Allright, thx for your help, i close the topic.

yes, when i launch it for preview
just i clik on "play" in vegas for run it, and lag begin

did it. mp4 work well. thanks a lot.
work with all file or just .mp4 ?

but what about the source file (.avi)
why lag ? because i would like work with the source file for videomaking, not a file allready convert and reduce.

Thanks

Hi, The captures are good, no problem in the program. The source file capture (avi) run in windows media player and work well. Same for the exported file (mp4). But i can't use them for make à movie in vegas pro or adobe first élément. source file : vegas pro = lag adobe = lage exported file = vegas...