Loading Movies into RAM for Better Playback
QuickTime has two memory (RAM) options you can use to improve playback
performance. Preload puts the entire movie into memory before it is played; Cache
keeps movie data in memory after it has played. This option is useful for small files you
want to loop.
With QuickTime Pro, you can adjust memory options for a QuickTime movie track.
To adjust memory options for a track:
Choose Window > Show Movie Properties.
Select the track you want to adjust and click Other Settings.
To put the track into memory, select “Preload this track.”
To keep track data in memory, select Cache.
Use these options only with tracks that contain very small amounts of data; too much
data in memory may cause poor performance, system errors, or unpredictable results.