>starting out as 190x1080 will save you a load of hurt on the other end.
Not really. Firstly, you can always export at full raster HD when you're done with your offline. Graphics may look a little soft if you created them in 1440x1080, but if you're down converting, it's not a big deal. Secondly, the adobe apps are able to work with/in 1440x1080. I'm not sure if nuke takes prores.
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