistics data leaps
- abrTryForUpperQuality - after this interval in milliseconds player will try to switch to a higher available video quality if there are no WebRTC statistics data leaps
- interval - WebRTC statistics data collection interval in miliiseconds
If any quality is manually chosen, it will be playing even if WebRTC statistics values are bad.
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