AEMMA recently put forth a public deed of arms in Ontario. In my opinion, the conditions of victory were quite nice, balancing historical accuracy and realism :

The conditions were. Timed bouts not exceeding 3 minutes in duration or until one of the following conditions were met.

1. 3 landed blows with the point within the limbs
2. Unbalanced and cast down
3. Forced from the lists
4. Disarmed

There are no videos yet, but that will no doubt change. Watch for updates.

Of course, if you just want to watch two guys in armour fighting, have a look at the ARMA video.

The Guild of Armoursmiths have posted a rather good video showing a number of techniques with different weapons including longsword, messer, dagger, wrestling, and fighting in armour.

Take a look: (link)