@spec capabilities() :: [atom()]

Lists the AV transformation capabilities supplied by this processor.

@spec normalize(map()) :: {:ok, map()} | {:error, term()}

Validates and canonicalizes a preset-led AV variant specification.

Image-output and waveform presets are normalized locally; video and audio recipes are delegated to the AV recipe implementation.

@spec normalize!(map()) :: map()

Returns a canonical AV variant specification or raises for an invalid recipe.

@spec process(Path.t(), map(), Path.t()) :: {:ok, Path.t()} | {:error, term()}

Processes an AV source into a destination using a normalized variant recipe.