抖音解说类视频封面裁切.Douyin commentary video cover cropping. 会将一张图片裁切成三张大小为4：3的图片，如果原始图片的大小不为4：9，则沿着这张图片的中心点取最大的4：9比例的图片进行裁切。 Will crop an image into three images with a 4:3 aspect ratio. If the original image size is not 4:9, it will crop the largest 4:9 aspect ratio portion along the center of the image. tip：We only support PNG pictures right now.