1,自己去下载ffepeg工具包放在项目指定目录下
2,Ffmpeg工具类
public static String processflvcodetype(String ffmpegPath, String filePath) {
String resultmessage=null;
// String ffmpegPath = request.getSession().getServletContext().getRealPath(File.separator+"tools"+File.separator+"ffmpeg.exe");
// String result = MediaService.processFLV(ffmpegPath, "C:\\Users\\Administrator\\Desktop\\乱七八糟\\20200722171230-23281_2_video_0_0_student_far.mp4");
String result = MediaService.processFLV(ffmpegPath, filePath);
System.out.println("Ffmpeg:" + result);
PatternCompiler compiler = new Perl5Compiler();
try {
String regexDuration = "Duration: (.*?), start: (.*?), bitrate: (\\d*) kb\\/s";
String regexVideo = "Video: (.*?), (.*?), (.*?)[,\\s]";
String regexAudio = "Audio: (\\w*), (\\d*) Hz";
Pattern patternDuration = compiler.compile(regexDuration, Perl5Compiler.CASE_INSENSITIVE_MASK);
PatternMatcher matcherDuration = new Perl5Matcher();
if (matcherDuration.contains(result, patternDuration)) {
MatchResult re = matcherDuration.getMatch();
System.out.println("提取出播放时间 ===" + re.group(1));
System.out.println("开始时间 =====" + re.group(2));
System.out.println("bitrate 码率 单位 kb==" + re.group(3));
}
Pattern patternVideo = compiler.compile(regexVideo, Perl5Compiler.CASE_INSENSITIVE_MASK);
PatternMatcher matcherVideo = new Perl5Matcher();
if (matcherVideo.contains(result, patternVideo)) {
MatchResult re = matcherVideo.getMatch();
System.out.println("编码格式 ===" + re.group(1));
//编码格式
resultmessage=re.group(1);
System.out.println("视频格式 ===" + re.group(2));
System.out.println(" 分辨率 == =" + re.group(3));
}
Pattern patternAudio = compiler.compile(regexAudio, Perl5Compiler.CASE_INSENSITIVE_MASK);
PatternMatcher matcherAudio = new Perl5Matcher();
if (matcherAudio.contains(result, patternAudio)) {
MatchResult re = matcherAudio.getMatch();
System.out.println("音频编码 ===" + re.group(1));
System.out.println("音频采样频率 ===" + re.group(2));
}
} catch (MalformedPatternException e) {
e.printStackTrace();
}
return resultmessage;
}
// ffmpeg能解析的格式:(asx,asf,mpg,wmv,3gp,mp4,mov,avi,flv等)
public static String processFLV(String ffmpegPath,String inputPath) {
List<String> commend=new java.util.ArrayList<String>();
commend.add(ffmpegPath); // 添加转换工具路径
commend.add("-i");
commend.add(inputPath);
try {
ProcessBuilder builder = new ProcessBuilder();
builder.command(commend);
builder.redirectErrorStream(true);
Process p= builder.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;
}
int ret = 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
return sb.toString();
} catch (Exception e) {
return null;
}
}
3测试
public static void main(String[] args) {
String ffepegpath="F:\\workspace\\TestWork\\WebContent\\tools\\ffmpeg.exe";
String filepath="C:\\Users\\Administrator\\Desktop\\spreedmovie_1.mp4";
String processflvcodetype = MediaService.processflvcodetype(ffepegpath, filepath);
System.out.println(processflvcodetype);
}