Apple Logic Pro 7 - Manual (Page 622)

622 Chapter 20 Video
Maximum Cache Size (in MB)
Amount of memory reserved for the Thumbnail cache. 40 MB is recommend for
medium resolution. Use a higher value for higher resolutions. The memory will only be
occupied when actual movie data is displayed.
Automatic Scene Cut Detection/Scene Markers
The Find Scene Cuts function is available in the context menu of the movie window or
via the Options > Movies submenu.
The movie will be analyzed for significant content changes, and (SMPTE locked)
markers will be generated. These positions will also be indicated by thumbnails in the
video track.
The function currently uses a fixed threshold value, which works quite well for most
types of movies (cartoon, real life, CGI etc).
How it works
The Find Scene Cuts function follows the “decision path” outlined below, when
determining which part will be evaluated:
• marquee selection
• cycled song part
• selected objects
• all—if none of the above criteria are met
• This decision path is also used for the Remove Movie Markers function.
Remove Movie Markers
The Options > Movie > Remove Movie Markers facility allows you to remove
recognized cuts (movie markers) inside a defined song part. In cases where there’s no
marquee selection, no active marker and no object selection, all markers are removed.
New Thumbnail Algorithm
As a spin-off of the Find Scene Cuts function, a new thumbnail positioning system is
used.
It no longer uses a fixed number of pixels between two thumbnails, but rather a fixed
time between two thumbnails—usually of one second in duration.
Should the tempo or zoom settings cause two thumbnails to overlap when employing
this method, the distance will be multiplied until the overlap disappears. This approach
makes much more efficient use of cache memory.
If the movie is removed from the Song (by opening a new movie), a new check for
scene markers (SMPTE locked, name of “Scene“) provides you with the option to
remove these markers.