Unable to reproduce this issue on Mac OS 10.12.5 using chrome latest stable #59.0.3071.115. By playing the youtube video observed no flashes around the screen.

Reporter@ Could you please confirm are you able to reproduce this issue consistently across all video sites or specific to any webpage? If yes, please provide the URL of the webpage. Are you able to reproduce this issue on incognito mode as well? Please recheck this issue by creating a new profile under chrome://settings with no apps or extensions in your browser.

Thanks!

 Issue 741262  has been merged into this issue.

Its happens on https://www.panda.tv/. not consistently happens. Just happens sometime. 

We made the video by fetching flv stream to get h264 data and produce mp4 file by javascript. then playback video by attech mediasource. Its some way different to youtube. especially h264 not vp9. 

What is more. I also heard about bilibili users have same problem when they use h5player (similar tech). http://www.bilibili.com/ 

The "other part of page" seems to be random. 

The problem happens not frequent.  

Anthor video that I asked from my user is atteched. But have I no idea about his chrome version. 

Thanks.

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Thank you for providing more feedback. Adding requester "brajkumar@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

Could you provide more information on the hardware/OS configuration of the machines where this problem was observed?  If you could attach the contents of the chrome://gpu page from a machine where this was observed, that would be very helpful.  Do you know if it is only MacOSX 10.12 users who are experiencing this?

Thank you

Not sure if all of them are mac. End users who I can contect are all mac users. 

Here is the chrome://gpu page 

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Thank you for providing more feedback. Adding requester "junov@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

Instead of a screen shot, could you copy and paste the contents of that page to a text file so that we can see all of it?  That screenshot is missing critical information that appear later in the page (GPU model, driver version, etc.)

Since this might be a mac-only issue, I wonder if this might be a manifestation of  issue 710443 .

Tentatively assigning to bsalomon.

I don't think this can be a dupe of  Issue 710443  since it reproduces on 10.12.6 and the Intel clear bug was fixed in 10.12.5

Still need feedback according to comment #8.

The txt version is attached. 

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The NextAction date has arrived: 2017-07-27

I have observed this many times on multiple sites, including Youtube, Instagram and my own development sites. It's difficult to reproduce consistently and can always be solved by switching tabs 2-3 times and going back to the original page.