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Issue 776777 link

Starred by 1 user
Status: WontFix
Owner:
ccameron@chromium.org
Closed: Oct 2017
Cc:
ccameron@chromium.org
jmukthavaram@chromium.org
EstimatedDays: ----
NextAction: ----
OS: Windows
Pri: 2
Type: Bug-Regression



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Chrome 62 does not have compatible color profiles with videos that use the Rec.601 color space.

Reported by maidve...@gmail.com, Oct 20 2017 
UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.79 Safari/537.36

Steps to reproduce the problem:
1. Update Chrome 61 to Chrome 62
2. Relaunch browser
3. No compatible color profiles in chrome://flags/#force-color-profile

What is the expected behavior?
Colors on Standard Definition videos that use Rec.601 content (such as those captured from a Wii, Gamecube, or PlayStation 2) should have darker reds, and lighter greens. This is proven for Wiis and Gamecubes by comparing to screenshots from Dolphin Emulator.

Attached are 2 images that display the proper colors on video content captured from a Wii, with a Dolphin Emulator screenshot included.

As of now, the only way for these videos to display properly is for me to use Chrome 61.0.3163.79 with color-correct rendering turned off, instead of Chrome 62.0.3202.

What went wrong?
Due to the color profiles available only being compatible with the Rec.709 color space, there is a mix of color spaces (browser Rec.709 combined with the video's Rec.601) which results in inaccurate colors. Reds are blown out too much and greens are too dark.

Attached is an image of the improper colors on the captured video content from a Wii.

Did this work before? Yes 61.0.3163.79

Chrome version: 62.0.3202  Channel: stable
OS Version: 10.0
Flash Version: 27.0.0.170

Adding color profiles that are compatible with the Rec.601 color space would solve the problem. One color profile that supports Rec.601 is called SMPTE-C.

Another solution would be allowing a user the option to disable color management in the browser.
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Comment 1 by jmukthavaram@chromium.org, Oct 25 2017

Cc: ccameron@chromium.org
Labels: Needs-Triage-M62 Needs-Feedback
maidvelia@,

Thanks for the report..!
Could you please provide us sample color profile to triage this issue from TE end.

Comment 2 by maidve...@gmail.com, Oct 25 2017 

@ccameron,

If you mean the color profile I was talking about in my report, this would be it.
SMPTE-C.icc
552 bytes Download
Project Member

Comment 3 by sheriffbot@chromium.org, Oct 25 2017

Cc: jmukthavaram@chromium.org
Labels: -Needs-Feedback
Thank you for providing more feedback. Adding requester "jmukthavaram@chromium.org" to the cc list and removing "Needs-Feedback" label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Comment 4 by ccameron@chromium.org, Oct 25 2017

Status: WontFix (was: Unconfirmed)
Chrome will read your installed color profile by default. If you want a particular profile (like SMPTE-C.icc), set it as your profile in your monitor, and Chrome will pick it up.

The options in about:flags are fore debugging and as an escape hatch for users who really really want us to ignore their operating system settings.

Comment 5 by ccameron@chromium.org, Oct 25 2017

Owner: ccameron@chromium.org
►

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