its because you just click to open it directly
to use it correctly
1. open cmd,click start -> run -> type cmd and enter
2. copy the path of the flvtool2 folder
3. type cd "path you copied",to paste it on the cmd,right click to paste
for example:
Code:
cd C:\Documents and Settings\User\Desktop\flvtool2
then press enter
4. now type the command
Code:
flvtool2 -C -i [start time in milliseconds] -o [end time in milliseconds] [input file name] [output file name]
for example:
flvtool2 -C -i 90000 -o 120000 Youtube.flv Splitted.flv
the command does split the flv starts from 01:30 to 2:00
1 second = 1000
Try it yourself