Sorry I can not type Chinese in here,

but after I read your "handbook", I can not agree your way to do the
resize of DVD to divx.

Because the "Aspect Ratio" in every 16:9 DVDs are different. some of
them is 2.35:1, 2.10:1 ...

Please kindly read:
http://nickyguides.digital-digest.com/resize.htm

http://nickyguides.digital-digest.com/aspect.htm

for more clear concept to you.

And for diffenent between Bicubic and Bilinear
http://nickyguides.digital-digest.c...-vs-bicubic.htm