New Firefox Quantum 57.0.2: Some Youtube Videos Have Green Lines?

I would say if it's doing it all the time there may be an issue with Firefox itself. The things I would try would be clear all cache/cookies/site preferences, etc under settings. If that doesn't work maybe even try an complete uninstall, and reinstall. If you don't want to do that you can try the portable version of Firefox. You can just install it to your desktop. It won't conflict with your fully installed version. You just can't have both open at the same time. Test the portable one right after install to see what that shows, and see if videos play correctly. If they do then I would say a complete uninstall of Firefox is needed.

Mozilla Firefox, Portable Edition | PortableApps.com - Portable software for USB, portable and cloud drives

Bobby Phoenix said:

All the time, or just during videos? I only have this thread open in one tab, and my GPU is zero.

Attachment 167682

The GPU seems to be in use in Firefox mostly when flash video is playing in Firefox, but it's sometimes in use when videos aren't being played.

When videos aren't being played the GPU is used for only around 1%.

Update:
For the past 2 weeks I've been running Firefox with "Use hardware acceleration when available" turned off and I haven't had the green lines appear on videos.

However, my CPU now seems to be getting stressed more as CPU usage in Windows Task Manager is much higher...

So my CPU is being used much more now because I've disabled "hardware acceleration" in Firefox?

Thanks!

Try about:config in address bar then search for browser.cache via the search box

Note down current settings before changing anything

Change browser.cache.disk.enable to false
Change browser.cache.memory.enable to true

Create new preference browser.cache.memory.capacity and set it to -1

Close Firefox then relaunch it.

Also get a copy of speedyfox and run it once per week at least. (firefox must be closed before running speedyfox)

SpeedyFox - Boost Firefox, Skype, Chrome, Thunderbird in a Single Click!

Callender said:

Try about:config in address bar then search for browser.cache via the search box

Note down current settings before changing anything

Change browser.cache.disk.enable to false
Change browser.cache.memory.enable to true

Create new preference browser.cache.memory.capacity and set it to -1

Close Firefox then relaunch it.

Your reply is appreciated!

After disabling "hardware acceleration" in Firefox, it seems like the problem of the green lines appearing in videos has been solved.

Did you see that post?

Josey Wales said:

Well turn it on if you can deal with the crashes. Right now Firefox 57.0.3 is using 0.05% of my CPU. Not that high eh:)

Since disabling "hardware acceleration" Firefox seems to put a lot of strain on my CPU while it's playing 1080P video on Youtube. My CPU is a quad core Q9400.

NiceAndShy said:

Your reply is appreciated!

After disabling "hardware acceleration" in Firefox, it seems like the problem of the green lines appearing in videos has been solved.

Did you see that post?

I did see it. I should have made it clear that my reply was in response to:

NiceAndShy said:

So my CPU is being used much more now because I've disabled "hardware acceleration" in Firefox?