Chapter 8: Encoding
182
Always use a frame rate that is an even divisor of the source frame rate; doing so produces
much smoother motion. For example, if you have a 24 fps source file, only use frame rates of 6,
8 and 12 fps. Cleaner also supports decimal frame rates.
Technically, NTSC is 29.97 fps, not 30 fps. However, for movies displayed on the Web or in
CD-ROM projects, you may not notice a difference between 30 fps and 29.97 fps. If you are
creating video for broadcast, Cleaner properly supports 29.97 fps.
Same as Source
Enable the Same as source checkbox to match the source media frame rate.
Keyframes or Insert Keyframes
Like frame rate, the keyframe frequency affects the image quality of the final encoded movie.
How frequently you should set keyframes depends on the codec used, the content of the movie
and how the movie is to be viewed.
Ideal NTSC-Derived Frame Rates
30 fps
(all frames)
15 fps
(every other frame)
10 fps
(every third frame)
7.5 fps
(every fourth frame)
6 fps
(every fifth frame)
5 fps
(every sixth frame)
Ideal PAL-Derived Frame Rates
25 fps
(all frames)
12.5 fps
(every other frame)
8.67 fps
(every third frame)
6.25 fps
(every fourth frame)
5 fps
(every fifth frame)
Frame Rates Derived for Film Projects
24 fps
(all frames)
12 fps
(every other frame)
8 fps
(every third frame)
6 fps
(every fourth frame)
Содержание 64006-051108-9001 - Discreet Cleaner - Mac
Страница 1: ...from discreet November 2000 ...
Страница 8: ...Contents viii ...
Страница 16: ...Chapter 1 Introduction 8 ...
Страница 24: ...Chapter 2 Capture 16 ...
Страница 54: ...Chapter 4 Projects 46 ...
Страница 68: ...Chapter 5 Settings 60 ...
Страница 148: ...Chapter 7 Formats 140 ...
Страница 160: ...Chapter 8 Encoding 152 ...
Страница 220: ...Chapter 8 Encoding 212 ...
Страница 248: ...Chapter 11 Workflow 240 ...
Страница 254: ...Chapter 12 Troubleshooting 246 ...
Страница 284: ...Glossary 276 ...