Dear Friends: I have a question about using evalvid pack. After execute ./MP4Box -hint -mtu 1024 -fps 30 -add a01.m4v a01.mp4 command to produce .mp4 file when running ./mp4trace -f -s 192.168.0.2 12346 a01.mp4 > st_a01 , to send a hinted mp4-file per RTP/UDP to a specified destination host the pointed file (st_a01) is empty. i am using smallko method to integrate evalvid in ns. Anyone can help me solve the problem? I mention that i'm using ns 2.30 with visual c++ ver 6.0 in a single pc. Thank you in advance: pejman panahi. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com