Function plan_composition 

pub fn plan_composition(
    composition: &Composition,
    compositions: &[Composition],
    sources: &[MediaSource],
    canvas: (u32, u32),
) -> Result<CompositionPlan, PlanError>

Compiles composition’s output into steps as a clip’s composition, where clip nodes draw the clip’s picture. compositions resolves group nodes and sources resolves media nodes.

The project must be valid (alpha2_model::Project::validate).

Errors

Returns PlanError when there is no output, a needed input is unconnected, or the plan nests too deep or grows past MAX_PLAN_BYTES.