dot-build_zoom_expr: Build Piecewise Zoom Expression for FFmpeg
In compost: Video Compositing via 'FFmpeg'
.build_zoom_expr R Documentation
Build Piecewise Zoom Expression for FFmpeg
Description
Constructs a nested if() expression that steps between zoom values
at frame boundaries, with linear interpolation during transitions.
Usage
.build_zoom_expr(frame_starts, zoom_values, transition_frames)
Arguments
frame_starts
Integer vector of frame numbers where each segment begins.
zoom_values
Numeric vector of zoom values for each segment.
transition_frames
Number of frames for each transition.
Value
Character string with the FFmpeg expression.
compost documentation built on Aug. 4, 2026, 5:11 p.m.
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| .build_zoom_expr | R Documentation |
Build Piecewise Zoom Expression for FFmpeg
Description
Constructs a nested if() expression that steps between zoom values at frame boundaries, with linear interpolation during transitions.
Usage
.build_zoom_expr(frame_starts, zoom_values, transition_frames)
Arguments
frame_starts |
Integer vector of frame numbers where each segment begins. |
zoom_values |
Numeric vector of zoom values for each segment. |
transition_frames |
Number of frames for each transition. |
Value
Character string with the FFmpeg expression.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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