Simple is better, so I go w/ a single photo.
I can not tell you how many times a web video related to a news article has either failed to load, taken forever to load, loaded but not played, played but had no audio, played but played erratically, or hounded me to download some form of crapwear to see the video (usually full of toolbars, spy programs, etc). Often, some of these videos may play on my computer but not the wife's, or vice verse. The technology is really worthless.
Besides, I'm a photographer. What other options do I have for my work? Hanging a bunch of monitors or TV's on the wall, each one running a different video? You know, it's not 1965 anymore. That idea often fizzled in art galleries, much less on a wall at home.
Let's not forget that a video cannot be trusted to truthfully portray an event. Too many cooks in the broth, too many opportunities for prejudicial editing or outright dishonest manipulation of the viewer. With a still photo, unless it's been overcooked in PS (and it's usually apparent when this happens), what you see is usually what was in front of the lens. Actually, I wouldn't even trust a still image that couldn't be verified by looking at the negative, which probably leaves out 99.9% of anything news related, web, print, or otherwise.