ffmpeg

Documentation

Index

• Constants
• func Concat(filePath, dst string) error
• func GetFrame(src string, f Frame) error
• func H264ToH265ByIntelGPU(filePath, dst string) error
• func ImgToAvif(filePath, dst string) error
• func ImgToHeif(filePath, dst string) error
• func ImgToJxl(filePath, dst string) error
• func ImgToWebp(filePath, dst string) error
• func ImgToWebp2(filePath, dst string) error
• func ImgToWebpWithOptions(filePath, dst string, quality int) error
• func ToAV1ByLibaomav1(filePath, dst string) error
• func ToH265ByXlib265(filePath, dst string) error
• func TransferFormat(filePath, dst string) error
• func TransferFormatGPU(filePath, dst string) error
• type Frame
  • func (f Frame) String() string

Constants

const CommonCmd = `ffmpeg -i %s `

const ConcatCmd = `ffmpeg  -f concat  -safe 0  -i %s -c copy -y %s`

const GetFrameCmd = CommonCmd + `-vf "select=eq(pict_type\,%s)" -fps_mode vfr -qscale:v 2 -f image2 %s/%%03d.jpg`

const GifToWebpCmd = CommonCmd + `-c:v libwebp -lossless 1 -quality 100 -compression_level 6 %s.webp`

const H264ToH265ByIntelGPUCmd = `ffmpeg -hwaccel_output_format qsv -c:v h264_qsv -i %s -c:v hevc_qsv -preset veryslow -g 60 -gpu_copy 1 -c:a copy %s`

const ImgTAvifCmd = CommonCmd + `-c:v libaom-av1 -still-picture 1 %s.avif`

const ImgToHeifCmd = CommonCmd + `-crf 12 -psy-rd 0.4 -aq-strength 0.4 -deblock 1:1 -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" -preset veryslow -pix_fmt yuv420p101e -f hevc %s.hevc`

const ImgToHeifCmd2 = `` /* 206-byte string literal not displayed */

const ImgToHeifCmd3 = `` /* 238-byte string literal not displayed */

const ImgToJxlCmd = CommonCmd + `-c:v libjxl %s.jxl`

const ImgToWebpCmd = CommonCmd + `-c:v libwebp -lossless 1 -quality 100 -compression_level 6 %s.webp`

const ImgToWebpWithOptionsCmd = CommonCmd + `-c:v libwebp -quality %d %s.webp`

const ResizeCmd = CommonCmd + `-vf "scale=iw*.5:ih*.5" %s`

const ToAv1Cmd = CommonCmd + "-c:v libaom-av1 -crf 30 -row-mt 1 -tiles 2x2 -y %s"

const ToH265Cmd = CommonCmd + "-c:v libx265 -preset veryslow -crf 28 -y %s"

const TransferFormatCmd = `ffmpeg -i %s -c copy -y %s`

const TransferFormatGPUCmd = `ffmpeg -hwaccel qsv -i %s -c copy -y %s`

Functions

func Concat

func Concat(filePath, dst string) error

func GetFrame

func GetFrame(src string, f Frame) error

func H264ToH265ByIntelGPU

func H264ToH265ByIntelGPU(filePath, dst string) error

func ImgToAvif

func ImgToAvif(filePath, dst string) error

func ImgToHeif

func ImgToHeif(filePath, dst string) error

func ImgToJxl

func ImgToJxl(filePath, dst string) error

不可用,没有注明色彩空间的原因。需要显式写明 像素编码格式、色彩空间、转换色彩空间、目标色彩空间、色彩范围

func ImgToWebp

func ImgToWebp(filePath, dst string) error

图片转webp格式

func ImgToWebp2

func ImgToWebp2(filePath, dst string) error

TODO

func ImgToWebpWithOptions

func ImgToWebpWithOptions(filePath, dst string, quality int) error

图片带选项转webp格式,选项目前支持质量

func ToAV1ByLibaomav1

func ToAV1ByLibaomav1(filePath, dst string) error

func ToH265ByXlib265

func ToH265ByXlib265(filePath, dst string) error

func TransferFormat

func TransferFormat(filePath, dst string) error

func TransferFormatGPU

func TransferFormatGPU(filePath, dst string) error

Types

type Frame

type Frame int

const (
	I Frame = iota
	P
	B
)

func (Frame) String

func (f Frame) String() string