package com.ard.sample.utils;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Component;
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import java.io.BufferedReader;
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import java.io.InputStreamReader;
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import java.math.BigDecimal;
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import java.math.RoundingMode;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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/**
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* 视频时长解析工具类（FFmpeg 命令行版）
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* 无需下载文件，直接解析远程 HTTPS 地址的 MP4 视频时长
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*/
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@Component
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public class VideoDurationUtilFFmpeg {
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private static final Pattern DURATION_PATTERN = Pattern.compile("Duration: (\\d{2}):(\\d{2}):(\\d{2}\\.\\d{2})");
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/**
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* 获取远程 HTTPS 地址的 MP4 视频时长
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* @param videoHttpsUrl 视频 HTTPS 地址
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* @return 视频时长（秒，保留2位小数），解析失败返回 null
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*/
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public double getRemoteMp4Duration(String videoHttpsUrl) {
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// 入参校验
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if (videoHttpsUrl == null || !videoHttpsUrl.trim().toLowerCase().startsWith("https")
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|| !videoHttpsUrl.trim().toLowerCase().endsWith(".mp4")) {
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throw new IllegalArgumentException("无效的MP4视频HTTPS地址：" + videoHttpsUrl);
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}
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try {
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// 构建 FFmpeg 命令，直接解析远程 URL
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String[] command = {
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"ffmpeg",
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"-i", videoHttpsUrl,
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"-hide_banner"
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};
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Process process = new ProcessBuilder(command)
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.redirectErrorStream(true)
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.start();
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BufferedReader reader = new BufferedReader(
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new InputStreamReader(process.getInputStream())
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);
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String line;
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while ((line = reader.readLine()) != null) {
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Matcher matcher = DURATION_PATTERN.matcher(line);
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if (matcher.find()) {
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int hours = Integer.parseInt(matcher.group(1));
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int minutes = Integer.parseInt(matcher.group(2));
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double seconds = Double.parseDouble(matcher.group(3));
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double totalSeconds = hours * 3600 + minutes * 60 + seconds;
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return totalSeconds;
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// return new BigDecimal(totalSeconds)
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// .setScale(2, RoundingMode.HALF_UP);
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}
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}
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// 等待进程结束
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process.waitFor();
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if (process.exitValue() != 0) {
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throw new RuntimeException("FFmpeg 执行失败，退出码：" + process.exitValue());
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}
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} catch (Exception e) {
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System.err.println("解析视频时长失败，URL：" + videoHttpsUrl + "，异常：" + e.getMessage());
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}
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return -1;
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}
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// // 测试方法（可删除）
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// public static void main(String[] args) {
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// VideoDurationUtilFFmpeg util = new VideoDurationUtilFFmpeg();
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//
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// TimestampUtils _timestampUtils = new TimestampUtils();
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// // 替换为你的测试视频 URL
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// double duration = util.getRemoteMp4Duration("https://192.168.1.3:9001/dockfile/wayline/d16eb96c-a0cc-458f-852c-09dddd59827f/DJI_202602121540_002_d16eb96c-a0cc-458f-852c-09dddd59827f/DJI_20260212154239_0004_V.mp4");
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// long endTime=_timestampUtils.plusSecondsByMillis(System.currentTimeMillis(),duration);
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// if (duration != -1) {
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// System.out.println("视频时长：" + duration + " 秒");
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// System.out.println("视频结束时间：" + endTime);
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// } else {
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// System.out.println("解析失败");
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// }
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// }
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}
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