I've just downloaded the beta version of Motion Artist to play with excactly this kind of thing. More as a fun exercise than for actual viral attention or self-legitimization. (How would that help, anyway? I don't see it.)
So far, videos have almost always failed to get me interested in anything that is not a video. (I hate when a software tutorial section contains of nothing but videos.) One exception that comes to mind was J.C. Hutchins' trailer for Personal Effects: Dark Art
, but that one was exceptionally well-made.
Usually, some art samples and a good tagline will be enough to prompt me into checking a comic. It helps if there's a direct link, too, which is problematic within a video - you'll have to put it in the accompanying text somewhere.
If I have to stop the music I'm usually playing while I'm online, then click a video or maybe reload the page first because Noscript has blocked it, then
start the video - well, that's susally too much of a hassle, just to watch an ad.
That said, I've been thinking about making a book trailer for the new Conny Van Ehlsing book just for the sake of it - if I can find the time to do it. Not for the webomic - I don't really see that coming together. But that may be just me.
As for the two I've seen in this thread that actually qualify as trailers (and I'm not
fuzzy about offering feedback) - After the Dream had some nice pacing but overstayed its welcome by about 2 out of 3 minutes. Meadowhell had the already mentioned flaw that the comics pages were unreadably small, as well as some too-nervous blending. I do like the contrast with the shopping mall photos, though. But this is another one that had me at the tagline. That would have worked in any other medium, too.
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