1206758 - Multiple HTML5 video renders significantly slower than in Chromium

Status: NEW

(Core :: Graphics: Canvas2D, defect, P3)

Description

[senya]

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/44.0.2403.89 Chrome/44.0.2403.89 Safari/537.36

Steps to reproduce:

Opened the https://output.jsbin.com/makugi page in Chromium and Firefox. Test environment is Intel Core i5-3337U laptop, SSD, fast internet connection (> 10 Mbit/s), Ubuntu 14.04, Firefox and Chromium are installed from the standard Ubuntu repositories.


Actual results:

Chromium rendered it in 3 seconds. Firefox rendered it in 22 seconds.


Expected results:

Firefox should have rendered it faster.

Comment 1

[senya]

https://output.jsbin.com/wopiluwefe

This is the same test, but without a controls attribute defined in video tag. It works fine.

The issue reproduces in Firefox 41.

Comment 2

[Michelle Funches - QA]

Fixed > Mozilla/5.0 (Windows NT 10.0; WOW64; rv:42.0) Gecko/20100101 Firefox/42.0
@Reporter: Can you confirm in current version of Firefox 42.0

Comment 3

[senya]

Yes, the same thing in 42 build from Ubuntu repositories.

Comment 4

[u279076]

Can you please provide a minimum testcase and attach it to this bug report? The link you provided does not work for me at all in Firefox nor Chrome. I get the HTML on the left but nothing ever renders on the right.

Comment 5

[senya]

Attachment: jsbin.rucoxadiqi.1.html

A testcase

Comment 6

[u554753]

Test case provided in Comment 5. Removing keyword.

Comment 7

[u279076]

Thanks for the testcase, I can reproduce this now. However I don't see what this has to do with Canvas since there are no canvas elements in the testcase.