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最近一直在处理视频文件，然后经常会要截图、抽帧、对视频文件进行抽取音频，对wav转换成mp3等操作，使用的是ffmpeg的一个工具类，目前只有几个方面的，以后需要新的用途会更新此工具类，希望这个工具类可以帮助到一些需要的小伙伴，可以直接拿去用，代码如下：
public class FfmpegUtil {
//ffmpeg安装目录
public static String FFMPEG_PATH ="D:\\\\ffmpeg.exe";
// public static String FFMPEG_PATH =FfmpegUtil.class.getClassLoader().getResource("com/wal/utils/ffmpeg.exe").getFile();
//设置图片大小
private final static String IMG_SIZE = "1920x1080";
/**
* 视频截图方法（windows）
*/
public static boolean ffmpegToImage(String videoPath,String imagePath,int timePoint){
List<String> commands = new java.util.ArrayList<String>();
FFMPEG_PATH= FFMPEG_PATH.replace("%20", " ");
commands.add(FFMPEG_PATH);
commands.add("-ss");
commands.add(timePoint+"");//这个参数是设置截取视频多少秒时的画面
commands.add("-i");
commands.add(videoPath);
commands.add("-y");
commands.add("-f");
commands.add("image2");
commands.add("-t");
commands.add("0.001");
commands.add("-s");
commands.add(IMG_SIZE); //这个参数是设置截取图片的大小
commands.add(imagePath);
try {
ProcessBuilder builder = new ProcessBuilder();
builder.command(commands);
builder.start();
System.out.println("截取成功:"+imagePath);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* @Description 文件是否能被ffmpeg解析
*/
public static int checkFileType(String fileName) {
String type = fileName.substring(fileName.lastIndexOf(".") + 1, fileName.length())
.toLowerCase();
if (type.equals("avi")) {
return 0;
} else if (type.equals("mov")) {
return 0;
} else if (type.equals("mp4")) {
return 0;
} else if (type.equals("flv")) {
return 0;
}
else if (type.equals("png")) {
return 1;
} else if (type.equals("jpg")) {
return 1;
} else if (type.equals("jpeg")) {
return 1;
}
return 9;
}
/**
* @Description 获取视频时长
*/
static int getVideoTime(String video_path) {
List<String> commands = new java.util.ArrayList<String>();
commands.add(FFMPEG_PATH);
commands.add("-i");
commands.add(video_path);
try {
ProcessBuilder builder = new ProcessBuilder();
builder.command(commands);
final Process p = builder.start();
//从输入流中读取视频信息
BufferedReader br = new BufferedReader(new InputStreamReader(p.getErrorStream()));
StringBuffer sb = new StringBuffer();
String line = "";
while ((line = br.readLine()) != null) {
sb.append(line);
}
br.close();
//从视频信息中解析时长
String regexDuration = "Duration: (.*?), start: (.*?), bitrate: (\\d*) kb\\/s";
Pattern pattern = Pattern.compile(regexDuration);
Matcher m = pattern.matcher(sb.toString());
if (m.find()) {
int time = getTimelen(m.group(1));
System.out.println(video_path+",视频时长："+time+", 开始时间："+m.group(2)+",比特率："+m.group(3)+"kb/s");
return time;
}
} catch (Exception e) {
e.printStackTrace();
}
return 0;
}
//格式:"00:00:10.68"
private static int getTimelen(String timelen){
int min=0;
String strs[] = timelen.split(":");
if (strs[0].compareTo("0") > 0) {
min+=Integer.valueOf(strs[0])*60*60;//秒
}
if(strs[1].compareTo("0")>0){
min+=Integer.valueOf(strs[1])*60;
}
if(strs[2].compareTo("0")>0){
min+=Math.round(Float.valueOf(strs[2]));
}
return min;
}
/**
* 秒转化成 hh:mm:ss
* @param duration
* @return
*/
public static String convertInt2Date(long duration){
Calendar cal = Calendar.getInstance();
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");
return formatter.format(cal.getTimeInMillis() + duration * 1000);
}
/**
* 视频抽取音频文件
* @param videoPath
* @param type
* @param audioPath
* @return
*/
public static boolean ffmpegToAudio(String videoPath,String type, String audioPath){
List<String> commands = new java.util.ArrayList<String>();
FFMPEG_PATH= FFMPEG_PATH.replace("%20", " ");
commands.add(FFMPEG_PATH);
commands.add("-i");
commands.add(videoPath);
commands.add("-f");
commands.add(type);
commands.add("-vn");
commands.add("-y");
commands.add("-acodec");
if("wav".equals(type)){
commands.add("pcm_s16le");
}else if("mp3".equals(type)){
commands.add("mp3");
}
commands.add("-ar");
commands.add("16000");
commands.add("-ac");
commands.add("1");
commands.add(audioPath);
try {
ProcessBuilder builder = new ProcessBuilder();
builder.command(commands);
Process p = builder.start();
System.out.println("抽离成功:"+audioPath);
// 1. start
BufferedReader buf = null; // 保存ffmpeg的输出结果流
String line = null;
buf = new BufferedReader(new InputStreamReader(p.getInputStream()));
StringBuffer sb = new StringBuffer();
while ((line = buf.readLine()) != null) {
System.out.println(line);
sb.append(line);
continue;
}
p.waitFor();// 这里线程阻塞，将等待外部转换进程运行成功运行结束后，才往下执行
// 1. end
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* wav 转 mp3
* @param wavPath
* @param mp3Path
* @return
*/
//wav转mp3命令：ffmpeg -i test.wav -f mp3 -acodec libmp3lame -y wav2mp3.mp3
public static boolean ffmpegOfwavTomp3(String wavPath, String mp3Path){
List<String> commands = new java.util.ArrayList<String>();
FFMPEG_PATH= FFMPEG_PATH.replace("%20", " ");
commands.add(FFMPEG_PATH);
commands.add("-i");
commands.add(wavPath);
commands.add("-f");
commands.add("mp3");
commands.add("-acodec");
commands.add("libmp3lame");
commands.add("-y");
commands.add(mp3Path);
try {
ProcessBuilder builder = new ProcessBuilder();
builder.command(commands);
Process p = builder.start();
System.out.println("转换成功:"+mp3Path);
// 1. start
BufferedReader buf = null; // 保存ffmpeg的输出结果流
String line = null;
buf = new BufferedReader(new InputStreamReader(p.getInputStream()));
StringBuffer sb = new StringBuffer();
while ((line = buf.readLine()) != null) {
System.out.println(line);
sb.append(line);
continue;
}
p.waitFor();// 这里线程阻塞，将等待外部转换进程运行成功运行结束后，才往下执行
// 1. end
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
public static void main(String[] args) {
// // 视频文件
// String videoRealPath1 = "D:\\5.MOV";
// // 截图的路径（输出路径）
// String imageRealPath1 = "D:\\31.jpg";
// String imageRealPath2 = "D:\\32.jpg";
// if(checkFileType(videoRealPath1) ==0){
// ffmpegToImage(videoRealPath1,imageRealPath1,10);
// ffmpegToImage(videoRealPath1,imageRealPath2,11);
// }
// String videoRealPath = "D:\\5.MOV";
// String audioRealPath = "D:\\HHH\\5.wav";
// String audioType = "wav";
// ffmpegToAudio(videoRealPath,audioType,audioRealPath);
String wavPath = "D:\\HHH\\123.wav";
String mp3Path = "D:\\HHH\\123.mp3";
ffmpegOfwavTomp3(wavPath,mp3Path);
}
}
有不懂的地方可以给我留言，或者进群交流！
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