Selected Start Time and End Time?

[mantis2k]

How can I convert a 10 minute clip from a 90 minute AVI file, starting at 40 minutes and finishing at 50 minutes? In other words, how can I code an AVISynth script to work between a range of 2 given offsets? Any help would be much appreciated!

[communist]

http://www.avisynth.org/Trim

[Richard Berg]

Then use the http://www.avisynth.org/ClipProperties to calculate the frame offsets from the time offsets. (frame # = int(time * framerate)...be careful of early rounding)