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Safari does not allow video elements without renderer to autoplay #58284

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Safari does not allow video elements without renderer to autoplay #58284

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Safari does not allow video elements without renderer to autoplay
youennf Mar 5, 2026
b90486b
Update webrtc/RTCRtpSender-replaceTrack.https.html
youennf Mar 5, 2026
20dae3a
Apply suggestions from code review
youennf Mar 5, 2026
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14 changes: 8 additions & 6 deletions webrtc/RTCRtpSender-replaceTrack.https.html
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Original file line number Diff line number Diff line change
Expand Up @@ -298,14 +298,15 @@
pc2.ontrack = (e) => {
v.srcObject = new MediaStream([e.track]);
};
const metadataToBeLoaded = new Promise((resolve) => {
v.addEventListener('loadedmetadata', () => {
const metadataToBeLoadedAndPlaying = new Promise((resolve) => {
v.addEventListener('loadedmetadata', async () => {
await v.play();
resolve();
});
});
exchangeIceCandidates(pc1, pc2);
exchangeOfferAnswer(pc1, pc2);
await metadataToBeLoaded;
await metadataToBeLoadedAndPlaying;
await detectSignal(t, v, 20);
await sender.replaceTrack(track2);
await detectSignal(t, v, 250);
Expand All @@ -328,14 +329,15 @@
pc2.ontrack = (e) => {
v.srcObject = new MediaStream([e.track]);
};
const metadataToBeLoaded = new Promise((resolve) => {
v.addEventListener('loadedmetadata', () => {
const metadataToBeLoadedAndPlaying = new Promise((resolve) => {
v.addEventListener('loadedmetadata', async () => {
await v.play();
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@alvestrand alvestrand Mar 5, 2026

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and here.

resolve();
});
});
exchangeIceCandidates(pc1, pc2);
exchangeOfferAnswer(pc1, pc2);
await metadataToBeLoaded;
await metadataToBeLoadedAndPlaying;
await detectSignal(t, v, 20);
await sender.replaceTrack(null);
await sender.replaceTrack(track2);
Expand Down