ALL
This commit is contained in:
263
main.go
Normal file
263
main.go
Normal file
@@ -0,0 +1,263 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"io"
|
||||
"net/http"
|
||||
"os"
|
||||
"strings"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"github.com/schollz/progressbar/v3"
|
||||
)
|
||||
|
||||
type M3u8Res struct {
|
||||
IsMaster bool
|
||||
NextUrl string
|
||||
TsFile []string
|
||||
}
|
||||
|
||||
// 创建一个连接池
|
||||
var httpClient = &http.Client{
|
||||
Transport: &http.Transport{
|
||||
MaxIdleConnsPerHost: 5,
|
||||
},
|
||||
}
|
||||
|
||||
// 获取输入的m3u8链接
|
||||
func getM3u8Path() (path string) {
|
||||
for {
|
||||
fmt.Println("请输入m3u8链接地址:")
|
||||
_, err := fmt.Scanln(&path)
|
||||
if err != nil {
|
||||
if err.Error() == "unexpected newline" {
|
||||
fmt.Println("你啥也没输入")
|
||||
continue
|
||||
}
|
||||
fmt.Println(err)
|
||||
continue
|
||||
}
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// Get链接
|
||||
func fetchM3u8Content(path string) string {
|
||||
res, err := httpClient.Get(path)
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return ""
|
||||
}
|
||||
defer res.Body.Close()
|
||||
if res.StatusCode != 200 {
|
||||
fmt.Println("出了点问题", res.StatusCode)
|
||||
return ""
|
||||
}
|
||||
body, err := io.ReadAll(res.Body)
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return ""
|
||||
}
|
||||
return string(body)
|
||||
}
|
||||
|
||||
func parseM3u8(content string, baseUrl string) M3u8Res {
|
||||
lines := strings.Split(content, "\n")
|
||||
// 优先级最高：检查是否包含 Master 标签
|
||||
for i, line := range lines {
|
||||
if strings.Contains(line, "#EXT-X-STREAM-INF") {
|
||||
return parseMainContent(lines, i, baseUrl)
|
||||
}
|
||||
}
|
||||
return M3u8Res{
|
||||
IsMaster: false,
|
||||
TsFile: parseSubContent(lines),
|
||||
}
|
||||
}
|
||||
|
||||
func parseMainContent(lines []string, index int, baseUrl string) M3u8Res {
|
||||
// 取匹配标签的下一行作为 URL
|
||||
if index+1 < len(lines) {
|
||||
nextUrl := strings.TrimSpace(lines[index+1])
|
||||
return M3u8Res{
|
||||
IsMaster: true,
|
||||
NextUrl: baseUrl + nextUrl,
|
||||
}
|
||||
}
|
||||
return M3u8Res{IsMaster: false}
|
||||
}
|
||||
|
||||
func parseSubContent(lines []string) []string {
|
||||
var tsFiles []string
|
||||
for _, line := range lines {
|
||||
line = strings.TrimSpace(line)
|
||||
if strings.HasPrefix(line, "#") || line == "" {
|
||||
continue
|
||||
}
|
||||
if strings.HasSuffix(line, ".jpeg") || strings.HasSuffix(line, ".ts") {
|
||||
tsFiles = append(tsFiles, line)
|
||||
}
|
||||
}
|
||||
return tsFiles
|
||||
}
|
||||
|
||||
// 提取基础路径
|
||||
func getBaseUrl(path string) string {
|
||||
lastSlash := strings.LastIndex(path, "/")
|
||||
if lastSlash == -1 {
|
||||
return path + "/"
|
||||
}
|
||||
return path[:lastSlash+1]
|
||||
}
|
||||
|
||||
//func getNewBaseUrl(path string) string {
|
||||
// lastSlash := strings.LastIndex(path, "/")
|
||||
// if lastSlash == -1 {
|
||||
// return path + "/"
|
||||
// }
|
||||
// subPath := path[:lastSlash]
|
||||
// secondLastSlash := strings.LastIndex(subPath, "/")
|
||||
// return path[:secondLastSlash+1]
|
||||
//}
|
||||
|
||||
// 拼接下载地址
|
||||
func buildUrl(baseUrl string, m3u8TsFile []string) []string {
|
||||
var downLoadUrl []string
|
||||
for _, tsUrl := range m3u8TsFile {
|
||||
fullUrl := baseUrl + tsUrl
|
||||
downLoadUrl = append(downLoadUrl, fullUrl)
|
||||
}
|
||||
return downLoadUrl
|
||||
}
|
||||
|
||||
// 协程用 index int 是用来标识每个文件的序号，在并发下载中特别重要
|
||||
func downLoadOne(Url string, index int) error {
|
||||
maxRetry := 3 // 定义最大重试次数
|
||||
baseDelay := time.Second
|
||||
for retry := 0; retry < maxRetry; retry++ {
|
||||
if retry > 0 {
|
||||
waitTime := baseDelay * time.Duration(1<<uint(retry-1)) // 1s, 2s, 4s
|
||||
fmt.Printf("[%3d] 第 %d 次重试，等待 %v...\n", index, retry, waitTime)
