avcodec

Documentation

Overview

avcodec is roughly a wrapper around FFmpeg's libavcodec library, which provides encoding, decoding and transcoding of audio and video streams.

Index

• func Codecs(t media.Type) []media.Metadata
• type Codec
  • func NewDecodingCodec(name string, opts ...Opt) (*Codec, error)
  • func NewEncodingCodec(name string, opts ...Opt) (*Codec, error)
  • func (ctx *Codec) Close() error
  • func (ctx *Codec) MarshalJSON() ([]byte, error)
  • func (ctx *Codec) Name() string
  • func (ctx *Codec) String() string
  • func (ctx *Codec) Type() media.Type
• type EncodingContext
• type Opt
  • func WithChannelLayout(v string) Opt
  • func WithFrameRate(num, den int) Opt
  • func WithFrameSize(v string) Opt
  • func WithOpt(key string, value any) Opt
  • func WithPixelFormat(v string) Opt
  • func WithSampleFormat(v string) Opt
  • func WithSampleRate(v int) Opt

Functions

func Codecs

func Codecs(t media.Type) []media.Metadata

Return all codecs. Codecs can be either encoders or decoders. The argument can be ANY or any combination of INPUT, OUTPUT, VIDEO, AUDIO and SUBTITLE, in order to return a subset of codecs.

Types

type Codec

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

func NewDecodingCodec

func NewDecodingCodec(name string, opts ...Opt) (*Codec, error)

NewDecodingCodec returns a decoder by name. Options for decoding can be passed. Call Close() to release the codec context. Codec options are listed at <https://ffmpeg.org/ffmpeg-codecs.html>

func NewEncodingCodec

func NewEncodingCodec(name string, opts ...Opt) (*Codec, error)

NewEncodingCodec returns an encoder by name. Options for encoding can be passed. Call Close() to release the codec. Codec options are listed at <https://ffmpeg.org/ffmpeg-codecs.html>

func (*Codec) Close

func (ctx *Codec) Close() error

Release the codec resources

func (*Codec) MarshalJSON

func (ctx *Codec) MarshalJSON() ([]byte, error)

func (*Codec) Name

func (ctx *Codec) Name() string

func (*Codec) String

func (ctx *Codec) String() string

func (*Codec) Type

func (ctx *Codec) Type() media.Type

type EncodingContext

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

type Opt

type Opt func(*opt) error

func WithChannelLayout

func WithChannelLayout(v string) Opt

func WithFrameRate

func WithFrameRate(num, den int) Opt

func WithFrameSize

func WithFrameSize(v string) Opt

func WithOpt

func WithOpt(key string, value any) Opt

func WithPixelFormat

func WithPixelFormat(v string) Opt

func WithSampleFormat

func WithSampleFormat(v string) Opt

func WithSampleRate

func WithSampleRate(v int) Opt