packagecom.aw.utils;importorg.apache.commons.lang3.StringUtils;import org.apache.oro.text.regex.*;importorg.slf4j.Logger;importorg.slf4j.LoggerFactory;importjava.io.BufferedReader;importjava.io.InputStreamReader;importjava.util.HashMap;importjava.util.List;importjava.util.Map;/***@authorhy

* @date 2019/11/7 14:05*/

public classFileParseUtil {public static final Logger LOGGER = LoggerFactory.getLogger(FileParseUtil.class);/*** 提取音频、视频编码等信息

*

*@paramfilePath

*@return

*/

public static MapgetEncodingFormat(String filePath) {

String processFLVResult=processFLV(filePath);

Map retMap= newHashMap();if(StringUtils.isNotBlank(processFLVResult)) {

PatternCompiler compiler= newPerl5Compiler();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= newPerl5Matcher();if(matcherDuration.contains(processFLVResult, patternDuration)) {

MatchResult re=matcherDuration.getMatch();

retMap.put("提取出播放时间", re.group(1));

retMap.put("开始时间", re.group(2));

retMap.put("bitrate 码率 单位 kb", re.group(3));

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= newPerl5Matcher();if(matcherVideo.contains(processFLVResult, patternVideo)) {

MatchResult re=matcherVideo.getMatch();

retMap.put("编码格式", re.group(1));

retMap.put("视频格式", re.group(2));

retMap.put("分辨率", re.group(3));

System.out.println("编码格式 ===" + 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= newPerl5Matcher();if(matcherAudio.contains(processFLVResult, patternAudio)) {

MatchResult re=matcherAudio.getMatch();

retMap.put("音频编码", re.group(1));

retMap.put("音频采样频率", re.group(2));

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();

}

}returnretMap;

}//ffmpeg能解析的格式：(asx，asf，mpg，wmv，3gp，mp4，mov，avi，flv等)

private staticString processFLV(String inputPath) {

List commend = new java.util.ArrayList();

commend.add("D:\\aisino\\ffmpeg-20191105-c54268c-win64-static\\bin\\ffmpeg");//可以设置环境变量从而省去这行

commend.add("ffmpeg");

commend.add("-i");

commend.add(inputPath);try{

ProcessBuilder builder= newProcessBuilder();

builder.command(commend);

builder.redirectErrorStream(true);

Process p=builder.start();//1. start

BufferedReader buf = null; //保存ffmpeg的输出结果流

String line = null;//read the standard output

buf= new BufferedReader(newInputStreamReader(p.getInputStream()));

StringBuffer sb= newStringBuffer();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//1. end

returnsb.toString();

}catch(Exception e) {

LOGGER.error("-- processFLV error, message is {}", e);return null;

}

}

}