Bug 282322 – [MediaRecorder] intermittent failure with http/wpt/mediarecorder/MediaRecorder-audio-bitrate.html

• Status: NEW
• Component: WebRTC

[Jean-Yves Avenard [:jya]]

Running the test with:

`run-webkit-tests --no-build --debug --repeat=100 -f --child-process=10 --exit-after-n-crashes-or-timeouts=1 --no-retry --exit-after-n-failures=1 LayoutTests/http/wpt/mediarecorder/MediaRecorder-audio-bitrate.html`

Will that intermittently a test will fail with the MediaRecorder never receiving any data on the audio thread.

[Radar WebKit Bug Importer]

<rdar://problem/138898063>

[Jean-Yves Avenard [:jya]]

The error 

```
--- /Volumes/Data/worker/macOS-Ventura-Release-WK2-Tests-EWS/build/layout-test-results/http/wpt/mediarecorder/MediaRecorder-audio-bitrate-expected.txt
+++ /Volumes/Data/worker/macOS-Ventura-Release-WK2-Tests-EWS/build/layout-test-results/http/wpt/mediarecorder/MediaRecorder-audio-bitrate-actual.txt
@@ -1,5 +1,5 @@
 
 PASS Various audio bitrates
-PASS Various audio bitrates with MP4 Opus
+FAIL Various audio bitrates with MP4 Opus assert_not_equals: bitrate 128000 got disallowed value 0
 PASS Various audio bitrates with WebM
 ```

error can be on either of those tests in any combinations.

Logging shows that `MediaRecorderPrivateAVFImpl::audioSamplesAvailable` is never called even after 2.5s