Fork of enhanced-h264ify for Thorium.
Thorium H264ify is a fork of enhanced-h264ify, which is itself a fork of the well-known h264ify extension for Firefox/Chromium, which blocks VP8/VP9 codecs on YouTube, so that you can use H.264 only. This may be useful because there are lots of devices on the market which support H.264 hardware decoding and do not support VP8/VP9.
This extension has new features such as manual blocking of H.264, VP8, VP9, AV1 codecs and 60fps video. By default it blocks everything but H.264 and 60fps video.
It works only on YouTube.
Install for Chromium/Thorium/Chrome > Chrome Webstore Link
Install for Firefox > Firefox Add-Ons Store Link
Download the latest thorium-h264ify.zip from the Releases, unpack it, and drag-n-drop the thorium-h264ify.crx into chrome://extensions after enabling developer mode in the upper right hand corner of the page.