a resolution of 720x576 at 25fps,
...dv output is something we're currently working on for Gem, via the multiple_window branch...but this seems like a weird resolution? Aha, seems it's for 50Hz field rate...anyway, I guess it'll depend on what platform your using, also: we definitely have found that sometimes if you give the codec something (like aspect ratio/size) that it doesn't like, it can really take a speed hit while it's morphing the data into something it does like...
that's the standard dv resolution of dv pal.
lg martin