isVideo property

Implementation

bool get isVideo {
  if (this is File) {
    var f = this as File;
    return f.mimeTypeType == "video" || f.fileExtensionWithoutDot.flatContainsAny(["mp4", "mkv", "webm", "flv", "mov", "wmv", "3gp", "3g2", "m4v", "avi"]);
  }
  return false;
}