[swfmill] How to use swfmill to check the duration of a swf

[Ralf Fuest]

There is no movie tag in swfml basic. The frames attribute in the Header
tag isn't always reliable. You need to count the "ShowFrame" tags, that
are direct children of the Headers "tags" tag. But don't count all
"ShowFrame" tags, because there might be more tags than frames in the
swf.

Ralf

> But there is no movie tag.
> 
> So does that mean this swf should only take 1/25 of a second?