[bobs23]

There are some basic technical things that must be covered. As previously stated PAL runs at 50hz 625 lines 25fps. NTSC is 60hz(59.94 actually) 525 lines 30 fps. In basics you are much better to go from PAL to NTSC as you are essentially downsampling the line rate. The wonderful FCC has made our system quite complex, video runs at either 30fps or 29.97fps. This all came to be when the US made the change from black and white broadcasts in the 50's to try and intigrate color with a minimal equipment changeover at the TV stations.Film runs at 24fps and when transferred to video it must fill in the extra 6 frames by creating a pull down meaning every other frame is a frame and a half. In a PAL format everything is just 25fps. Also when doing a PAL to NTSC you also must pitch and speed correct by 4% to account for the 25 to 30 frame rate. I work with this stuff every day, if anyone would like a more detailed explaination I'd be glad to go into more detail.