Youtube 60fps Video Dropped Frames

User Help for Mozilla Firefox
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Mugen02
Posts: 9
Joined: December 28th, 2018, 10:06 am

Youtube 60fps Video Dropped Frames

Post by Mugen02 »

I've noticed that various 60fps 720p/1080p/2160p videos on YouTube would show dropped frames in the stats for nerds window.

Things to note:
- Firefox is up to date.
- Hardware acceleration on/off didn't fix this.
- No add ons/ safe mode didn't fix this.
- I have a NVIDIA GTX 980 TI with the latest drivers.
- I have a Intel i7 965 that is overclocked to 3.9ghz.
Mugen02
Posts: 9
Joined: December 28th, 2018, 10:06 am

Re: Youtube 60fps Video Dropped Frames

Post by Mugen02 »

Application Basics
------------------

Name: Firefox
Version: 65.0.1
Build ID: 20190211233335
Update Channel: release
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:65.0) Gecko/20100101 Firefox/65.0
OS: Windows_NT 10.0
Multiprocess Windows: 1/1 (Enabled by default)
Web Content Processes: 5/8
Enterprise Policies: Inactive
Google Key: Found
Mozilla Location Service Key: Found
Safe Mode: false

Crash Reports for the Last 3 Days
---------------------------------

All Crash Reports Firefox Features
--------------------------------------

Name: Firefox Monitor
Version: 2.8
ID: fxmonitor@mozilla.org

Name: Firefox Screenshots
Version: 35.0.0
ID: screenshots@mozilla.org

Name: Form Autofill
Version: 1.0
ID: formautofill@mozilla.org

Name: Web Compat
Version: 3.0.0
ID: webcompat@mozilla.org

Name: WebCompat Reporter
Version: 1.1.0
ID: webcompat-reporter@mozilla.org

Extensions
----------

Name: Default Bookmark Folder
Version: 2.7.0
Enabled: true
ID: default-bookmark-folder@gustiaux.com

Name: Enhancer for YouTube™
Version: 2.0.84
Enabled: true
ID: enhancerforyoutube@maximerf.addons.mozilla.org

Name: Google Translator for Firefox
Version: 3.0.3.3
Enabled: true
ID: translator@zoli.bod

Name: New Tab Override
Version: 14.2.0
Enabled: true
ID: newtaboverride@agenedia.com

Name: Print Edit WE
Version: 23.9
Enabled: true
ID: printedit-we@DW-dev

Name: Route with Google Maps
Version: 1.2
Enabled: true
ID: route-with-google-maps-addon@daniel-wiedner.de

Name: uBlock Origin
Version: 1.18.4
Enabled: true
ID: uBlock0@raymondhill.net

Name: Undo Close Tab
Version: 4.4.3
Enabled: true
ID: {4853d046-c5a3-436b-bc36-220fd935ee1d}

Name: Zoom Page WE
Version: 13.3
Enabled: true
ID: zoompage-we@DW-dev

Security Software
-----------------

Type: Windows Defender Antivirus

Type: Windows Defender Antivirus

Type: Windows Firewall

Graphics
--------

Features
Compositing: Basic
Asynchronous Pan/Zoom: wheel input enabled; scrollbar drag enabled; keyboard enabled; autoscroll enabled
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Driver Date: 1-11-2019
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NSSSSL
Expected minimum version: 3.41
Version in use: 3.41

NSSUTIL
Expected minimum version: 3.41
Version in use: 3.41

Sandbox
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Content Process Sandbox Level: 5
Effective Content Process Sandbox Level: 5

Internationalization & Localization
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Application Settings
Requested Locales: ["en-US"]
Available Locales: ["en-US"]
App Locales: ["en-US"]
Regional Preferences: ["en-US"]
Default Locale: "en-US"
Operating System
System Locales: ["en-US"]
Regional Preferences: ["en-US"]
kerft
Posts: 585
Joined: January 30th, 2019, 9:38 am

Re: Youtube 60fps Video Dropped Frames

Post by kerft »

As a test, disable enhancer for youtube.
60fps video is challenging for a browser. And it is easy for Google to in a deniable way tweak it so it only works in Chrome without it being obvious they did so. You could try Firefox beta or nightly with webrender forced on, but it will probably make it worse.
If you are using a laptop, laptops running off of battery or with power saving modes turned on may not work at peak frequency or performance. Plugging in your laptop and setting the power saving to "maximum performance" or "no power saving" might help. Some power saving exists even on desktops so you could try the same thing.
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