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安装ffmpge查看该文

目的：

对文件夹的中的mp4获取时长

使用ffmpge获取视频详情，从中解析出 duration的信息

public class VadioTest {
	public void getVideoDuration(String path, StringBuffer bf)
			throws IOException, InterruptedException {
		File[] files = new File(path).listFiles();
	for (int i = 0; i < files.length; i++) {
		if (!files[i].isDirectory() && files[i].toString().endsWith(".mp4")) {
			List<String> commend = new ArrayList<String>();
			commend.add("ffmpeg");
			commend.add("-i");
			commend.add(files[i].getPath());
			ProcessBuilder builder = new ProcessBuilder(commend);
			builder.command(commend);
			builder.redirectErrorStream(true);

			// 进程信息输出到控制台
			Process p = builder.start();
			BufferedReader br = new BufferedReader(new InputStreamReader(
					p.getInputStream()));
			String line = null;
			while ((line = br.readLine()) != null) {
				// System.out.println(line);
				int durationIndex = line.indexOf("Duration:");
				if (durationIndex > -1) {
					System.out.println(line.substring(durationIndex + 10,
							durationIndex + 20));
					String time = line.substring(durationIndex + 10,
							durationIndex + 20);
					System.out.println(time.split("\\.")[0]);
					String[] timeArr = time.split("\\.")[0].split(":");
					int time2 = Integer.valueOf(timeArr[0]) * 60
							+ Integer.valueOf(timeArr[1]);
					System.out.println(time2);
					bf.append("update xx_table set duration = "
							+ time2 + " where vadio_url like %"
							+ files[i].getName() + "%;");
				}
			}
			p.waitFor();// 直到上面的命令执行完，才向下执行

		} else if (files[i].isDirectory()) {
			getVideoDuration(files[i].getPath(), bf);
		}
	}

}

public static void main(String[] args) {
	String filePath = "/Users/xx/Desktop/test";
	FileWriter fw = null;
	try {
		StringBuffer sf = new StringBuffer("");
		VadioTest videoDuration = new VadioTest();
		videoDuration.getVideoDuration(filePath, sf);
		File fileOut = new File(filePath + "/1.txt");
		System.out.println(sf);

		fw = new FileWriter(fileOut);
		fw.write(sf.toString());

		fw.flush();
	} catch (IOException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	} catch (InterruptedException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	}finally{
		if(fw != null){
			try {
				fw.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}
}

}