1185410 - HTML5 video failing to paint frequently when changing time manually

Status: RESOLVED WORKSFORME

(Core :: Audio/Video: Playback, defect)

Description

[u529383]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.134 Safari/537.36

Steps to reproduce:

Open any YouTube video, for example: https://www.youtube.com/watch?v=QRfj1VCg16Y

Pause the video

Open the developer console and enter the following multiple times:

document.querySelector('video').currentTime = document.querySelector('video').currentTime + 1

Or using your mouse select a different time in the progress bar, but don't move the mouse after you click


Actual results:

Most of the times the video will turn black instead of showing the frame at that point in time.

Moving the page or the mouse around makes the frame appear (paint?), suggesting that this issue is linked to paint failure


Expected results:

Every single frame should display.

This issue is not present in the current stable version 39.0

Comment 1

[Benjamin Chen [:bechen]]

Hi John:
Is the same with bug 1159343?

Comment 2

[u529383]

(In reply to Benjamin Chen [:bechen] from comment #1)
> Hi John:
> Is the same with bug 1159343?

Different issue; the one you linked is related to preview lag while seeking (and on mobile), the one I posted is related to previews not showing at all (display black) which appear correctly once you move the page or the mouse over some elements (and this one is on desktop - Windows).

Comment 3

[Ralph Giles (:rillian)]

Can you reproduce with a html5 <video> example, to make sure you're not fighting youtube's player code?

Comment 4

[u529383]

(In reply to Ralph Giles (:rillian) from comment #3)
> Can you reproduce with a html5 <video> example, to make sure you're not
> fighting youtube's player code?

I can no longer reproduce it in the most recent Nightly 44.0a1 (2015-10-19), including in YouTube.

I think it is safe to say that this issue has been fixed. I will mark it as Resolved (worksforme), please do correct this action if it was not mine to make or an incorrect one.