Am 18.09.2017 um 03:28 schrieb Joshua Achatz: Which version of DOM are you using? 16:9 is the same as 1.78. I knew the Content->'Scale to fit menu' would come over us at one time... ;-) These two options 'Scale to fit' are basically shortcuts to fill the screen in an easy way - but they usually cause cropping in an uncontrolled way. They should go under the list of other ScaleTo options, but for some reason at the time, there was no space there for it. It's been a while, but I remember no one was really happy with that solution. Normally, DCP-o-matic detects the aspect ratio of footage automatically, if it is flagged correctly, and if there is no letterboxed content. So, in your case, DOM did probably select 16:9/1.78, and then all you need to do is to confirm the flat container under DCP as far as scaling/aspect ratio goes. Some people say that 150MBit/s is enough. Yes, may be, but, the 'standard' spec goes up to 250MBit/s, and, with 30fps, you could need a bit more. Chances are high your footage doesn't need it, but as 16:9 is 'near' full frame, and at 30fps, just choose 200MBIt/s and then forget about that setting. If you're picky, use 235MBit/s, but don't try 250! Yes, you need to crunch through the full file again if you changed the data rate, as that concerns every single frame from the beginning. DCP-o-matic should start encoding from scratch when you change the datarate, but it also could be a point for a nice little bug (I doubt it). - Carsten