PowerDirector: Extract single scenes from Movie --> HUGE(!) file

[Katzwinkel]

Hello,
I'm totally unexperienced in Video-editing. For some time now i have been trying to extract single scenes out of some movies (AVI-Files)via PowerDirector 3 (Yeah is old, but it's all i have). I just cut away everything but the scenes i'm interested in. But then when i try to make a new AVI-File out of this the resulting file is several Gigabytes large. I don't understand this, because the original file was only about 500-600 Megabytes large. even when i set the quality to very low and try out different codecs i get these huge file-sizes.
Shouldn't i get lower file-sizes when i cut most of the movie away?
What possibilities do i have to extract scenes without insanely boosting up the file-size?

[RabidDog]

You are probably using an divx/xvid file for input and getting raw DV as output?
What are the inputs outputs all details use mediainfo
What is the intended purpose? Dont be shy, even if its to make Gloop for Youtoob!
A single scene would normally be a picture like a camera takes, sounds like you mean clips (short lengths of film).
Powerdirector6 or 7 are sometimes/normally packaged with ultracheap usb capture dongles.