字幕格式化

复制import re

# SRT → VTT 格式转换
srt_text = """1
00:00:01,000 --> 00:00:04,000
Hello, world!

2
00:00:05,000 --> 00:00:08,000
This is a subtitle."""

def srt_to_vtt(srt):
    # 替换逗号为点（VTT 时间格式）
    vtt = srt.replace(',', '.')
    # 添加 VTT 文件头
    return 'WEBVTT\n\n' + vtt

vtt_text = srt_to_vtt(srt_text)
print(vtt_text)
# 输出：
# WEBVTT
#
# 1
# 00:00:01.000 --> 00:00:04.000
# Hello, world!
#
# 2
# 00:00:05.000 --> 00:00:08.000
# This is a subtitle.

复制package main

import (
	"fmt"
	"strings"
)

// VTT → SRT 格式转换
func vttToSrt(vtt string) string {
	// 移除 WEBVTT 头部
	srt := strings.Replace(vtt, "WEBVTT\n\n", "", 1)
	// 替换点为逗号（SRT 时间格式）
	srt = strings.ReplaceAll(srt, ".", ",")
	return srt
}

func main() {
	vttText := `WEBVTT

1
00:00:01.000 --> 00:00:04.000
Hello, world!

2
00:00:05.000 --> 00:00:08.000
This is a subtitle.`

	srtText := vttToSrt(vttText)
	fmt.Println(srtText)
	// 输出：
	// 1
	// 00:00:01,000 --> 00:00:04,000
	// Hello, world!
	//
	// 2
	// 00:00:05,000 --> 00:00:08,000
	// This is a subtitle.
}

复制// LRC → SRT 格式转换
const lrcText = `[00:01.00]Hello, world!
[00:05.00]This is a subtitle.`

function lrcToSrt(lrc) {
  const lines = lrc.split('\n')
  let srtLines = []
  let index = 1

  for (const line of lines) {
    const match = line.match(/\[(\d{2}):(\d{2})\.(\d{2})\]\s*(.*)/)
    if (!match) continue

    const [, min, sec, ms, text] = match
    // 将 LRC 时间格式转为 SRT 格式（假设每句持续 3 秒）
    const start = `${min}:${sec}:${ms},000`
    const endMin = String(Number(min) + (Number(sec) + 3 >= 60 ? 1 : 0)).padStart(2, '0')
    const endSec = String((Number(sec) + 3) % 60).padStart(2, '0')
    const end = `${endMin}:${endSec}:${ms},000`

    srtLines.push(`${index}\n${start} --> ${end}\n${text}`)
    index++
  }

  return srtLines.join('\n\n')
}

console.log(lrcToSrt(lrcText))
// 输出：
// 1
// 00:01:00,000 --> 00:01:03,000
// Hello, world!
//
// 2
// 00:05:00,000 --> 00:05:03,000
// This is a subtitle.