isVideo property

Implementation

bool get isVideo {
  // Best effort if [mime] is `null`.
  if (mime == null) {
    return [
      'mp4',
      'mov',
      'webm',
      'mkv',
      'flv',
      '3gp',
    ].contains(extension.toLowerCase());
  }

  return mime?.type == 'video';
}