I am working with a 48 minute project in 4K (technically QFHD). It's about a 6 1/2 hour export, and it seems to go perfectly fine, but as soon as it reaches the end the status bar doesn't disappear like usual (no green checkmark to show that it's finished). It just sits there. 00:00:00 time remaining, no error messages, and the software isn't frozen/non responsive. I can pause and start the process, it just doesn't do anything. The light on the front of my PC is still flashing a lot, indicating that it's still working pretty hard on something, but it's been over an hour now like this.
Screencap below. I'm using CS6 on a PC with Windows 8. Source footage is a 3840x2160 ProRes file. Output is a 3840x2160 .mp4 with 2-pass VBR at 140Mbps. I have been successful with creating 4K mp4 vids in Premiere in the past.
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