fallback_intermediate_image_sizes filter-hook . WP 4.7.0

Filters the image sizes generated for non-image mime types.

Usage

add_filter( 'fallback_intermediate_image_sizes', 'filter_function_name_1819', 10, 2 );
function filter_function_name_1819( $fallback_sizes, $metadata ){
	// filter...

	return $fallback_sizes;
}

$fallback_sizes(array)

An array of image size names.

$metadata(array)

Current attachment metadata.

Where the hook is called

$fallback_sizes = apply_filters( 'fallback_intermediate_image_sizes', $fallback_sizes, $metadata );

Where the hook is used (in WP core)