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zebra-spaces: deploy audio priority='high' (wiggle-storm fix mirror)

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russell@unturf.com 2026-06-04 14:38:14 -04:00
parent 80a936fe7b
commit 50452361ae
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1 changed files with 19 additions and 3 deletions
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zebra-report/zebra-spaces.html
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@ -3369,17 +3369,33 @@ async function setSenderBitrate(sender){
* for speech. Opus VBR only spends what it needs; idle music stays around
* 200–300 kbps and only peaks claim the ceiling. */
p.encodings[0].maxBitrate = musicMode ? 256000 : 40000;
/* Audio rides ahead of video in the sender's egress queue. Fox
* 2026-06-04: wiggling a terminal window caused 1-5s cutouts on
* listeners even with a 4s playoutDelayHint buffer. Cause: the
* wiggle triggered a big screen-share keyframe burst that
* monopolized the egress queue; audio packets queued behind it
* arrived too late and the buffer drained. Setting priority='high'
* + networkPriority='high' on audio tells the browser to drain
* audio first when its outgoing queue is contended. Video keeps
* the default ('low' on the screen/camera senders below). */
p.encodings[0].priority = 'high';
p.encodings[0].networkPriority = 'high';
await sender.setParameters(p);
} catch(_){}
}
/* explicit bitrate setter for non-mic senders (screen video, screen audio).
* setSenderBitrate above is locked to the mic's musicMode value. */
* setSenderBitrate above is locked to the mic's musicMode value. Audio kind
* gets high priority like the mic; video kind gets low priority so audio
* wins the egress queue under contention. */
async function setSenderMaxBitrate(sender, bps){
if (!sender) return;
try {
const p = sender.getParameters();
if (!p.encodings || !p.encodings.length) p.encodings = [{}];
p.encodings[0].maxBitrate = bps;
const isVideo = sender.track && sender.track.kind === 'video';
p.encodings[0].priority = isVideo ? 'low' : 'high';
p.encodings[0].networkPriority = isVideo ? 'low' : 'high';
await sender.setParameters(p);
} catch(_){}
}
@ -5925,8 +5941,8 @@ logLine('', 'ready — pick a handle, type a rendezvous code, enter the space');
<footer style="margin:2.2rem auto 0;font-size:0.65rem;color:#999;line-height:1.7;word-break:break-all;font-family:monospace">
<span id="pi-seal" style="color:#777;cursor:default;user-select:none" title="">page integrity</span> &nbsp;·&nbsp; built <span class="stamp-date">2026-06-04</span><br>
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md5 <span class="stamp-md5">a120f5b4723d88b8f6d4518fa647e390</span><br>
sha256 <span class="stamp-sha">82d23c2333f6d6ab0f3c2149725d274a44807ec0a878ebf1ddb59cf07c095197</span><br>
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</footer>