Originally Posted by unicorn23`

Hi,

My guess is you selected NTSC instead of NTSC film. NTSC has a frame rate of 29.97 which can explain the slow or choppy playback easily as there is a massive difference in the source and o/p frame rates. Even if you did select the NTSC film option then there should ideally be no problem.

The problem with NTSC is that the frame difference is 6f/s so every second there would be a spare of 6 seconds which the encoder would have to fill by duplicating 6 frames every second in order to fill the 29.97 frame rate requirement of NTSC which in turn would explain the choppy playback.

Unicorn23'