Frame rate, Scanning method – Apple Final Cut Express HD User Manual
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An Introduction to Final Cut Express HD
Frame Rate
The frame rate of your video determines how quickly frames are recorded and played
back. The higher the number of frames per second (fps), the less noticeably the image
flickers on screen. There are several common frame rates in use:
 24 fps: Film, certain high definition formats, and certain standard definition formats
use this frame rate. This may also be 23.98 fps for compatibility with NTSC video.
 25 fps: Standard definition PAL
 29.97 fps: Standard definition NTSC
 59.94 fps: 720p high definition video frame rate. This can also be 60 fps.
For more information, see Appendix B, “
Scanning Method
Video frames are composed of individual lines, scanned from the top of the screen to
the bottom. Lines may be scanned progressively (one line at a time), or interlaced
(every other line during one scan, and then the alternate lines on a subsequent scan).
Standard definition video uses interlaced scanning, while high definition formats may
use either interlaced or progressive scanning. For more information, see Appendix A,
“