I have Roxio VHS to DVD 3 Plus (Build 301B91B ENU). My source is a Hi8mm Digital Tape. From Record, Edit, and Save Option, when I export, at best quality, the captured video to my COMPUTER folder, the software gives me a resolution choice of 640 x 480 OR 720 x 480. The same exported video at 640 x 480 has a much larger file size that when it is exported at resolution 720 x 480 to my COMPUTER folder. Both files (640 X 480) and (720 X 480) exported to my COMPUTER folder, have all other parameters equal (i.e. both have the data rate = 15000 and export with best quality setting).
For example, when I exported to my COMPUTER 1 min duration of a captured Hi8mm tape, the size of the file exported at 640x480 is 123,716 KB and the size of the exported at 720x480 file is 70,738 KB – much smaller file size in my COMPUTER folder:
Does that mean that the 640x480res file is higher quality when I use the COMPUTER file for future edits? If not, why the larger size?