Movie preferences are only available when Show Advanced Tools is selected in Advanced preferences.
“Movie to project” slider: Fine-tunes the start point of a movie.
Cache Resolution pop-up menu: Defines the resolution of the thumbnails kept in the temporary internal memory (cache). Higher resolutions display more detail, but take up more space in the cache.
Maximum Cache Size slider: Defines the amount of memory reserved for the thumbnail cache. Forty megabytes is recommended for medium resolution. For higher resolutions choose a higher value. This section of reserved memory will only be occupied when actual movie data is displayed.
“Lock movie window when changing screensets” checkbox: When selected, the Movie window stays in its current user-defined position, and playback continues, when changing screensets.