"Ffmepg learning portal" Seven ffmepg multiple videos into one video

1. Prepare

  

ffmpeg

Link: https: //pan.baidu.com/s/1oh_36qFxnLW5Kmdf8F5eTQ 
extraction code: rsdn 
copy the contents of this open Baidu network disk phone App, the operation more convenient oh

 

Preparation 3 video

test.txt

file '20190516150254.mp4'
file '20190516151754.mp4'
file '20190516153254.mp4'

2. Code 

package com.qihui.qxj.services.system;

import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

import org.junit.Test;

public class Test1 {
	
	/**
	 * 把多个视频合成一个视频
	 */
	@Test
	public void test4(){
		try {
			List commend = new ArrayList();
			commend.add("c:/bin/ffmpeg.exe");
			commend.add("-loglevel");
			commend.add("8");
			commend.add("-y");
			commend.add("-f");
			commend.add("concat");
			commend.add("-safe");
			commend.add("0");
			commend.add("-i");
			commend.add("D:/project/direct/40/test.txt");
			commend.add("-c");
			commend.add("copy");
			commend.add("-y");
			commend.add("d:/out.mp4");
			start(commend);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
	private void start(List commend) {
		Process p = null;
		try {
			ProcessBuilder builder = new ProcessBuilder(commend);
			builder.command(commend);
			p = builder.start();
			p.getOutputStream().close();
			doWaitFor(p);
			p.destroy();
		} catch (Exception e) {
			PrintCatchErrorMsg.Print(e, "Part", "getRSTPPicture.catch", "Exception");
			p.destroy();
		}
	}
	
   
   public static int doWaitFor(Process p) {
	      InputStream in = null;
	      InputStream err = null;
	      int exitValue = -1;

	      try {
	         in = p.getInputStream();
	         err = p.getErrorStream();
	         boolean finished = false;

	         while(!finished) {
	            try {
	               Character c;
	               while(in.available() > 0) {
	                  c = new Character((char)in.read());
	                  System.out.print(c);
	               }

	               while(err.available() > 0) {
	                  c = new Character((char)err.read());
	                  System.out.print(c);
	               }

	               exitValue = p.exitValue();
	               finished = true;
	            } catch (IllegalThreadStateException var19) {
	               Thread.currentThread();
	               Thread.sleep(500L);
	            }
	         }
	      } catch (Exception var20) {
	      } finally {
	         try {
	            if (in != null) {
	               in.close();
	            }
	         } catch (IOException var18) {
	         }

	         if (err != null) {
	            try {
	               err.close();
	            } catch (IOException var17) {
	            }
	         }

	      }

	      return exitValue;
	   }
}

c: /bin/ffmpeg.exe is ffmepg installation address

3 Notes

Input files must be ordered, text.txt written to the file in
the input file format is preferably the same, preferably the same resolution size

Resolution is not the same size, with the player to play no problem is found to be played on pc micro-channel, to the second video playback fast time point when the micro-channel flash back. The mobile phone video playback is no problem, if there is a friend to solve this problem, you can leave comments below.

 

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