Skip to content

Instantly share code, notes, and snippets.

@tpanum
Created July 20, 2014 19:49
Show Gist options
  • Save tpanum/374ca0a415a5d94ffcd9 to your computer and use it in GitHub Desktop.
Save tpanum/374ca0a415a5d94ffcd9 to your computer and use it in GitHub Desktop.
package main
import (
"io"
"log"
"os"
"os/exec"
"io/ioutil"
"bytes"
)
func main() {
fi, _ := ioutil.ReadFile("noir.aif")
runFFMPEGFromStdin(populateStdin(fi))
}
func populateStdin(file []byte) func(io.WriteCloser) {
return func(stdin io.WriteCloser) {
defer stdin.Close()
io.Copy(stdin, bytes.NewReader(file))
}
}
func runFFMPEGFromStdin(populate_stdin_func func(io.WriteCloser)) {
cmd := exec.Command("ffmpeg","-i","pipe:0","-ab","128k","-f","mp3","pipe:1")
stdin, err := cmd.StdinPipe()
if err != nil {
log.Panic(err)
}
stdout, err := cmd.StdoutPipe()
if err != nil {
log.Panic(err)
}
err = cmd.Start()
if err != nil {
log.Panic(err)
}
populate_stdin_func(stdin)
fo, _ := os.Create("output.mp3")
io.Copy(fo, stdout)
err = cmd.Wait()
if err != nil {
log.Panic(err)
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment