Bug 305356 – [GStreamer] webrtc/video-vp8-videorange.html is flaky failing

• Status: RESOLVED
• Resolution: FIXED
• Component: WebRTC

[Lauro Moura]

webrtc/video-vp8-videorange.html

diff:
--- /sdk/webkit/layout-test-results/webrtc/video-vp8-videorange-expected.txt
+++ /sdk/webkit/layout-test-results/webrtc/video-vp8-videorange-actual.txt
@@ -2,5 +2,5 @@
 
 
 PASS Setting video exchange
-PASS Track is enabled, video should not be black
+FAIL Track is enabled, video should not be black promise_test: Unhandled rejection with value: "checkVideoBlack timed out expecting false"
 

This test was previously heavily flaky crashing until circa 3048XX@main. But since late December 2025, it's now text-failing much more consistently. For example, using `--depth=1000` in webkit-testhunter for more recent runs, we have the following distribution:

WPE release:
The bot wpe-release completed 300 runs on the interval [304430@main-305430@main]
Frecuency of results for test: webrtc/video-vp8-videorange.html
  54 times [18%]         ->  CRASH
  8 times [2.7%]         ->  TEXT TIMEOUT
  200 times [66.7%]      ->  TEXT
  6 times [2%]           ->  TIMEOUT CRASH
  6 times [2%]           ->  PASS
  9 times [3%]           ->  TEXT CRASH
  3 times [1%]           ->  TIMEOUT
  6 times [2%]           ->  TIMEOUT TEXT
  1 times [0.3%]         ->  TIMEOUT PASS
  7 times [2.3%]         ->  TEXT PASS

WPE debug:
The bot wpe-debug completed 90 runs on the interval [304432@main-305425@main]
Frecuency of results for test: webrtc/video-vp8-videorange.html
  68 times [75.6%]       ->  TEXT
  6 times [6.7%]         ->  CRASH
  3 times [3.3%]         ->  TEXT CRASH
  5 times [5.6%]         ->  PASS
  3 times [3.3%]         ->  TEXT PASS
  5 times [5.6%]         ->  TEXT TIMEOUT

GTK-Release:
The bot gtk-release completed 271 runs on the interval [304431@main-305430@main]
Frecuency of results for test: webrtc/video-vp8-videorange.html
  47 times [17.3%]       ->  CRASH
  81 times [29.9%]       ->  PASS
  1 times [0.4%]         ->  TIMEOUT CRASH
  103 times [38.0%]      ->  TEXT
  3 times [1.1%]         ->  TIMEOUT
  13 times [4.8%]        ->  TEXT PASS
  8 times [3.0%]         ->  TIMEOUT TEXT
  14 times [5.2%]        ->  TEXT TIMEOUT
  1 times [0.4%]         ->  TIMEOUT PASS


GTK-Debug:
The bot gtk-debug completed 75 runs on the interval [304433@main-305425@main]
Frecuency of results for test: webrtc/video-vp8-videorange.html
  15 times [20%]         ->  TEXT
  7 times [9.3%]         ->  CRASH
  30 times [40%]         ->  PASS
  1 times [1.3%]         ->  TEXT CRASH
  19 times [25.3%]       ->  TEXT PASS
  3 times [4%]           ->  TEXT TIMEOUT

[Philippe Normand]

Pull request: https://github.com/WebKit/WebKit/pull/56715

[Philippe Normand]

*** Bug 286859 has been marked as a duplicate of this bug. ***

[EWS]

Committed 305810@main (12b0406851de): <https://commits.webkit.org/305810@main>

Reviewed commits have been landed. Closing PR #56715 and removing active labels.

[Radar WebKit Bug Importer]

<rdar://problem/168438624>