[orca-list] workaround for arrow key controls in HTML5 audio and video elements

[Kyle <kyle4jesus gmail com>]

If I tab to an audio or video element in Firefox using Orca, I can play 
or pause it, but I am unable to skip forward or backward or change the 
volume of the element without either using bypass mode each time I want 
to press an arrow key or quitting Orca. I tried turning off structural 
navigation, but this doesn't work either. Is there another workaround 
for this I haven't yet discovered? Even a sticky bypass mode that I 
could turn on and then turn off with the same key combination is better 
than either of the workarounds I've tried. Better still would be 
alternative key combinations for the arrow controls that can be used 
while focusing an audio or video element. Thanks for any help.
~Kyle