FFmpeg官方推荐书目（英文版）：BriefContentsIntroduction121.FFmpegFundamentals152.DisplayingHelpandFeatures293.BitRate,FrameRateandFileSize604.ResizingandScalingVideo645.CroppingVideo696.PaddingVideo737.FlippingandRotatingVideo778.Blur,SharpenandOtherDenoising819.Overlay-PictureinPicture8