java 实现视频转换通用工具类:获取视频元数据信息(一)
java 实现视频转换通用工具类:视频相互转换-Ffmpeg(三)
1.ffmpeg 截图,自定义命令行
- /**
- * ffmpeg 截图,自定义命令行
- * @param srcVideoPath 源文件
- * @param shellLine 自定义shell命令行
- * @param tarImagePath 目标文件
- * @return
- */
- public static boolean processFfmpegImage(String srcVideoPath,String shellLine,String tarImagePath) {
- if (!checkfile(srcVideoPath)) {
- logger.error("【" + srcVideoPath + "】 不存在 !");
- return false;
- }
- List<String> commend = new java.util.ArrayList<String>();
- commend.add(ffmpegPath);
- commend.add("-i");
- commend.add(srcVideoPath);
- commend.add(shellLine);
- commend.add(tarImagePath);
- try {
- ProcessBuilder builder = new ProcessBuilder();
- builder.command(commend);
- Process process = builder.start();
- InputStream is = process.getErrorStream();
- InputStreamReader inputStreamReader = new InputStreamReader(is);
- BufferedReader inputBufferedReader = new BufferedReader(
- inputStreamReader);
- String line = null;
- StringBuilder stringBuilder = new StringBuilder();
- while ((line = inputBufferedReader.readLine()) != null) {
- stringBuilder.append(line);
- }
- inputBufferedReader.close();
- inputBufferedReader = null;
- inputStreamReader.close();
- inputStreamReader = null;
- is.close();
- is = null;
- if (!checkfile(tarImagePath)) {
- logger.info(tarImagePath + " is not exit! processFfmpegImage 转换不成功 !");
- return false;
- }
- return true;
- } catch (Exception e) {
- logger.error("【" + srcVideoPath + "】 processFfmpegImage 转换不成功 !");
- return false;
- }
- }
2.ffmpeg 截图,并指定图片的大小
- /**
- * ffmpeg 截图,并指定图片的大小
- * @param srcVideoPath
- * @param tarImagePath 截取后图片路径
- * @param width 截图的宽
- * @param hight 截图的高
- * @param offsetValue 表示相对于文件开始处的时间偏移值 可以是分秒
- * @param vframes 表示截图的桢数
- *
- * @return
- */
- public static boolean processFfmpegImage(String srcVideoPath,String tarImagePath,int width,int hight,float offsetValue,float vframes) {
- if (!checkfile(srcVideoPath)) {
- logger.error("【" + srcVideoPath + "】 不存在 !");
- return false;
- }
- List<String> commend = new java.util.ArrayList<String>();
- commend.add(ffmpegPath);
- commend.add("-i");
- commend.add(srcVideoPath);
- commend.add("-y");
- commend.add("-f");
- commend.add("image2");
- commend.add("-ss");
- commend.add(offsetValue+""); //在视频的某个插入时间截图,例子为5秒后
- commend.add("-vframes");
- commend.add(vframes + ""); //截图的桢数
- commend.add("-s");
- commend.add(width + "x" +hight); //截图的的大小
- commend.add(tarImagePath);
- try {
- ProcessBuilder builder = new ProcessBuilder();
- builder.command(commend);
- Process process = builder.start();
- doWaitFor(process);
- process.destroy();
- if (!checkfile(tarImagePath)) {
- logger.info(tarImagePath + " is not exit! processFfmpegImage 转换不成功 !");
- return false;
- }
- return true;
- } catch (Exception e) {
- logger.error("【" + srcVideoPath + "】 processFfmpegImage 转换不成功 !");
- return false;
- }
- }