h264ify
Makes YouTube stream H.264 videos instead of VP8/VP9 videos
h264ify - Stream YouTube Videos Smoothly
"h264ify" is a Firefox add-on that enhances YouTube video streaming by forcing playback of H.264 encoded videos instead of the default VP8/VP9. This is particularly beneficial for users with less powerful machines, as H.264 is typically hardware accelerated, leading to smoother playback, lower CPU usage, and extended battery life. However, note that H.264 is not available for 4K and 1440p videos due to YouTube's encoding practices.
Add-on stats
Manifest V2
By: erkserkserks
Rating: 4.42 
(216)
Weekly download count: 722
Firefox on Android: Yes
Permissions:
- storage
Size: 35.79K
URLs: Website
Full description: See detailed description
Ranking
# 321
User reviews
These summaries are automatically generated weekly using AI based on recent user reviews.
Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate,
spammy, or outdated. Pros
- Greatly reduces CPU usage while watching videos
- Improves the playback of YouTube videos on lower-end laptops
- Makes videos smoother and prevents freezing
- Helps keep laptops cooler during video playback
Cons
- Issues with videos playing above 1080p when the extension is enabled
- Not functioning as intended for some users
- Conflicts with certain video codecs like AV1
Most mentioned
- Significant performance improvement for YouTube video playback
- Problems with 4K video options being blocked
- Effectiveness varies based on user hardware and situations
User reviews
by 退出党团队远离中共恶魔, 2025-02-11
Youtube videosu izlerken ram veya cpu sorununuz varsa kullanın oldukça azaltıyor.
by Firefox user 18791942, 2025-01-26
by Craig, 2025-01-23
Add-on safety
Risk impact
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
We don't have sufficient data to confidently determine the risk likelihood of h264ify. Use it at your own risk.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
- Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
- Good **** ********* *** **** **** *******
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