Any of the models I mentioned will work OK.
You need to set the shutter speed higher- depending on the speed of the line (you'll have to test) you'll probably need something faster than 1/2000sec--- most cameras go up to the 1/10000sec range. Remember that you'll still only get 1/30 sec time slices, but they'll be perfectly in focus.
As you compress this down for the web, you're going to have a trade-off between ability to see the fly line and file size/datarate. The two are not presently reconcilable.
At your service--