Re: [gentoo-user] Package conflict while trying to emerge chromium

[Gevisz]

On Sat, 14 Feb 2015 11:36:48 +0100 Marc Joliet <marcec@×××.de> wrote:

> Am Fri, 13 Feb 2015 18:11:31 -0500
> schrieb "Walter Dnes" <waltdnes@××××××××.org>:
>
> > On Fri, Feb 13, 2015 at 08:02:08PM +0200, Gevisz wrote
> > >
> > > 2. I am not sure but my guess is that the gstreamer allows me to watch
> > >    the video from youtube (partially), edX, cousera, etc. in a web-browser
> > >    (I mainly use Firefox), as I never install any flash player to avoid
> > >    too many "flashing" while browsing the Internet. (Would be interested
> > >    to know if this my guess is correct.)
>
> Yes, you are correct, at least for Firefox (but I would be surprised if it were
> different for qtwebkit). Note that the dependencies aren't specified in the
> ebuild itself, but in the mozconfig-* eclasses.  See for example the
> mozconfig-v5.34 eclass:
>
> 	gstreamer? (
> 		>=media-libs/gstreamer-1.2.3:1.0
> 		>=media-libs/gst-plugins-base-1.2.3:1.0
> 		>=media-libs/gst-plugins-good-1.2.3:1.0
> 		>=media-plugins/gst-plugins-libav-1.1.0_pre20130128-r1:1.0
> 	)
>
> The libav gstreamer plug-in is what lets you watch MP4 videos (and don't
> let the name fool you, it also works with ffmpeg).

Thank you for information.

> And if you install
> gst-plugins-mad:1.0, then you can also play MP3s in Firefox (see
> https://bugs.gentoo.org/show_bug.cgi?id=536530).
>
> >   I use the Seamonkey variant of Firefox.  It has a more "classic" GUI
> > interface, and a few other differences.  It also has an option in the
> > settings...
> >
> > Edit ==> Preferences ==> Advanced ==> Scripts & Plugins
> >
> >   You can choose whether or not to "Activate all plugins by default".
> > ***THIS IS NOT AN ADDON*** like Flashblock, so you don't have to worry
> > about the author keeping up with the current version of the browser.  It
> > is a built-in setting.  If you turn that option off, you get a box that
> > says "Activate Adobe Flash" on any page with Flash on it.  You can click
> > on the box, and that activates only the one instance.  If there are
> > several flash boxes on a page, you can click on just the one(s) you
> > want.
>
> A variant of this setting also exists in Firefox, albeit it is accessed from the
> about:addons page under Plugins.  There you get a per-plugin tri-state setting,
> where you can choose between "always on", "always off", or "always ask".  With
> the latter, you get the same behaviour you described: a placeholder that you can
> click to selectively activate Flash.
>
> Personally, I don't like that way of doing things, because unless you
> completely deactivate Flash, Youtube will stupidly never attempt to use HTML5
> videos (I guess it sees that you have Flash installed?).

Yes, it is bad because now I can see at least half of the youtube videos via html5.

> Thus, I use the FlashDisable extension, which simply makes it easier to toggle
> between "always on" and "always off" (although it won't allow you to selectively
> activate Flash per instance on a page, which is too bad, although I rarely see this).

Thank you for this hint also.

> One thing I've joyfully noticed is how rare the instances where I need to
> activate Flash are becoming :-).

I hope that with time youtube will completely switch to html5, so flash player
won't be needed. Till then youtube-dl can be a good way to "switch flash player on,"
at least for youtube. :-)