It sounds like you have 2 questions.
- Where to find the .wmv
- How to embed it in the html
for 1. maybe broaden your search to include ceremonies or burials (plenty of those lately, though coffin photos are now censored) where the flag folding was part of the overall event.
for 2. just look through other web sites that embed video and find one that does what you like, then “view source” and examine their html.
It sounds like you don’t need it, but for example Forumosa’s hosting provider probably has statistics about which browsers are visiting Forumosa, this would confirm your idea of simply using .wmv. Though you may want to stick to .wmv 8 not 9, I bet many of those Microsoft using visitors may be on windows 98 or 2000. Possible that the stats would give you a cut at that too. I still think flash animations are arguable. Again, what do other sites do… generally there is a reason or best practice, and no need to try to invent a new wheel.