java 转码%2f%_java实现视频转码

r囧r小猫 2022-12-31 10:21 184阅读 0赞

packagecom.gcsoft.pyas.sysbase.utils;importcom.gcsoft.pyas.AppProperties;importorg.slf4j.Logger;importorg.slf4j.LoggerFactory;importorg.springframework.beans.factory.annotation.Autowired;importorg.springframework.stereotype.Component;importjava.io.File;importjava.io.IOException;importjava.io.InputStream;importjava.util.ArrayList;importjava.util.List;importjava.util.UUID;/\*\*\* 视频转码工具类

\*@authorjwc\*/@Componentpublic classConverVideoUtils \{

@AutowiredprivateAppProperties appProperties;protected final Logger logger = LoggerFactory.getLogger(this.getClass());/\*\*\* 转换视频格式

\*@paramsourceVideoPath 视频地址

\*@return

\*/

publicString beginConver(String sourceVideoPath) \{//转码格式

String targetExtension =appProperties.getVideoFormat();//是否删除原文件

Boolean isDeleteResult =appProperties.getIsDeleteResult();

File fi= newFile(sourceVideoPath);

String fileName=fi.getName();//文件名不带扩展名

String fileRealName = fileName.substring(0, fileName.lastIndexOf("."));

logger.info("接收到文件(" + sourceVideoPath + ")需要转换");if (!checkfile(sourceVideoPath)) \{

logger.error(sourceVideoPath+ "文件不存在" + " ");return "";

\}long beginTime =System.currentTimeMillis();

logger.info("开始转文件(" + sourceVideoPath + ")");

String path=process(fileRealName, sourceVideoPath, targetExtension, isDeleteResult);if(StringUtil.isNotEmpty(path)) \{

logger.info("转换成功");long endTime =System.currentTimeMillis();long timeCha = (endTime -beginTime);

String totalTime=sumTime(timeCha);

logger.info("转换视频格式共用了:" + totalTime + " ");if(isDeleteResult) \{

deleteFile(sourceVideoPath);

\}returnpath;

\}else\{return "";

\}/\*\*\* 实际转换视频格式的方法

\*@paramfileRealName 文件名不带扩展名

\*@paramsourceVideoPath 原文件地址

\*@paramtargetExtension 目标视频扩展名

\*@paramisDeleteResult 转换完成后是否删除源文件

\*@return

\*/

private String process(String fileRealName, String sourceVideoPath, String targetExtension, booleanisDeleteResult) \{int type =checkContentType(sourceVideoPath);

String path= "";if (type == 0) \{//如果type为0用ffmpeg直接转换

path =processVideoFormat(sourceVideoPath, fileRealName, targetExtension, isDeleteResult);

\}else if (type == 1) \{//如果type为1，将其他文件先转换为avi，然后在用ffmpeg转换为指定格式

String aviFilePath =processAVI(fileRealName, sourceVideoPath);if (aviFilePath == null) \{//avi文件没有得到

return "";

\}else\{

logger.info("开始转换:");

path=processVideoFormat(aviFilePath, fileRealName, targetExtension, isDeleteResult);if(isDeleteResult) \{

deleteFile(aviFilePath);

\}returnpath;

\}/\*\*\* 检查文件类型

\*@paramsourceVideoPath 原文件地址

\*@return

\*/

private intcheckContentType(String sourceVideoPath) \{

String type= sourceVideoPath.substring(sourceVideoPath.lastIndexOf(".") + 1).toLowerCase();//ffmpeg能解析的格式：(asx，asf，mpg，wmv，3gp，mp4，mov，avi，flv等)

if (type.equals("avi")) \{return 0;

\}else if (type.equals("mpg")) \{return 0;

\}else if (type.equals("wmv")) \{return 0;

\}else if (type.equals("3gp")) \{return 0;

\}else if (type.equals("mov")) \{return 0;

\}else if (type.equals("mp4")) \{return 0;

\}else if (type.equals("asf")) \{return 0;

\}else if (type.equals("asx")) \{return 0;

\}else if (type.equals("flv")) \{return 0;

\}//对ffmpeg无法解析的文件格式(wmv9，rm，rmvb等),//可以先用别的工具(mencoder)转换为avi(ffmpeg能解析的)格式.

else if (type.equals("wmv9")) \{return 1;

\}else if (type.equals("rm")) \{return 1;

\}else if (type.equals("rmvb")) \{return 1;

\}return 9;

\}/\*\*\* 检查文件是否存在

\*@parampath 文件地址

\*@return

\*/

private booleancheckfile(String path) \{

File file= newFile(path);if (!file.isFile()) \{return false;

\}else\{return true;

\}/\*\*\* 对ffmpeg无法解析的文件格式(wmv9，rm，rmvb等), 可以先用别的工具(mencoder)转换为avi(ffmpeg能解析的)格式.

