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zebra-report: deploy — fresh MediaStream per remote video track

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russell@unturf.com 2026-06-03 11:01:05 -04:00
parent 8a055ea9fe
commit aeb61c5ce0
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1 changed files with 19 additions and 10 deletions
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29
zebra-report/zebra-spaces.html
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@ -2441,20 +2441,29 @@ async function sfuSubscribe(){
logLine('', 'sfu ontrack: kind=' + kind + ' pub=' + pubHex +
' track=' + ev.track.kind + ' mute=' + ev.track.muted + ' state=' + ev.track.readyState);
}
/* Stream-identity guard on removeFn: when a publisher supplants
* themselves (typical: hard refresh — new SFU peer_id same pubkey +
* kind), the OLD track's mute → ended → removeFn would tear down the
* tile that the NEW track just installed. Only remove if the stream
* we registered against is still the one in the store for this pub. */
/* MSID-supplant safety: the SFU re-uses the same streamID
* (`shortPub-kind`) when a publisher supplants themselves. WebRTC
* merges the new track into the EXISTING MediaStream — ev.streams[0]
* is literally the same instance as before, containing both the
* dead old track AND the new live one. Setting srcObject to that
* stream doesn't switch the playing track; the video element keeps
* showing the (now-ended) old track's last frame and reports muted.
* Construct a fresh MediaStream containing only the new track so
* the video element binds to the new RTP flow cleanly.
*
* Stream-identity guard on removeFn: when the OLD track's mute →
* ended → removeFn would tear down the tile that the NEW track
* just installed. Only remove if the stream we registered against
* is still the one in the store for this pub. */
if (kind === 'screen'){
const s = ev.streams[0];
const s = new MediaStream([ev.track]);
screenStreams.set(pubHex, s);
renderScreenTile(pubHex, s);
watchVideoTrackForRemoval(ev.track, () => { if (screenStreams.get(pubHex) === s) removeScreenTile(pubHex); }, VIDEO_REMOVE_MUTE_WINDOW_SCREEN_MS);
return;
}
if (kind === 'camera'){
const s = ev.streams[0];
const s = new MediaStream([ev.track]);
cameraStreams.set(pubHex, s);
renderCameraTile(pubHex, s);
watchVideoTrackForRemoval(ev.track, () => { if (cameraStreams.get(pubHex) === s) removeCameraTile(pubHex); }, VIDEO_REMOVE_MUTE_WINDOW_MS);
@ -2464,7 +2473,7 @@ async function sfuSubscribe(){
/* a publisher is sharing their gameplay (Region-Capture cropped
* iframe). Route to its own TILE_KIND so it coexists with a
* normal screen-share from the same person. */
const s = ev.streams[0];
const s = new MediaStream([ev.track]);
gameStreams.set(pubHex, s);
renderVideoTile('gameshare', pubHex, s);
watchVideoTrackForRemoval(ev.track, () => { if (gameStreams.get(pubHex) === s) removeVideoTile('gameshare', pubHex); }, VIDEO_REMOVE_MUTE_WINDOW_SCREEN_MS);
@ -3861,8 +3870,8 @@ 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">2026-06-03</span><br>
md5 <span class="stamp-md5">5bba3e681d0b4c34ede5d0f0bb4da138</span><br>
sha256 <span class="stamp-sha">9445032ab40c1b6bbd69eda3b8a6b33c4b3ff849e1a5c23955e4f0d9619d4540</span><br>
md5 <span class="stamp-md5">c84ac1d4ba2674e2927e3b741b593dfb</span><br>
sha256 <span class="stamp-sha">95f894002cb10ec9fdf575fbc04d6f5c55a99027fb2cb5d93c72ac3b54cb614f</span><br>
<span style="color:#bbb">hashes are of this page with these two fields zeroed — to verify, blank them and re-hash</span><br>
<span style="color:#bbb">one self-contained file — <strong>save a copy</strong> and verify against these hashes; point at your own servers with ?signal= and ?turncred=, or <a href="host-your-own.html" style="color:#999">host your own community</a></span>
</footer>