First, Sorry for my english...i'm italian. In few words this is my problem:

I've aquired a video from my dv camera in dv-avi format. Then i've worked on it without problems. Putting it in timeline it was correctly recognized like a 4:3 PAL video without any sort of stripe on left and right side. Subsequently, on the same mini DV tape, i've recorded some other minutes of video...but now, when i try to insert this new video in timeline, it isn't recognized like 4:3 video and appears whit lateral stripes. I haven't changed anything on my camera and nothing is changed in the importing-procedure (the same of before..dv-avi). These are the two report of "details button" in cyberlink power director 5.

Video correctly recognized as 4:3
Tipo: DV-AVI
Durata originale: 00:14:31:06
Risoluzione: 720x576
Frequenza fotogrammi: 25.00 fps
Proporzione: 4:3

Video with stripes
Tipo: DV-AVI
Durata originale: 00:24:47:05
Risoluzione: 720x576
Frequenza fotogrammi: 25.00 fps
Proporzione: 720:576

What can i do to delete the stripes? Still sorry for my english.