\*@paramfileRealName 文件名不带扩展名

\*@paramsourceVideoPath 原文件地址

\*@return

\*/

privateString processAVI(String fileRealName, String sourceVideoPath) \{/\*\*\* mencoder.exe的地址\*/String menCoderPath=appProperties.getMencoderPath();/\*\*\* 转码后的存放视频地址 avi格式\*/String videoFolder=appProperties.getUploadAndFormatPath();

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

commend.add(menCoderPath);

commend.add(sourceVideoPath);

commend.add("-oac");

commend.add("mp3lame");

commend.add("-lameopts");

commend.add("preset=64");

commend.add("-ovc");

commend.add("xvid");

commend.add("-xvidencopts");

commend.add("bitrate=600");

commend.add("-of");

commend.add("avi");

commend.add("-o");

commend.add(videoFolder+ fileRealName + ".avi");try\{

ProcessBuilder builder= newProcessBuilder();

builder.command(commend);

Process p=builder.start();

doWaitFor(p);return videoFolder + fileRealName + ".avi";

\}catch(Exception e) \{

e.printStackTrace();return null;

\}/\*\*\* 转换为指定格式

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

\*@paramoldFilePath 源文件地址

\*@paramfileRealName 文件名不带扩展名

\*@paramtargetExtension 目标格式扩展名 .xxx

\*@return

\*/

privateString processVideoFormat(String oldFilePath, String fileRealName, String targetExtension, Boolean isDeleteResult) \{/\*\*\* ffmpeg.exe的地址\*/String ffmpegPath=appProperties.getFfmpegPath();/\*\*\* 转码后的存放视频地址 mp4格式\*/String targetFolder=appProperties.getUploadAndFormatPath();if (!checkfile(oldFilePath)) \{

logger.error(oldFilePath+ "文件不存在");return "";

List commend = new ArrayList<>();

commend.add(ffmpegPath);

commend.add("-i");

commend.add(oldFilePath);

commend.add("-vcodec");

commend.add("mpeg4");

commend.add("-q");

commend.add("0");

commend.add("-y");

commend.add(targetFolder+ fileRealName +targetExtension);try\{

ProcessBuilder builder= newProcessBuilder();

builder.command(commend);

Process p=builder.start();

doWaitFor(p);

p.destroy();

String videoPath= targetFolder + fileRealName +targetExtension;

String path= this.processVideoFormatH264(videoPath, ffmpegPath, targetFolder, targetExtension, isDeleteResult);returnpath;

\}catch(Exception e) \{

e.printStackTrace();return "";

\}/\*\*\* 将mpeg4转为h264编码 为了支持播放器

\*@parampath

\*@paramffmpegPath

\*@return

\*/

privateString processVideoFormatH264(String path, String ffmpegPath, String targetFolder, String targetExtension, Boolean isDeleteResult) \{if (!checkfile(path)) \{

logger.error(path+ "文件不存在");return "";

String newFilePath= targetFolder + UUID.randomUUID().toString() +targetExtension;

List commend = new ArrayList<>();

commend.add(ffmpegPath);

commend.add("-i");

commend.add(path);

commend.add("-vcodec");

commend.add("h264");

commend.add("-q");

commend.add("0");

commend.add("-y");

commend.add(newFilePath);try\{

ProcessBuilder builder= newProcessBuilder();

builder.command(commend);

Process p=builder.start();

doWaitFor(p);

p.destroy();if(isDeleteResult) \{

deleteFile(path);

\}returnnewFilePath;

\}catch(Exception e) \{

e.printStackTrace();return "";

\}public intdoWaitFor(Process p) \{

InputStream in= null;

InputStream err= null;int exitValue = -1;try\{

in=p.getInputStream();

err=p.getErrorStream();boolean finished = false;while (!finished) \{try\{while (in.available() > 0) \{

in.read();

\}while (err.available() > 0) \{

err.read();

exitValue=p.exitValue();

finished= true;

\}catch(IllegalThreadStateException e) \{

Thread.sleep(500);

\}catch(Exception e) \{

logger.error("doWaitFor();: unexpected exception - " +e.getMessage());

\}finally\{try\{if (in != null) \{

in.close();

\}catch(IOException e) \{

logger.info(e.getMessage());

\}if (err != null) \{try\{

err.close();

\}catch(IOException e) \{

logger.info(e.getMessage());

\}returnexitValue;

\}/\*\*\* 删除文件方法

\*@paramfilepath\*/

public voiddeleteFile(String filepath) \{

File file= newFile(filepath);if(file.delete()) \{

logger.info("文件" + filepath + "已删除");

\}/\*\*\* 计算转码时间

\*@paramms

\*@return

\*/

public String sumTime(longms) \{int ss = 1000;long mi = ss \* 60;long hh = mi \* 60;long dd = hh \* 24;long day = ms /dd;long hour = (ms - day \* dd) /hh;long minute = (ms - day \* dd - hour \* hh) /mi;long second = (ms - day \* dd - hour \* hh - minute \* mi) /ss;long milliSecond = ms - day \* dd - hour \* hh - minute \* mi -second\*ss;

String strDay= day < 10 ? "0" + day + "天" : "" + day + "天";

String strHour= hour < 10 ? "0" + hour + "小时" : "" + hour + "小时";

String strMinute= minute < 10 ? "0" + minute + "分" : "" + minute + "分";

String strSecond= second < 10 ? "0" + second + "秒" : "" + second + "秒";

String strMilliSecond= milliSecond < 10 ? "0" + milliSecond : ""

\+milliSecond;

strMilliSecond= milliSecond < 100 ? "0" + strMilliSecond + "毫秒" : ""

\+ strMilliSecond + " 毫秒";return strDay + " " + strHour + ":" + strMinute + ":" + strSecond + " "

\+strMilliSecond;