Sony Vegas Pro 13 insane 4k export size
There may not be a direct preset for 4K, but you can simply use the Mainconcept AVC module to export 4K. Simply select one of the 1080p presets, like Internet 1080p, then customize template to choose a custom frame size and enter your project resolution e.g. 4096 x 2304. Change average bitrate to 40,000,000. Match the frame rate to your project frame rate, and you should be good to go.