Hi Raghib,
Thanks for all those informations. It clearly appears right now that the cizor is not to cut, I thought TM was able to edit video after watching tutorials but it seems it wasn't about to cut but only to set a sequences order... I'm working in After effect with of course longer sequences than what I finally use. So, when it's time to get the final render... shorter is better. I'll try the trick you told me.
Thanks again.
Ticket to be closed.
Best regards.
GP