1893545 - [wpt-sync] Sync PR 45920 - [aspect-ratio] Fix webm file that caused test flakiness

Status: RESOLVED FIXED

(Core :: Layout, task, P4)

Description

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Sync web-platform-tests PR 45920 into mozilla-central (this bug is closed when the sync is complete).

PR: https://github.com/web-platform-tests/wpt/pull/45920
Details from upstream follow.

David Grogan <[e-mail]> wrote:

[aspect-ratio] Fix webm file that caused test flakiness

Test that uses this webm file started flaking when the file was changed
last month in
https://github.com/web-platform-tests/wpt/commit/8bfc72a4f700cd663e737b2425a79bac9874a409

The linked chrome bug says the test is flaky on mac and fails on linux,
but laking a dashboard shows it is actually flaky on all platforms on
the bots. See go/offqr

The test consistently fails on my local mac.

Simply re-encoding[1] the video with the vp9 version on my machine[2]
makes the test pass on chrome and doesn't regress on safari or firefox.
So give the re-encoded video a try?

[1] ffmpeg -i support/2x2-green.webm -vf scale=iw1:ih1:flags=neighbor -c:v libvpx-vp9 -preset slow -crf 18 output.webm
[2] Lavc60.31.102 libvpx-vp9 instead of Lavc60.3.100 libvpx-vp9

Fixed: 333058973
Change-Id: If5f488b1bd4cbc16fec669dda682b8c2be97abfc
Reviewed-on: https://chromium-review.googlesource.com/5492281
WPT-Export-Revision: 8adbfca4915449b907ebe2fe0c486c2281e3ca26

Comment 1

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Pushed to try (stability) https://treeherder.mozilla.org/#/jobs?repo=try&revision=4267f5bddf03233744e4bea09b95f8ed059bfde5

Comment 2

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

CI Results

Ran 0 Firefox configurations based on mozilla-central, and Firefox, Chrome, and Safari on GitHub CI

Total 1 tests

Status Summary

Firefox

PASS: 1

Chrome

PASS: 1

Safari

PASS: 1

Links

GitHub PR Head
GitHub PR Base

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/17e29404d4ea
[wpt PR 45920] - [aspect-ratio] Fix webm file that caused test flakiness, a=testonly

Comment 4

[Aron Cseh]

https://hg.mozilla.org/mozilla-central/rev/17e29404d4ea