261964 2023-09-22 12:50:08 -0700 Pausing MediaRecorder still continues to call ondataavailable at every timeslice event 2023-09-25 23:40:17 -0700 1 1 1 Unclassified WebKit Web Audio Safari 17 iPhone / iPad iOS 17 RESOLVED FIXED InRadar P2 Normal --- 1 dannycabrera youennf cdumez eric.carlson jer.noble webkit-bug-importer youennf oldest_to_newest 1979414 0 467826 dannycabrera 2023-09-22 12:50:08 -0700 Created attachment 467826 Sample html/javascript to replicate issue When using MediaRecorder with a specified timeslice property, ondataavailable keeps getting called on every timeslice event, regardless if MediaRecorder has been paused. Have replicated this occurring on Safari for iOS 16 + 17 as well as on macOS Ventura 13.5.2 Safari version 16.6. Issue: The attached example has a timeslice of 5000 that is supplied on mediaRecorder.start(5000). When recording is started the mediaRecorder.ondataavailable event will fire every 5 seconds. Upon calling mediaRecorder.pause(), mediaRecorder.onpause event fires and mediaRecorder.requestData() is called which should result in mediaRecorder.ondataavailable triggering one more time and then stop/pause (this is the current behavior with other browsers). Safari iOS 16 + 17 continues to call mediaRecorder.ondataavailable at every timeslice event with the same blob even though mediaRecorder.pause() was called. Expected behavior: Upon calling mediaRecorder.pause(), mediaRecorder.ondataavailable should not continue to fire continuously. Replicating: 1. Launch index.html from attached zip 2. Tap the Record button 3. Record several seconds then tap the Pause button. 4. mediaRecorder.ondataavailable will continue to be called every 5 seconds. Added a debug div that will show the consolelog output on the screen and you'll notice ondataavailable... continue to get outputed every 5 seconds. 1979747 1 webkit-bug-importer 2023-09-25 01:07:16 -0700 <rdar://problem/115979604> 1979749 2 youennf 2023-09-25 01:19:16 -0700 Pull request: https://github.com/WebKit/WebKit/pull/18150 1980076 3 ews-feeder 2023-09-25 23:40:13 -0700 Committed 268433@main (849a8db62663): <https://commits.webkit.org/268433@main> Reviewed commits have been landed. Closing PR #18150 and removing active labels. 467826 2023-09-22 12:50:08 -0700 2023-09-22 12:50:08 -0700 Sample html/javascript to replicate issue MediaRecorderSample.zip application/x-zip-compressed 4287 dannycabrera UEsDBBQAAAAIALh4NleDvFYvBAMAAFkGAAAeAAAATWVkaWFSZWNvcmRlclNhbXBsZS9pbmRleC5o dG1spVXLrhs3DF0nQP+B0bq2brIoCns8QJG0wF20uWgSFF0VGomeUa5GEkSNH/mObvNz/ZJS83Dt pL2bbiyJQ1KHh4dy9eLN29fvf3/4Ebrcu/qb51VZwSnf7gT61UCCjQBVh8qMO973mBXoTiXCvBND 3q++FzffvOpxJw4WjzGkLEAHn9Gz79Ga3O0MHqzG1Xi4BGabHda/YQPG6qxiFzxWcrLOLs76R+gS 7neC8tkhSRXjWhMJSOgWY4fIV+ZzZAgZT1kWh6kIeamiaoI5827ObOwBtFNEDDFxUkzi8nEuHlO9 nIvl5VdQ2XQJkJeIi4lQZxv8ck2vrF8VXlJwJK5Ta+UPiha/g6VBOfuJEUGHtu2Yxe/u4knUlZw8 r2NLHdbsRDPkHPxN3lLzaF0yJ9QhGVH/Oq6VnL4+FUE5RFG/498r72fPvvKLaiAU9UNZnvZMSEOP BUNZ/wVDJbmkMfa6RwaboRUw9puLZfiYNvAynoCCs4bVYLYwyoutd3eHbgsxkC38b0A17DRk3EIT +LZ+A3dbcLjP42bPLVkR872hXjm3nUkf88TTFsIB096F4wZIc+vctjRiwrggnjv9RPMpDN6stLOR Jp39d/CSfBkB1aBjkIm1HdrWMXd/ff6zkqN9mRPr45DnCdAd6scmnMSoiyVmdlRkDf6DvHtV33vO 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