Golang与FFmpeg: 实现网络视频下载的技术实现

package main

import (
    "fmt"
    "net/http"
    "os"
    "os/exec"
)

func main() {
    // 视频URL地址
    videoURL := "http://example.com/video.mp4"
    
    // 创建一个http客户端
    client := http.Client{}
    
    // 发送GET请求
    resp, err := client.Get(videoURL)
    if err != nil {
        fmt.Println("Error while sending GET request:", err)
        return
    }
    defer resp.Body.Close()
    
    // 创建本地文件
    file, err := os.Create("video.mp4")
    if err != nil {
        fmt.Println("Error while creating file:", err)
        return
    }
    defer file.Close()
    
    // 将响应体写入文件
    _, err = io.Copy(file, resp.Body)
    if err != nil {
        fmt.Println("Error while writing to file:", err)
        return
    }
    
    // 使用FFmpeg进行转码
    cmd := exec.Command("ffmpeg", "-i", "video.mp4", "output.mp4")
    err = cmd.Run()
    if err != nil {
        fmt.Println("Error while running FFmpeg command:", err)
        return
    }
    
    fmt.Println("Video downloaded and processed successfully.")
}