
Originally Posted by
NaRuTo001
Well.. a lot more goes in the background than just file size. If the program is defaulting to h264 for the mp4 conversion, a same-quality conversion should actually yield a smaller file size due to the better efficiency of the H264 encode. (I say "should", because some auto-encoders I've played with will actually blow it up bigger for some bizzare reason).
If it's just slapping the file (xvid by default for Aone back then I believe), the file size shouldn't be that different.
Back on topic, it really depends on the settings and how the program wishes to muck around with the video based on its presets.
Instead of adjusting file size (if that's what you're doing), try to change the quality setting somehow if you're transcoding.