Struct FilterComplex 

pub struct FilterComplex {
    pub overlay: Option<(u32, u32)>,
}

A -filter_complex graph. For now it models the most-used multi-input operation: overlay — compositing a second input over the first (logo / watermark / picture-in-picture). The labels ([0:v][1:v]...) are parsed but the wiring is fixed: input 0 is the base, input 1 the overlay.

Fields

overlay: Option<(u32, u32)>

(x, y) placement of the overlay’s top-left on the base, or None if the graph has no overlay.

Implementations

impl FilterComplex

pub fn parse(spec: &str) -> Result<FilterComplex>

Parse a filter_complex spec. Recognizes overlay=X:Y (numeric, plus the common corner shorthands W-w, H-h resolved against the base size at apply time — for now numeric offsets only).