private void initPictureGiverWithAVIGiver(string path) => pictureGiver = new VideoAVIGiver(path);
private void initPictureGiverWithMPEGGiver(string path) => pictureGiver = new VideoMPEGGiver(path);
private void initPictureGiverWithSeparatePhotoGiver(string path) => pictureGiver = new SeparatePhotoGiver(path);