Chopping up a video

i have an mepg video, i wish to cut out the other half of the video, which software is best for cutting it up without losing too much quality?

the video is about 1.5gb and runs for 20mins, i only need the first 10min of it, i don’t want to lost more than 30 percent of it’s orignal quality.

please recommand me a software, it oculd be shareware or freeware, please help me.

many thanks

Cuttermaran is freeware and will cut without any quality loss.