Golang with ffmpeg dynamic video Encode - file

Question

Am trying to encode the videos with Golang ffmpeg. Am not able to get the video file, it shows this error
invalid character '-' in numeric literal
Postman:
This is my code:
package main
import (
"encoding/json"
"fmt"
"net/http"
"github.com/gorilla/mux"
"github.com/xfrr/goffmpeg/transcoder"
)
type Encode struct {
Video string `json:"video"`
}
func encodeFfmpeg(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
fmt.Println("Encodeing Started")
var encode Encode
video := json.NewDecoder(r.Body).Decode(encode)
file, err := os.Open(video)
if err != nil {
log.Fatalln(err)
}
defer file.Close()
buf, err := ioutil.ReadAll(file)
if err != nil {
log.Fatalln(err)
}
cmd := exec.Command("ffmpeg",
"-i", "pipe:0", // take stdin as input
"-c:a", "libmp3lame", // use mp3 lame codec
"-f", "avi",
"pipe:1",
)
resultBuffer := bytes.NewBuffer(make([]byte, 5*1024*1024)) // pre allocate 5MiB buffer
cmd.Stderr = os.Stderr // bind log stream to stderr
cmd.Stdout = resultBuffer // stdout result will be written here
stdin, err := cmd.StdinPipe() // Open stdin pipe
if err != nil {
log.Fatalln(err)
}
err = cmd.Start() // Start a process on another goroutine
if err != nil {
log.Fatalln(err)
}
_, err = stdin.Write(buf) // pump audio data to stdin pipe
if err != nil {
log.Fatalln(err)
}
err = stdin.Close() // close the stdin, or ffmpeg will wait forever
if err != nil {
log.Fatalln(err)
}
err = cmd.Wait() // wait until ffmpeg finish
if err != nil {
log.Fatalln(err)
}
outputFile, err := os.Create(encodeFile) // create new file
if err != nil {
log.Fatalln(err)
}
defer outputFile.Close()
_, err = outputFile.Write(resultBuffer.Bytes()) // write result buffer to file
if err != nil {
log.Fatalln(err)
}
json.NewEncoder(w).Encode(map[string]interface{}{
"status": "success",
"statusCode": 200,
"data": "Successfully Encoded file",
})
}
func main() {
router := mux.NewRouter()
router.HandleFunc("/encode", encodeFfmpeg).Methods("POST")
//router.HandleFunc("/rtsp", rtsp).Methods("POST")
// config port
fmt.Printf("Starting server at 8080 \n")
http.ListenAndServe(":8080", router)
}
video.mp4 file not showing in request body. Please help me to solve this issue

Answer 1

json.NewDecoder(r.Body).Decode(encode) returns error not video and another thing is that you send your data in form so you can access file from form like:
file, header, err := r.FormFile("video")