On 6/1/2015 10:46 PM, EE wrote:
> Is there any way to stop HTML5 videos from starting automatically when 
> the page loads with YouTube?  Flashblock is not working very well with 
> YouTube and SeaMonkey.  Surely there must be some setting in 
> about:config that would either prevent autostart of HTML5, or 
> alternatively, force YouTube to send Flash instead.
> 

I have the PrefBar extension from
<https://addons.mozilla.org/en-US/seamonkey/addon/prefbar/>.  I created
a checkbox for PrefBar to toggle the preference variable
media.autoplay.enabled between "true" and "false".

This does not necessarily cause a Web site to send Flash in place of
HTML5 media, but it does allow me to block the playing of HTML5 media.

Also, FlashBlock does have an option to block HTML5 media.

-- 
David E. Ross

I am sticking with SeaMonkey 2.26.1 until saved passwords can
be used when autocomplete=off.  See
<https://bugzilla.mozilla.org/show_bug.cgi?id=433238>.
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