enhanced-h264ify

Name: enhanced-h264ify
Rating: 4.4561 (114 reviews)
Author: Alex

By: Alex

Choose what video codec YouTube should play for you

Download

Install

Features & Capabilities

enhanced-h264ify is a powerful Chrome extension that lets you control YouTube's video codec playback. Unlike the standard h264ify, this enhanced fork provides advanced features allowing you to manually block video codecs such as H264, VP8, VP9, AV1, and manage 60fps video playback.

Designed especially for devices with hardware decoding support for H264 but limited or no support for VP8/VP9, this extension ensures smooth video streaming on YouTube by restricting playback to your preferred codecs. By default, it blocks all codecs except H264 and 60fps video formats. This makes it an ideal tool for optimizing video performance and reducing resource consumption on compatible devices. The extension works exclusively on YouTube and is open source on GitHub.

User Growth & Download Statistics

Add-on

By:

Alex

Daily users:

13,984 193

Rating:

4.46

(114)

Version:

2.2.1 Last updated: 2024-05-30

Version code:

5751403

Creation date:

2019-04-07

Risk:

Permissions:

storage

Content scripts matches:

*.youtube.com
*.youtube-nocookie.com
*.youtu.be

Size:

24.97KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-24

Compare stats and ranking:

Ranking

# 618 ▲ 12

Other rankings

#96 in Photos, Music & Videos ▲ 2#5 in enhance keyword 49 #26 in choose keyword 27 #119 in marketing keyword 15 ▲ 2#236 in device keyword 20 ▼ 2

Other platforms

enhanced-h264ify (v2.2.1)

100,000 4.78

(211)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Alex

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/enhanced-h264ify/

User Reviews

Pros: reduces CPU usage and heat when blocking AV1/VP8/VP9, enabling hardware-decoding (H.264/AVC1) on older machines; confirms codec blocking works; can lower RAM usage; simple to use. Cons: causes video playback failures (black screens, not loading) on many videos when codecs blocked; can break YouTube and livestreams; occasional stoppage after site changes; inconsistent across videos. Summary: widely helpful for aging hardware seeking lower CPU load and HW-accelerated playback, but reliability varies with sites and videos; users should be aware of potential breakages.

Pros

Significant CPU usage/temperature reductions when blocking AV1/VP8/VP9
Improves performance on older hardware by enabling hardware-decoding (H.264/AVC1) and reducing CPU load
Blocks AV1/VP9/VP8 (and Opus audio) as intended to force fallback to compatible codecs
Reduces RAM usage on some systems
Easy to use for background playback without fiddling with settings

Cons

Playback failures or black screens when blocking certain codecs (AV1/VP9/VP8) on many videos
YouTube compatibility issues / site instability; videos may not load on YouTube
Livestreams may break or become unusable
Occasional stoppage or slowdown after changes to YouTube/website implementations
Inconsistent effectiveness on some videos (some codecs remain in use)

Recent reviews

by Pr*****, 2026-06-07

by Ar*****, 2026-06-04

by Fi*****, 2026-05-13

View all user reviews ›

Is enhanced-h264ify Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

enhanced-h264ify requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Request access to the following domains: youtube.com, youtube-nocookie.com, youtu.be
High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

enhanced-h264ify has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

Medium This extension has medium user count. Unpopular extensions may not be stable or safe.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Good **** ********* *** **** **** *******