使用JavaCV获取视频文件时长
编程技术  /  houtizong 发布于 3年前   78
package com.duoduo.javacv.samples;import static com.googlecode.javacv.cpp.opencv_highgui.CV_CAP_PROP_FPS;import static com.googlecode.javacv.cpp.opencv_highgui.CV_CAP_PROP_FRAME_COUNT;import static com.googlecode.javacv.cpp.opencv_highgui.cvCreateFileCapture;import static com.googlecode.javacv.cpp.opencv_highgui.cvGetCaptureProperty;import static com.googlecode.javacv.cpp.opencv_highgui.cvReleaseCapture;import java.io.File;import com.googlecode.javacv.cpp.opencv_highgui.CvCapture;/** * 获取视频时长 * * @author chengesheng * @date 2013-5-22 下午11:15:25 * @note VideoFileLength */public final class VideoFileLength {public static void main(String[] argus) {float len = getVideoFileLength("D:/J2EE/kdvp/webrtc/webapp/images/bike.avi");System.out.println("Video length: " + len + " s");}public static float getVideoFileLength(String fileName) {File file = new File(fileName);if (!file.exists()) {return 0;}float len = 0;CvCapture capture = cvCreateFileCapture(fileName);try {// 获取视频总帧数long frameCount =(long) cvGetCaptureProperty(capture, CV_CAP_PROP_FRAME_COUNT);// 获取视频每秒帧数long fps =(long) cvGetCaptureProperty(capture, CV_CAP_PROP_FPS);len = (float) frameCount / fps;} catch (Exception e) {e.printStackTrace();} finally {cvReleaseCapture(capture);}return len;}}
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