ffmpeg

Documentation

Overview

Package ffmpeg provides process management and monitoring for ffmpeg.

Index

• type Args
• type FFMetadata
• type Process
  • func New() *Process
  • func (ffw *Process) Concatenate(ctx context.Context, inputFile []string, outputFile string) error
  • func (ffw *Process) Probe(ctx context.Context, filename string) (*FFMetadata, error)
  • func (ffw *Process) Run(ctx context.Context, args Args) error
  • func (ffw *Process) RunEx(ctx context.Context, relay ProgressRelay, args Args) error
  • func (ffw *Process) Truncate(ctx context.Context, inputFile string, outputFile string, startSecond float64, ...) error
• type ProgressRelay

Types

type Args

type Args struct {
	ConstantRateFactor         int
	EnableHardwareAcceleration bool
	EnableExperimentalCodecs   bool
	EnableFastStart            bool
	InputFile                  string
	OutputFile                 string
	ProgressAddress            string
	Preset                     string
}

Args hold arguments for ffmpeg executable. http://trac.ffmpeg.org/wiki/Encode/H.264 https://github.com/a-nagrani/ffmpeg-commands

type FFMetadata

type FFMetadata struct {
	Frames []map[string]string
	Format map[string]string
}

FFMetadata contains metadata for a media file.

type Process

type Process struct {
	// contains filtered or unexported fields
}

Process manages a ffmpeg process to perform some action.

func New

func New() *Process

New creates a new Process.

func (*Process) Concatenate

func (ffw *Process) Concatenate(ctx context.Context, inputFile []string, outputFile string) error

Concatenate a collection of media files into 1 file.

func (*Process) Probe

func (ffw *Process) Probe(ctx context.Context, filename string) (*FFMetadata, error)

Probe the information of the file.

func (*Process) Run

func (ffw *Process) Run(ctx context.Context, args Args) error

Run spawns an ffmpeg process to do perform video encoding. This method waits for the encoding to finish.

func (*Process) RunEx

func (ffw *Process) RunEx(ctx context.Context, relay ProgressRelay, args Args) error

RunEx spawns an ffmpeg process to do perform video encoding. This method waits for the encoding to finish.

func (*Process) Truncate

func (ffw *Process) Truncate(ctx context.Context, inputFile string, outputFile string, startSecond float64, durationSeconds float64) error

Truncate extracts a portion of the video file.

type ProgressRelay

type ProgressRelay interface {
	OnFfmpegComplete()
	OnFfmpegProgress(map[string]string)
}

ProgressRelay reports progress of the encoding process to any event sink.