6.
Tip: To quickly undo and redo operations in the Undo/Redo History window,
Clearing the Undo/Redo History for the current file
Clearing the current file’s Undo/Redo History frees up disk space by deleting the file’s temporary undo/redo files. However, deleting these temporary files prevents you from undoing changes made to the file since it was last saved (or beyond, if you have the Allow Undo past Save check box enabled on the General tab of the Preferences dialog). To clear the undo/redo history for the current file, go to the Edit menu and choose Clear Undo/Redo History.
Note: A file’s undo/redo history is also automatically cleared when you close the file or exit the software.
Selecting status formats
The status format determines how a file’s position and length information is displayed. The following table briefly describes supported status formats (hh=hours, mm=minutes, ss=seconds, and ff=frames). For more information, see SMPTE Timecode on page 339.
Format name | Description | Format |
Samples | Number of samples | Numbered (starting with zero) |
|
|
|
Time | Hours, minutes, seconds, and milliseconds | hh:mm:ss.sss |
|
|
|
Seconds | Seconds and fractions of seconds | sssss.sss (to three decimal places) |
|
|
|
Time & Frames | Hours, minutes, seconds, and frames. | hh:mm:ss.ff |
|
|
|
Absolute Frames | Frames and fractions of frames | Numbered (starting with zero, to |
|
| three decimal places) |
|
|
|
Measures & Beats | Measures, beats, and quarter beats | measures:beats.quarters |
|
|
|
SMPTE Film Sync (24 fps) | SMPTE at 24 frames per second for | hh:mm:ss:ff |
| synchronizing with film |
|
|
|
|
SMPTE EBU (25 fps, Video) | SMPTE at 25 frames per second for | hh:mm:ss:ff |
| European Broadcasting Union |
|
|
|
|
SMPTE | SMPTE at 29.97 frames per second | hh:mm:ss:ff |
|
|
|
SMPTE Drop (29.97 fps, Video) | SMPTE at 29.97 frames per second using | hh:mm:ss:ff |
| dropped frame numbers |
|
|
|
|
SMPTE 30 (30 fps, Audio) | SMPTE at 30 frames per second | hh:mm:ss:ff |
|
|
|
Audio CD Time | Hours, minutes, seconds, and frames with a | hh:mm:ss:ff |
| frame rate of 75 frames per second for |
|
| creating |
|
|
|
|
80 CHAPTER 3