New issue
Advanced search Search tips

Issue 603842 link

Starred by 1 user

Issue metadata

Status: Fixed
Owner:
Closed: Nov 2016
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Windows , Mac
Pri: 2
Type: Bug



Sign in to add a comment

Regression : Flickering of video frame is observed when mouse pointer is hovered over playlist icon in www.coindesk.com.

Reported by mni...@etouch.net, Apr 15 2016

Issue description

Chrome version : 51.0.2704.7 a8bebc2b0cd3e3018b7c9f6ac698f04dd226abba-refs/branch-heads/2704@{#48} (32/64-bit)
Os : All (Windows 7 aero enabled)
Url : http://www.coindesk.com/information/what-is-bitcoin/

Steps : 
1. Launch Chrome and navigate to above url.
2. Now scroll down the page to see 'What is a Bitcoin' video.
3. Now try to hover the mouse cursor over 'playlist' icon(Move the mouse cursor over playlist icon area) in video frame and observe 

Actual : Flickering of video frame is observed when mouse pointer is hovered over playlist icon.
Expected : Flickering of video frame should not be seen when mouse pointer is hovered over playlist icon.

This is a regression issue broken in 'M-50' and below is the manual regression and Narrow bisect info:
Good build : 50.0.2625.0
Bad build : 50.0.2627.0

Narrow bisect info:
https://chromium.googlesource.com/chromium/src/+log/5dc7e9437e00c35c6fa2d30f365824b8f96b778b..e116bda6e6e1756c4e3ed8c9e2a3056c452a2aa6?pretty=fuller&n=50

Suspecting : r370188 from Narrow bisect.

@vmpstr : Could you please help to reassign if your change is not the cause for this change.


 
Actual_video.mp4
1.2 MB Download
Expected_video.mp4
638 KB Download

Comment 1 by mni...@etouch.net, Apr 15 2016

Components: -Internals>Compositing Blink>Layout

Comment 2 by vmp...@chromium.org, Apr 18 2016

Cc: cblume@chromium.org ericrk@chromium.org enne@chromium.org
Components: -Blink>Layout Internals>Compositing>Rasterization
Labels: Hotlist-ImageWG
This reproduces with just

<iframe width="560" height="315" src="https://www.youtube.com/embed/Gc2en3nHxA4?list=PLZWrc_gWChqnaaeOQcxXG3qBF-yfS1Ayv" frameborder="0" allowfullscreen></iframe>

in an html file. It seems that hovering of the icon causes a layer to be created temporarily, which causes some small offset differences in the image. 

Comment 3 by vmp...@chromium.org, Apr 26 2016

Labels: -Type-Bug-Regression Type-Bug
Note that this reproduces on m49 with 

<div style="height:4px"></div>
<iframe width="560" height="315" src="https://www.youtube.com/embed/Gc2en3nHxA4?list=PLZWrc_gWChqnaaeOQcxXG3qBF-yfS1Ayv" frameborder="0" allowfullscreen></iframe>

I don't think this is a regression, but we should still figure out what's going on. 
vmpstr, is the suspected cl the culprit, do you think?

Comment 5 by piman@chromium.org, May 17 2016

Labels: -Pri-1 Pri-2

Comment 6 by vmp...@chromium.org, May 17 2016

@4 I think the problem has been happening for a while, but something did change with image decode controller to make it appear in a different set of cases. 
Status: Fixed (was: Assigned)
I think this is fixed (at least, I can't repro anymore). If it's still a problem, please reopen.

Sign in to add a comment