Arch Linux

severach

Member

Registered: 2015-05-23

Posts: 198

Make Firefox on Youtube prefer webm over mp4

Ever since the Firefox 43 upgrade I've had problems with getting Youtube to use webm instead of mp4. Everyone else wants H.264 and I want webm.

The big upgrade for Firefox 43 was to enable full HTML5 support and check all the boxes blue. The sudden appearance of H.264 disables webm.

To get webm, H.264 must show red in Youtube Html 5 check.

Firefox all versions: pacman -R gst-libav (this disables H.264)
Firefox >=43: about:config, media.fragmented-mp4.ffmpeg.enabled=false (this disables MSE & H.264 and H.264)

Webm in Firefox 43. What a relief.

Are there any better ways?