Porteus

For Firefox:
1. Go to https://youtube.com/html5
- If you have all the boxes in blue, you have the functions active, you don' t need to do anything, else follow the steps below.

2. Open about:config in Firefox
3. Change the value from false to true for:
- media.mediasource.enabled
- media.mediasource.webm.enabled
4. Create media.mediasource.ignore_codecs value: Right-click -> New -> New Boolean value -> media.mediasource.ignore_codecs -> save the value and select true.
5. Change the value from false to true for:
- media.fragmented-mp4.exposed
- media.fragmented-mp4.ffmpeg.enabled
- media.fragmented-mp4.gmp.enabled

Source: https://www.youtube.com/watch?v=XtR9YIDFhYI

For Opera (chromium based):
Download chromium-codecs-ffmpeg-extra: http://pkgs.org/search/?query=chromium- ... mpeg-extra
Replace libffmpeg.so.33 (33 is an example, find this file in opera/lib dir) with libffmpeg.so from downloaded package and rename it like removed one (here: libffmpeg.so.33)
Sometimes it may not work - "renderer crashes when trying to play .H264 video. We are working to fix it as soon as possible."

First time I get Firefox with *all* html5 video formats ON on the youtube test. ANd that happens on Porteus live on an old Atom/gma500 box. Wooow tome

EDIT: Allowing Fx to play h264 videos made it play youtube vids pretty well on the dreadfull gma500 "Intel" Graphics As CPU usage is then slow, compared to playing any 720p format on the desktop (*no* XV CPU @ ~100%) I believe it now plays web videos with the otherwise unavailable hardware acceleration of that fu*kin son of a su*ker b*tch PowerVR SGX based chip.

In my recent palemoon (Firefox clone) none of the mentioned settings existed,so I created them all (as bolean) and reloaded the youtube page [ https://www.youtube.com/html5 ] , but sadly, it not worked. Only 2 of the 6 boxes are blue.

Seems I have to ask on the palemoon forum for more info...