goav
Golang binding for FFmpeg
A comprehensive binding to the ffmpeg video/audio manipulation library.
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
avcodeccorresponds to the ffmpeg library: libavcodec [provides implementation of a wider range of codecs]avformatcorresponds to the ffmpeg library: libavformat [implements streaming protocols, container formats and basic I/O access]avutilcorresponds to the ffmpeg library: libavutil [includes hashers, decompressors and miscellaneous utility functions]avfiltercorresponds to the ffmpeg library: libavfilter [provides a mean to alter decoded Audio and Video through chain of filters]avdevicecorresponds to the ffmpeg library: libavdevice [provides an abstraction to access capture and playback devices]swresamplecorresponds to the ffmpeg library: libswresample [implements audio mixing and resampling routines]swscalecorresponds to the ffmpeg library: libswscale [implements color conversion and scaling routines]
Installation
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
![[AvFormat] Initial implementation for Dictionary, Stream added GetRot…](https://avatars.githubusercontent.com/u/572096?v=4)
