PiP window shows frozen frame if video opened from background page on some platforms
Reported by
m...@screencastify.com,
Dec 7
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Issue descriptionUserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.80 Safari/537.36 Platform: 11151.51.0 (Official Build) beta-channel kevin Steps to reproduce the problem: On ChromeOS, Windows 10, (did not test Linux): 1. Load extension from attached file or https://github.com/Schibum/chrome-bug-pip-background 2. click extension icon What is the expected behavior? Picture in Picture plays back video consistently across all platforms. Works fine on MacOS, tested on 71.0.3578.80 (Official Build) (64-bit) and 73.0.3633.0 What went wrong? PiP video does not play, but stays frozen at a single frame. By hitting play/pause, the video skips to another single frame. Did this work before? N/A Does this work in other browsers? N/A Chrome version: 71.0.3578.80 Channel: beta OS Version: 11151.51.0 Flash Version: Sounds similar to the issue that was fixed here: https://crbug.com/893062
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Dec 7
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Dec 7
Sounds like a video surface layer issue.
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Dec 12
+fbeaufort@ who looked into PIP for background pages. My memory is that it is expected to not work, right?
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Dec 12
IIRC Picture-in-Picture was working for me when I've added support for it at https://chromium-review.googlesource.com/c/chromium/src/+/1145261/ I'm able to reproduce this issue with the extension provided by screencastify and with mine at https://chromium.googlesource.com/chromium/src/+/master/chrome/test/data/extensions/api_test/trigger_actions/browser_action_picture_in_picture Note that it works fine for Chrome Apps pages.
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Dec 13
Increasing priority as it seems to be a regression according to fbeaufort@. I wonder if that may be a similar root cause as the issue with re-attached tabs.
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Dec 14
I've downloaded a older build of Chromium 70.0.3538.67 where extensions support was added and it looks like the issue was there already. Sorry for my misremembering. Video in Picture-in-Picture window plays smoothly when video comes from a Chrome Apps page or a Chrome Extension page (popup, options, etc). It only shows one frame when video is created from a background page (extension or chrome app). And I have no clue why.
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Dec 14
My guess would be that background pages don't have any UI layer associated (as you can see in devtools when inspecting background pages) and that may explain why.
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Dec 14
Note that I've tried it in Chrome OS and Linux only. I didn't try in macOS.
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Dec 14
For info, opening a tab that points to a background page such as "chrome-extension://hkgfoiooedgoejojocmhlaklaeopbecg/_generated_background_page.html" works. Video plays smoothly there.
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Jan 3
Any progress on this?
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Jan 3
No, not yet.
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Jan 3
Investigating the reattaching tab issue to see if it will fix this one as well.
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Jan 9
Does not seem like https://chromium-review.googlesource.com/c/chromium/src/+/1400943 fixed it. Looking into it more.
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Jan 9
+samans@ It looks like despite setting compositor_frame_sink_->SetNeedsBeginFrame(true), we aren't getting any BeginFrames. Do you know what would prevent a BeginFrame from being sent back in this situation?
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Jan 10
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Comment 1 by m...@screencastify.com
, Dec 7293 KB
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