One more Windows 8/8.1 bug. This is alarming. Basic functionality broken.
Basically, MFCopy "trim" does not work in Windows 8/8.1. Works fine on Windows 7.
Steps to reproduce:
MFCopy -s 20000 -d 60000 input.mp4 out.mp4
Please see the output files (out_win8.mp4, out_win7.mp4) here:
https://drive.google.com/file/d/0Bxyb9Iftjh4DX1FsVENJWWt4Q3M/view?usp=sharing
The duration of out_win8.mp4 is 1:19 (incorrect) whereas the duration of out_win7 is 1:00 (correct)
MS developers, Please check this.