Autodesk 64006-051108-9001 User Guide - Page 75

The Image Tab 67 Shift Fields You can change the dominant field for interlaced output formats using the Shift Fields pulldown menu. Up - shifts both interlaced fields up one line. Down - shifts both interlaced fields down one line. Both choices change the field dominance of the interlaced output. Telecine If you have material that is 24 fps, such as that shot on film, and want to change the frame rate up to 29.97 fps for NTSC video output, the telecine filter can perform this conversion by adding pulldown frames. To change to 29.97 frame rate: 1. In the Image tab, click the Telecine check box to activate it. 2. In the Encode tab, select 29.97 fps. This filter uses the standard 3:2 pulldown sequence. Blur Applying a mild blur to a noisy source video used to be a common practice in digital video production to remove the noise and enhance encoding. However, the Cleaner Adaptive Noise Reduction filter generally produces superior results to those achieved with the Blur filter. Avoid using the Blur filter except in special cases. The Blur filter offers three preset blur settings and a Custom option. The Custom option enables you to control the radius and amount of the blur. The higher the Radius slider is set, the more extreme the blur. The Amount slider controls how much of the blurred image is overlaid onto the original image. Setting this slider to 100% produces an image that is entirely the result of the blur, while 50% blends the original sharp image with the blurred image at half opacity. Using these two controls together gives you a fine level of control over the blurring, and gives some interesting soft-focus effects. Note: The preset blurs are specially optimized and faster than the Custom option. Sharpen Sharpening the video does not usually improve encoding per se, but sometimes improves the subjective image quality of video that has been scaled up by making it look more in focus. However, excessive sharpening of a noisy video source that is being scaled up from the original degrades encoding, so use this filter sparingly.