goav

package module
Version: v0.1.0 Latest Latest
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Published: Apr 7, 2019 License: MIT Imports: 0 Imported by: 0

README

goav

Golang binding for FFmpeg

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

Reviving this project -- if you like to contribute, please email me habtom@giorgis.io

GoDoc

Usage


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

func main() {

	filename := "/home/giorgis/media/sample.mp4"

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

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

	// Retrieve stream information
	if ctxtFormat.AvformatFindStreamInfo(nil) < 0 {
		log.Println("Error: Couldn't find stream information.")
		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] (https://github.com/FFmpeg/FFmpeg/blob/master/INSTALL.md)

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
  • Review included/excluded functions from each library
  • Go Tests
  • Possible restructuring packages
  • Tutorial01.c
  • More Tutorial

License

This library is under the MIT License

Documentation

Overview

Package goav contains golang binding for FFmpeg.

A comprehensive binding to the ffmpeg video/audio manipulation library: https://www.ffmpeg.org/

Contains:

libavcodec: encoding/decoding library
libavfilter: graph-based frame editing library
libavformat: I/O and muxing/demuxing library
libavdevice: special devices muxing/demuxing library
libavutil: common utility library
libswresample: audio resampling, format conversion and mixing
libpostproc: post processing library
libswscale: color conversion and scaling library

Source Files

Directories

Path Synopsis
Package avcodec contains the codecs (decoders and encoders) provided by the libavcodec library Provides some generic global options, which can be set on all the encoders and decoders.
Package avcodec contains the codecs (decoders and encoders) provided by the libavcodec library Provides some generic global options, which can be set on all the encoders and decoders.
Package avdevice deals with the input and output devices provided by the libavdevice library The libavdevice library provides the same interface as libavformat.
Package avdevice deals with the input and output devices provided by the libavdevice library The libavdevice library provides the same interface as libavformat.
Package avfilter contains methods that deal with ffmpeg filters filters in the same linear chain are separated by commas, and distinct linear chains of filters are separated by semicolons.
Package avfilter contains methods that deal with ffmpeg filters filters in the same linear chain are separated by commas, and distinct linear chains of filters are separated by semicolons.
Package avformat provides some generic global options, which can be set on all the muxers and demuxers.
Package avformat provides some generic global options, which can be set on all the muxers and demuxers.
Package avutil is a utility library to aid portable multimedia programming.
Package avutil is a utility library to aid portable multimedia programming.
Package swresample provides a high-level interface to the libswresample library audio resampling utilities The process of changing the sampling rate of a discrete signal to obtain a new discrete representation of the underlying continuous signal.
Package swresample provides a high-level interface to the libswresample library audio resampling utilities The process of changing the sampling rate of a discrete signal to obtain a new discrete representation of the underlying continuous signal.
Package swscale performs highly optimized image scaling and colorspace and pixel format conversion operations.
Package swscale performs highly optimized image scaling and colorspace and pixel format conversion operations.

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