I posted this as a reply buried down in this thread, but it's really useful
and I want everybody to know about it.
At Mozilla's add-on site, to which I don't think I can link because they
promote proprietary software, they have an add-on called "YouTube ALL HTML5".
It is developed by Klemens Schölhorn. It allows you to see all videos on
YouTube in HTML5 without using Gnash. For most videos it does this
automatically, but for VEVO videos you have to click the button it adds next
to the YouTube search bar.
The add-on's page says its source code is released under GPLv3 or later, but
the source files bear the MPL license header. In any case, it's free
software.
- [Trisquel-users] Firefox/Abrowser add-on lets you see all Y... darrenvenables
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