h264ify
What is h264ify?
Add-on stats
- storage
Ranking
Add-on summary
Try h264ify if YouTube videos stutter, take up too much CPU, eat battery life, or make your laptop hot.
By default, YouTube streams VP8/VP9 encoded video. However, this can cause problems with less powerful machines because VP8/VP9 is not typically hardware accelerated.
In contrast, H.264 is commonly hardware accelerated by GPUs, which usually means smoother video playback and reduced CPU usage. h264ify makes YouTube stream H.264 videos instead of VP8/VP9 videos.
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spammy, or outdated.- Improves CPU usage while watching videos
- Fixes video lag and choppiness on YouTube
- Helps older laptops without VP9 hardware support
- Keeps laptops cooler during video playback
- Allows for smooth video streaming up to 1080p
- Blocks playback options above 1080p
- Issues with AV1 playback using more resources
- Not working in multiple instances for some users
- Reported lag even after installation
- Improvement in video playback and CPU efficiency
- Problems with AV1 and 1080p limits
- Lag issues despite using the add-on
Recent reviews
Add-on safety
Risk impact
h264ify is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install h264ify if you trust the publisher.
Risk likelihood
h264ify has earned a good reputation and can be trusted.