|
||||
time.Sleep(waitTime)
|
||||
}
|
||||
resp, err := httpClient.Get(Url)
|
||||
if err != nil {
|
||||
fmt.Printf("连接失败: %v\n", err)
|
||||
if retry < maxRetry-1 {
|
||||
continue // 重试
|
||||
}
|
||||
return fmt.Errorf("（%d）连接失败 %d次后: %v", index, maxRetry, err)
|
||||
}
|
||||
if resp.StatusCode != 200 {
|
||||
resp.Body.Close()
|
||||
if retry < maxRetry-1 {
|
||||
continue // 重试
|
||||
}
|
||||
return fmt.Errorf("服务器状态异常: %d", resp.StatusCode)
|
||||
}
|
||||
fileName := fmt.Sprintf("%d", index)
|
||||
file, err := os.Create(fileName)
|
||||
if err != nil {
|
||||
resp.Body.Close()
|
||||
return err
|
||||
}
|
||||
|
||||
_, err = io.Copy(file, resp.Body)
|
||||
closeErr := file.Close()
|
||||
resp.Body.Close()
|
||||
if err != nil || closeErr != nil {
|
||||
os.Remove(fileName)
|
||||
if err != nil {
|
||||
if retry < maxRetry-1 {
|
||||
continue // 重试
|
||||
}
|
||||
return fmt.Errorf("下载中断: %v %v", err, index)
|
||||
}
|
||||
return fmt.Errorf("文件关闭失败: %v", closeErr)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// 并行下载函数
|
||||
func downLoadALL(fullUrl []string, maxConcurrent int) {
|
||||
var wait sync.WaitGroup
|
||||
total := len(fullUrl)
|
||||
bar := progressbar.Default(int64(total), "正在下载(%d)")
|
||||
maxT := make(chan struct{}, maxConcurrent) //定义一个长度为maxConcurrent的信道
|
||||
wait.Add(len(fullUrl))
|
||||
for i := range fullUrl {
|
||||
maxT <- struct{}{} // 写入一个信号
|
||||
go func(url string, index int) {
|
||||
defer func() {
|
||||
<-maxT
|
||||
bar.Add(1)
|
||||
}()
|
||||
defer wait.Done()
|
||||
err := downLoadOne(url, index)
|
||||
if err != nil {
|
||||
fmt.Printf("文件 %d 失败: %v ", index, err)
|
||||
}
|
||||
}(fullUrl[i], i)
|
||||
}
|
||||
wait.Wait()
|
||||
bar.Finish()
|
||||
}
|
||||
|
||||
// 碎片拼接
|
||||
func videoBuild(num int, outputpath string, deleteAfter bool) error {
|
||||
output, err := os.Create(outputpath)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer output.Close()
|
||||
|
||||
for i := 0; i < num; i++ {
|
||||
fileName := fmt.Sprintf("%d", i)
|
||||
input, err := os.Open(fileName)
|
||||
if err != nil {
|
||||
return fmt.Errorf("打开文件失败\n")
|
||||
}
|
||||
writtenBytes, err := io.Copy(output, input)
|
||||
input.Close()
|
||||
if err != nil {
|
||||
return fmt.Errorf("合并文件失败\n")
|
||||
}
|
||||
if deleteAfter {
|
||||
os.Remove(fileName)
|
||||
}
|
||||
fmt.Printf("合并成功,%d\n", writtenBytes)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func main() {
|
||||
m3u8Path := getM3u8Path() // 输入链接
|
||||
m3u8Body := fetchM3u8Content(m3u8Path) // get到链接文件
|
||||
m3u8BaseUrl := getBaseUrl(m3u8Path) // 获取基础路径
|
||||
m3u8TsFile := parseM3u8(m3u8Body, m3u8BaseUrl)
|
||||
if m3u8TsFile.IsMaster {
|
||||
fmt.Println("检测到主播放列表，准备跳转:", m3u8TsFile.NextUrl)
|
||||
baseNew := getBaseUrl(m3u8TsFile.NextUrl) // 新的基础路径
|
||||
m3u8Body = fetchM3u8Content(m3u8TsFile.NextUrl) // get新的内容
|
||||
m3u8TsFileNew := parseM3u8(m3u8Body, baseNew)
|
||||
fullUrl := buildUrl(baseNew, m3u8TsFileNew.TsFile)
|
||||
downLoadALL(fullUrl, 10)
|
||||
fmt.Printf("下载完成？开始合并...\n")
|
||||
videoBuild(len(m3u8TsFileNew.TsFile), "test.mp4", true)
|
||||
} else {
|
||||
fmt.Println("获得分片列表，准备下载:", len(m3u8TsFile.TsFile), "个文件")
|
||||
fullUrl := buildUrl(m3u8BaseUrl, m3u8TsFile.TsFile)
|
||||
downLoadALL(fullUrl, 10)
|
||||
fmt.Printf("下载完成？开始合并...\n")
|
||||
videoBuild(len(m3u8TsFile.TsFile), "test.mp4", true)
|
||||
}
|
||||
}
|
||||
|
||||
//http://devimages.apple.com/iphone/samples/bipbop/gear1/prog_index.m3u8
|
||||
//https://test-streams.mux.dev/x36xhzz/x36xhzz.m3u8
|
||||
//https://test-streams.mux.dev/x36xhzz/url_0/193039199_mp4_h264_aac_hd_7.m3u8
|
||||
//https://surrit.com/0831edf7-98aa-49ff-a865-42777726e282/720p/video.m3u8
|
||||
Reference in New Issue
Block a user