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Issue 875065 link

Starred by 2 users
Status: Assigned
Owner:
sande...@chromium.org
Cc:
human.p...@gmail.com
Components:
EstimatedDays: ----
NextAction: ----
OS: Windows
Pri: 3
Type: Bug

Blocking:
issue 874499



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Crop varies when surface layers are toggled on Windows

Project Member Reported by sande...@chromium.org, Aug 16 
In issue 874499, the crop (visible rect) of the surface layer vs. no surface layer cases differs.

This affects YouTube content on Windows 10 w/ Intel Graphics 620.

human.p...@: Can you capture a log from chrome://media-internals while the video is playing? Thanks!

Comment 1 by sande...@chromium.org, Aug 16

Summary: Crop varies when surface layers are toggled on Windows (was: Crop varies when surface layers are toggles on Windows)

Comment 2 by sande...@chromium.org, Aug 16

Blocking: 874499

Comment 3 Deleted

Comment 4 by human.p...@gmail.com, Aug 16 

I mean canary*

Comment 5 by human.p...@gmail.com, Aug 16 

Not sure how helpful it would be under such situation, I still recorded some log under:

70.0.3524.0 (Official Build) canary (64-bit) (cohort: Clang-64)
chrome://flags/#enable-surfaces-for-videos = disabled
Playing https://www.youtube.com/watch?v=eK6ufTDLt_Y 1080p
media-internals.txt
10.3 KB View Download

Comment 6 by human.p...@gmail.com, Aug 16 

Some clarification:

After reviewing my previous screenshots, I realize that UI overflowing issue was always there with Canary. So, that's irrelevant. 

However, I suddenly cannot reproduce the cropping difference now any more: the cropping is constantly wrong, regardless the status of #overlay-strategies or #enable-surfaces-for-videos, or both.

I suspect it's because I touched some of the Intel Display settings, but undo them doesn't help.

Comment 7 by sande...@chromium.org, Aug 16 

Based on the log, the visible rect is correct, but it may be the case that the coded size is wrong (it's 1920x1080, which is not a multiple of 16x16 macroblocks). It is using H.264 (DXVA VDA) via MojoVideoDecoder; I will attempt to reproduce myself.

Sounds like it would be worth trying to upgrade or downgrade your GPU driver, if those settings are affecting the result in unreliable ways.

Comment 8 by human.p...@gmail.com, Aug 16 

By "wrong", you should notice that even the overlay is overflowing: the progress bar shouldn't touch the right boundary. 

But I seem be able to reproduce this in other browsers as well.
Untitled-1.png
153 KB View Download

Comment 9 by human.p...@gmail.com, Aug 16 

Also worth noting, when loading the page, there is a split of second that the overlay and video size was correctly showing, but then it became incorrect one.
2018-08-16 18-02-24.mp4
13.5 MB View Download
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