java利用ffmpeg合并多个视频文件
1.首先要用到ffmpeg，可自行下载，本人用的是这个：https://pan.baidu.com/s/1_eauFOaO7rx9zSzGkEQ-3w
提取码：6sg3
复制这段内容后打开百度网盘手机App，操作更方便哦
2.先把视频转成 ts文件
3.再把ts文件合并
//工具类
/**
** 参数：
* **List<String> fromVideoFileList 需要合并的多视频url地址以List存放**
* **String ffmpeg 此处是ffmpeg 配置地址，可写死如“E:/ffmpeg/bin/ffmpeg.exe”**
* **String NewfilePath 合并后的视频存放地址，如：E:/mergevideo.mp4***
*/
public class ZipCompressor {
public static void convetor(List<String> fromVideoFileList, String ffmpeg,
String NewfilePath) throws IOException {
new Thread(
() -> {
try {
List<String> voidTS = new ArrayList<>();
Process process = null;
ProcessBuilder builder = null;
List<String> command = null;
for (int i = 0; i < fromVideoFileList.size(); i++) {
String fromVideoFile = fromVideoFileList.get(i);
command = new ArrayList<String>();
command.add(ffmpeg);
command.add("-y");
command.add("-i");
command.add(fromVideoFile);
command.add("-vcodec");
command.add("copy");
command.add("-bsf:v");
command.add("h264_mp4toannexb");
command.add("-f");
command.add("mpegts");
command.add(fromVideoFile.substring(0,
fromVideoFile.lastIndexOf(".")) + ".ts");
builder = new ProcessBuilder(command);
voidTS.add(fromVideoFile.substring(0,
fromVideoFile.lastIndexOf("."))
+ ".ts");
try {
process = builder.start();
InputStream errorStream = process
.getErrorStream();
InputStreamReader inputStreamReader = new InputStreamReader(
errorStream);
BufferedReader br = new BufferedReader(
inputStreamReader);
String line = "";
StringBuffer sb = new StringBuffer();
while ((line = br.readLine()) != null) {
sb.append(line);
}
String regexDuration = "Duration: (.*?), start: (.*?), bitrate: (\\d*) kb\\/s";
Pattern pattern = Pattern
.compile(regexDuration);
Matcher m = pattern.matcher(sb.toString());
System.out.println(sb.toString());
br.close();
inputStreamReader.close();
errorStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
List<String> dos = new ArrayList<>();
StringBuffer tsPath = new StringBuffer();
tsPath.append(ffmpeg);
tsPath.append(" -i ");
tsPath.append("concat:");
for (int t = 0; t < voidTS.size(); t++) {
if (t != voidTS.size() - 1) {
tsPath.append(voidTS.get(t) + "|");
} else {
tsPath.append(voidTS.get(t));
}
}
tsPath.append(" -vcodec ");
tsPath.append(" copy ");
tsPath.append(" -bsf:a ");
tsPath.append(" aac_adtstoasc ");
tsPath.append(" -movflags ");
tsPath.append(" +faststart ");
tsPath.append(NewfilePath);
Process pr = Runtime.getRuntime().exec(
tsPath.toString());
process.getInputStream();
pr.getOutputStream().close();
pr.getInputStream().close();
pr.getErrorStream().close();
try {
pr.waitFor();
Thread.sleep(1000);
pr.destroy();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//删除生成的ts文件
for (String filePath : voidTS) {
File file = new File(filePath);
file.delete();
pr.destroy();
}
} catch (Exception e) {
e.printStackTrace();
}
}).start();
}
}
//测试类
public class test {
public static void main(String[] args) throws IOException {
String ffmpeg="E:/ffmpeg/bin/ffmpeg.exe";
String NewfilePath = "E:/mergevideo.mp4";
fromVideoFileList.add("E:/video/cg2.mp4");
fromVideoFileList.add("E:/video/cg1.mp4");
ZipCompressor.convetor(fromVideoFileList, ffmpeg,NewfilePath );
}
}
来源：oschina
链接：https://my.oschina.net/u/4271269/blog/4715587