I am quite sure that the trial version uses the same encoding engine as the
commercial engine, otherwise it wont be a fair trial :-)

Its more likely you need to learn about using the software. What settings
are you using? Which template did you select in the wizard DVD or VCD ?

1Mb/s and 2Mb/s are quite low for movie sources unless you use 2 pass vbr.

But first of all is your original movie good quality? Unfortunately you
cannot increase the quality (compared to your source) by using any settings!