Videos and photos each have their place.
Videos are perfect to show how-to's and processes, with live commentary, or show things that have inherent movement such as water sheeting on paint.
Photos have a much better level of detail to show befores and afters, or pin-point areas of specific interest such as a scratch, stains, nice beading, etc.
For before-afters I will prefer a single, well focused wide-angle photo over a shaky walk-around video anyday. And HD video helps only marginally since it is usually over-compressed.
Of course some of these issues don't apply to skilled videographers, but IME most people have better skills with a still camera than a video camera and will achieve better visual quality with a $100 point&shoot than a $800 videocam.
And any combination of video or photos is always better with a write-up. The write-up can contain less details if they are included in dialogue in a video.
These are just my opinions.