239978 2022-05-02 12:19:04 -0700 replaceTrack with different constraints stops sending packets 2022-05-06 03:27:30 -0700 1 1 1 Unclassified WebKit WebRTC Safari 15 Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 makarand youennf eric.carlson ews-watchlist glenn hta jer.noble ostap_mal philipj sergio tommyw webkit-bug-importer youennf oldest_to_newest 1865912 0 makarand 2022-05-02 12:19:04 -0700 One of our (twilio) customers noticed this bug. They found it on iOS 15.4, but I see that we can reproduce it on Safari 15.4 running on MacOS as well. Easy repro steps using https://codepen.io/makarand-patwardhan/pen/yLvyJgB 1. Click on Start Demo: This will establish webrtc between two peer connection with one party publishing an audio track 2. Notice that packets are flowing nicely between Peers. 3. Check on Music Mode and click on Update Track This will cause a new audio track to get acquired using different constrains than used originally. This new track is then used to replaceTrack (https://developer.mozilla.org/en-US/docs/Web/API/RTCRtpSender/replaceTrack) At this point notice that the packets stop flowing and after about 20 seconds you see an error "A MediaStreamTrack ended due to a capture failure" on console. Notice that in Step 3 if you did not change the music Mode (that is use the same constraints as before you do not see this error) 1865914 1 youennf 2022-05-02 12:26:56 -0700 This might be related or similar to https://bugs.webkit.org/show_bug.cgi?id=239956, probably a fall out of using VPIO for audio rendering. 1865915 2 webkit-bug-importer 2022-05-02 12:27:10 -0700 <rdar://problem/92624773> 1866421 3 458788 youennf 2022-05-04 04:15:39 -0700 Created attachment 458788 Patch 1866463 4 458788 eric.carlson 2022-05-04 08:27:31 -0700 Comment on attachment 458788 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=458788&action=review > Source/WebCore/ChangeLog:9 > + We should always reconfigure thr microphone processor even if we are not using it, s/thr/the/ 1866493 5 makarand 2022-05-04 09:27:47 -0700 Hello Youenn, Thank you for looking at this - Can you please let us know which version will have the fix ? And in the meanwhile what can our customer do to workaround this? 1866757 6 youennf 2022-05-04 23:39:40 -0700 In the fiddle, the workaround is to not stop the audio track before getting another one (or stop it after getting the new one). Another approach is to stop audio rendering just before starting capture. And restart audio rendering once capture started. 1866762 7 458853 youennf 2022-05-04 23:48:28 -0700 Created attachment 458853 Patch for landing 1866794 8 ews-feeder 2022-05-05 02:50:07 -0700 Committed r293827 (250300@main): <https://commits.webkit.org/250300@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 458853. 1867153 9 ostap_mal 2022-05-06 03:27:30 -0700 Hello, Which version will have the fix? We have tried one of the latest builds in https://webkit.org/build-archives/#mac-monterey-x86_64%20arm64 MAY 6, 2022, 12:25 PM GMT+3, and we could still reproduce the issue. 458788 2022-05-04 04:15:39 -0700 2022-05-04 23:48:22 -0700 Patch bug-239978-20220504131537.patch text/plain 2028 youennf U3VidmVyc2lvbiBSZXZpc2lvbjogMjkzNzY3CmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViQ29yZS9D aGFuZ2VMb2cgYi9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKaW5kZXggOTI2MDlkZjdmYjliZmE5 NmQ1M2NiMGI1YzE1MjI2ZGM4ZGRmYjc2NC4uMjU3NmE4ODMzZGY3N2MxNTk1MjJkZjdhNTZkYzI3 NTU4ZjkzNDA0OSAxMDA2NDQKLS0tIGEvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCisrKyBiL1Nv dXJjZS9XZWJDb3JlL0NoYW5nZUxvZwpAQCAtMSwzICsxLDIwIEBACisyMDIyLTA1LTA0ICBZb3Vl bm4gRmFibGV0ICA8eW91ZW5uQGFwcGxlLmNvbT4KKworICAgICAgICByZXBsYWNlVHJhY2sgd2l0 aCBkaWZmZXJlbnQgY29uc3RyYWludHMgc3RvcHMgc2VuZGluZyBwYWNrZXRzCisgICAgICAgIGh0 dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVnLmNnaT9pZD0yMzk5NzgKKyAgICAgICAgPHJk YXI6Ly9wcm9ibGVtLzkyNjI0NzczPgorCisgICAgICAgIFJldmlld2VkIGJ5IE5PQk9EWSAoT09Q 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