1550399 - YouTube videos framerate drops when switching to fullscreen

Status: RESOLVED INCOMPLETE

(Firefox :: Untriaged, defect)

Description

[Jonathan Guerin]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:67.0) Gecko/20100101 Firefox/67.0

Steps to reproduce:

View a video on YouTube:
https://youtu.be/7CtFhkcocSg

Switch it to full screen

Actual results:

Before fullscreen, video is smooth. Once it goes fullscreen, it seems to drop frames.

Expected results:

Video should stay smooth.

Comment 1

[Jonathan Guerin]

Just tried the same video in Edge Developer Preview, Chrome and Edge - none of them exhibit any frame loss in fullscreen.

Comment 2

[ovidiu boca[:Ovidiu]]

Hi, I've tested on FF Beta 67.0b19 and FF Nightly 68.0a1(2019-05-12) on Windows 10 and Mac OS X 10.14 and I can't reproduce the issue.

Please download Firefox Nightly from here: https://nightly.mozilla.org/ and retest the problem.

Please test if the issue is reproducible in safe mode, here is a link that can help you:
https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode

Comment 3

[Rares Doghi, Desktop QA]

Hi, due to the lack of information from the reporter, I will close this issue as incomplete, but please reopen this issue if you have more info that might help us reproduce this issue. Thank you

Comment 4

[Jonathan Guerin]

Forgot to reply, sorry! I haven't seen this repro :)