the bose stereo has nothing to do with Video
to watch the movie, mhl/hdmi media cable from iphone to TV
or
an maybe an apple air play,
or
one of the video 'Casting' sticks, that is a receiver that plugs into the hdmi on the TV, and the phone sends/'casts' the signal to that
try goggle "iphone cast video to tv"
https://www.google.com/search?num=20&site=&source=hp&q=cast+iphone+video+to+tv&oq=iphone+cast+vi&gs_l=hp.1.2.0l2j0i22i30k1l8.1759.5374.0.10179.15.12.0.3.3.0.263.1603.0j9j1.10.0....0...1c.1.64.hp..2.12.1489.0..0i131k1j0i20k1j0i22i10i30k1.C2OzYba1pTk