BUG: Necessary Disc Space not Calculated Properly

I just spent two hours fixing a problem that turned into another because while test-rendering around the first bug, I filled my output disc and neither Premiere nor Media Encoder complained. So I let them render, twenty minutes at a go, and then scratched my head wondering why my final output files were 0 bytes.

I've reported this through the feature request/bug form, but I wanted to put it up on the forums as well -- and I've proposed a more thorough correction here.

Steps to Reproduce Bug:

1. Stage a disc with, let's say ~4Gb's free space remaining.

2. Export an .mp4 through either Media Encoder or Premiere with an estimated file size of, let's say 2.7Gb's.

Results:

Outputted .mp4 will have a file size of 0 bytes, containing nothing.

Reason:

The .mp4 is just the wrapper. Media Encoder/Premiere will first output a distinct .m4v of video-only and .aac of audio-only to the disc at the specified save location. Then it will try to combine their contents into a third file, the .mp4. But because the .m4v and .aac have already consumed 2.7Gb's disc space of the 4Gb's remaining, there's not enough space to duplicate their contents into the final .mp4. The disc space required to create the .mp4 is not the estimated file size, it's double.

Expected Results:

An error should be thrown before attempting export when the disc hasn't enough free space to create the final file. Additionally, if the constituent parts of a media file HAVE been successfully rendered and written to disc, but the wrapper can't be finalized for any reason, those video/audio files should be preserved while the user is prompted to either free up space on the disc or select another location for final output.