Bug 302226 – Crash: com.apple.WebKit.WebContent at AVFCore: -[AVAssetWriterInputHelper requestMediaDataWhenReadyOnQueue:usingBlock:]

• Component: Media
• Status: RESOLVED FIXED

[Jean-Yves Avenard [:jya]]

```
Last Exception Backtrace:
Last Exception Backtrace:
0   CoreFoundation                	       0x1875b2994 __exceptionPreprocess + 164 (/Library/Caches/com.apple.xbs/Sources/CoreFoundation/CoreFoundation/ObjC.subproj/NSException.m:249)
1   libobjc.A.dylib               	       0x184491814 objc_exception_throw + 88 (/Library/Caches/com.apple.xbs/Sources/objc4/runtime/objc-exception.mm:356)
2   AVFCore                       	       0x19a5dfb58 -[AVAssetWriterInputHelper requestMediaDataWhenReadyOnQueue:usingBlock:] + 128 (/Library/Caches/com.apple.xbs/Sources/AVFoundation_AVFCore/Fig/AVAssetWriterInput.m:3970)
3   WebCore                       	       0x1a4293bec WebCore::MediaRecorderPrivateWriterAVFObjC::close(WTF::Deque<WTF::UniqueRef<WebCore::MediaSamplesBlock>, 0ul>&&, WTF::MediaTime const&) + 1864 (/Library/Caches/com.apple.xbs/Sources/WebCore/Source/WebCore/platform/mediarecorder/cocoa/MediaRecorderPrivateWriterAVFObjC.mm:268)
4   WebCore                       	       0x1a58e0030 WebCore::MediaRecorderPrivateWriter::close() + 96 (/Library/Caches/com.apple.xbs/Sources/WebCore/Source/WebCore/platform/mediarecorder/MediaRecorderPrivateWriter.cpp:98) [inlined]
5   WebCore                       	       0x1a58e0030 WebCore::MediaRecorderPrivateEncoder::stopRecording()::$_1::operator()() const::&#39;lambda&#39;()::operator()() const::&#39;lambda&#39;()::operator()() const + 184 (/Library/Caches/com.apple.xbs/Sources/WebCore/Source/WebCore/platform/mediarecorder/MediaRecorderPrivateEncoder.cpp:921) [inlined]
6   WebCore                       	       0x1a58e0030 decltype(std::declval<WebCore::MediaRecorderPrivateEncoder::stopRecording()::$_1::operator()() const::&#39;lambda&#39;()::operator()() const::&#39;lambda&#39;()>()()) 
```

objC exception thrown when calling `-[AVAssetWriterInputHelper requestMediaDataWhenReadyOnQueue:usingBlock:]`

rdar://164271457

[Jean-Yves Avenard [:jya]]

Pull request: https://github.com/WebKit/WebKit/pull/53650

[EWS]

Committed 302779@main (cbd4da15ac4a): <https://commits.webkit.org/302779@main>

Reviewed commits have been landed. Closing PR #53650 and removing active labels.