To: lance@lancealot.com
Dear user,
Sorry for the delay in reply.
You need to check the specification of iMovie and Final Cut Express to find the best profile available.
It is not possible to save a part of the video file, unless you delete all the other parts that are not needed in AVS Video Editor.
What you can do is use AVS Vieo Converter to split your file into several ones, follow the link below to find the detailed instructions on how to do it:
http://onlinehelp.avs4you.com/AVS-Video-Converter/Features/splitting.aspx
Please let me know if I can be of any further assistance to you.
Kind regards