Hi
Exports are time consuming and a lot depends on the basic computer speed but you can speed up the process to some extent in the export settings windows by trying a different quality setting or changing the format or the fps value.
Example: **For a basic 1 minute mpeg 4 video** exported to the PC (Old Vista model) as a 1920 x 1080 H264 60fps video..
With the quality setting to 51 (low quality... Export time was 9 minutes (Quality not worth watching)
With quality setting at 25 (about middle)....Export time was 16 minutes (Quality OK) (Default value is 18)
With quality setting at 10 (High quality)......Export time was 35 minutes (Good output image)
Changing the fps to 30 export times were shortened by about 1/3
Exporting as an MPEG4 (Native) .avi at 30fps further reduced the export times by about 1/2 using the low quality setting (i.e. The 1 minute video exported in 4 minutes instead of 9 minutes. However in practice you would use a higher quality setting so export times would be longer. Nevertheless it should give you some idea of the time exporting takes. I think it is fairly linear.
Nat