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Programming language: Go
Tags: Video    
Latest version: v0.1.0

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README

goav

Golang binding for FFmpeg

A comprehensive binding to the ffmpeg video/audio manipulation library.

GoDoc

Usage


import "github.com/giorgisio/goav/avformat"

func main() {

    filename := "sample.mp4"

    // Register all formats and codecs
    avformat.AvRegisterAll()

    ctx := avformat.AvformatAllocContext()

    // Open video file
    if avformat.AvformatOpenInput(&ctx, filename, nil, nil) != 0 {
        log.Println("Error: Couldn't open file.")
        return
    }

    // Retrieve stream information
    if ctx.AvformatFindStreamInfo(nil) < 0 {
        log.Println("Error: Couldn't find stream information.")

        // Close input file and free context
        ctx.AvformatCloseInput()
        return
    }

    //...

}

Libraries

  • avcodec corresponds to the ffmpeg library: libavcodec [provides implementation of a wider range of codecs]
  • avformat corresponds to the ffmpeg library: libavformat [implements streaming protocols, container formats and basic I/O access]
  • avutil corresponds to the ffmpeg library: libavutil [includes hashers, decompressors and miscellaneous utility functions]
  • avfilter corresponds to the ffmpeg library: libavfilter [provides a mean to alter decoded Audio and Video through chain of filters]
  • avdevice corresponds to the ffmpeg library: libavdevice [provides an abstraction to access capture and playback devices]
  • swresample corresponds to the ffmpeg library: libswresample [implements audio mixing and resampling routines]
  • swscale corresponds to the ffmpeg library: libswscale [implements color conversion and scaling routines]

Installation

FFMPEG INSTALL INSTRUCTIONS

sudo apt-get -y install autoconf automake build-essential libass-dev libfreetype6-dev libsdl1.2-dev libtheora-dev libtool libva-dev libvdpau-dev libvorbis-dev libxcb1-dev libxcb-shm0-dev libxcb-xfixes0-dev pkg-config texi2html zlib1g-dev

sudo apt install -y libavdevice-dev libavfilter-dev libswscale-dev libavcodec-dev libavformat-dev libswresample-dev libavutil-dev

sudo apt-get install yasm

export FFMPEG_ROOT=$HOME/ffmpeg
export CGO_LDFLAGS="-L$FFMPEG_ROOT/lib/ -lavcodec -lavformat -lavutil -lswscale -lswresample -lavdevice -lavfilter"
export CGO_CFLAGS="-I$FFMPEG_ROOT/include"
export LD_LIBRARY_PATH=$HOME/ffmpeg/lib
go get github.com/giorgisio/goav

More Examples

Coding examples are available in the examples/ directory.

Note

  • Function names in Go are consistent with that of the libraries to help with easy search
  • cgo: Extending Go with C
  • goav comes with absolutely no warranty.

Contribute

  • Fork this repo and create your own feature branch.
  • Follow standard Go conventions
  • Test your code.
  • Create pull request

TODO

  • [ ] Returning Errors
  • [ ] Garbage Collection
  • [X] Review included/excluded functions from each library
  • [ ] Go Tests
  • [ ] Possible restructuring packages
  • [x] Tutorial01.c
  • [ ] More Tutorial

License

This library is under the MIT License


*Note that all licence references and agreements mentioned in the goav README section above are relevant to that project's source code only.