How to make a background?
<a-sky> Tag it is possible to add a colored background, an image or a video:
<a-sky id="sky" color="#ECECEC" ></a-sky>
It is also possible, to add the
src Attribute. Be aware that you have to use a 360° image or video. Use the term equirectangular image to search for background images.
<a-sky id="sky" src="videos_sky/richoh1_0_2.mp4" ></a-sky>
Since Version 0.9 it is possible to set the color in the
<a-scene background="color: red">