User Manual

Table Of Contents
Keyframe Display in the Time Ruler
When you select a node with keyframed parameters, those keyframes appear in the Time Ruler
as little white tic marks, letting you navigate among and edit keyframes without having to open
the Keyframes Editor or Spline Editor to see them.
The Time Ruler displaying keyframe marks.
To move the playhead in the Time Ruler among keyframes:
Press Option-Left Bracket ([) to jump to the next keyframe to the left.
Press Option-Right Bracket (]) to jump to the next keyframe to the right.
The Fusion RAM Cache for Playback
When assembling a node tree, all image processing operations are rendered live to display the
final result in the viewers. However, as each frame is rendered, and especially as you initiate
playback forward or backward, these images are automatically stored to a RAM cache as
theyre processed so you can replay those frames in real time. The actual frame rate achieved
during playback is displayed in the Status bar at the bottom of the Fusion window during
playback. Of course, when you play beyond the cached area of the Time Ruler, uncached
frames need to be rendered before being added to the cache.
Priority is given to caching nodes that are currently being displayed, based on which nodes are
loaded to which viewers. However, other nodes may also be cached, depending on available
memory and on how processor-intensive those nodes happen to be, among other factors.
Memory Limits of the RAM Cache
There is a single setting in DaVinci Resolve for limiting the RAM used for caching. This setting is
located in the DaVinci Resolve Preferences Memory and GPU panel.
Limit Fusion Memory Cache To: This slider sets the maximum amount of RAM that
Fusion can access for caching. It is a subset of the RAM allocated to DaVinci Resolve.
You can assign a maximum of 75% to Fusion from DaVinci Resolve’s total RAM
allocation. When not using the Fusion page, the RAM is released for other pages in
DaVinci Resolve.
There are two settings in Fusion Studio for limiting the RAM used for caching. These settings
are located in the Preferences Memory panel.
Limit Caching To: This slider sets the maximum amount of RAM used for caching.
The 60% default setting on a 32-GB system limits the cache to 19.2 GB. The maximum
amount you can assign to Fusion Studio is limited to 80% of the total system memory.
This leaves a minimum amount of memory for other applications and the operating
system.
Leave at least # MBytes: This number field further limits caching in cases where the
system’s available free RAM drops below the entered value. For instance, setting this to
200 MB attempts to keep 200 MB of RAM free for the OS or other applications. Setting
the number field to 0 allows Fusion Studio to use the full amount of RAM specified by
the Limit Caching To setting, ignoring other apps.
Chapter – 53 Exploring the Fusion Interface 988