As a long time user of Apple's Compressor 3, I frequently used the size setting of "50% of source" under the automatic column in the video dimensions tab. I recently upgraded to Compressor 4 and discovered the automatic column no longer has this option, providing only specific sizes of "Up to..." certain constrained proportions. Am I missing some changed feature here? Does anyone know how to create a custom setting in Compressor 4 that automatically renders 50% of whatever the source size is? Thanks, Eric.