an example might be helpful to see what is really going on.
your SWF is actually looping. SWFs by will by default loop. the parameter 'loop' with a value of 'false' will keep it from looping.
what i presume you are really asksing about is the FLV ( the 'video' ) that is actually playing inside the SWF.
FLVs will not play natively on a web page/in a browser. they need to be inside a FLV player, which is then outputted inside a SWF. It is this SWF which is actually placed inside the HTML - the web page.
add to this that the FLV player needs a 'skin' if you want some sort of controls. a lot of programs - and i will assume Premiere is one - will take care of all of this and will combine all of these these and output for you the completed SWF, which is actually what you embedded in your web page.
Your HTML/web page has no idea that there is actually a video playing inside the SWF. FLV players will usually play once, and DO need some form of code, or instruction to once completed, to play over again.
as a quick test,and example, take a look at this page. i am using your exact code, placed in a absolute minimal web page. the only thing i changed from your code was to change it to the name of MY swf.
my SWF, created in Flash, has a FLV video player component which plays a 30 second video. the swf itself is 7 seconds long. approximately every second, ( every 15th frame on a swf with a frame rate of 15 frames per second), the number above the player changes.
from this you can see that the SWF itself is actually playing in a continuous loop, while the FLV is playing independent of the SWF's timeline, and it stops once it is done.
video does NOT loop
and here is the same webpage, but now the FLV player is told by some simple code ( inside of Flash, which outputs theSWF) to loop the FLV
vieo DOES loop
that might be more info than you thought you were asking for! if you have flash, i could walk you through the steps. if you don't, and your swf really is just a simple FLV player playing that FLV, maybe i could output a new SWF for you. let me know
PS: i use, and recommend using SWFObject to embed your SWFs inyour Web pages