Did you make the changes I suggested in my previous post?
Yes, I did.
I think that it has any union with f4l2, because when I put in terminal "v4l2-ctl -v width=720,height=576", Kdenlive capture as 720x576, (default about 640x480), but unfortunately PCLinuxOS PVR not. Unluckily kdenlive capture too fast (doesn't keep 25), so...
I had to comeback to XP for solution my problem.