Video4j是org.openpnp:opencv上面的一个高级库,它提供了在Java中处理视频媒体的API。
可以在 java 中进行视频处理。这些库在使用 JNI 的引擎盖下使用 openpnp opencv。
特点:帧流、通过 jdlib 进行视频人脸检测和特征提取、缩略图生成、视频指纹识别。
<dependency> <groupId>io.metaloom.video</groupId> <artifactId>video4j</artifactId> <version>1.2.0</version> </dependency>
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代码:
// Load native lib libopencv_java451 Video4j.init();
// Open the video try (Video video = Videos.open(BIG_BUCK_BUNNY2_PATH)) { // Video dimensions video.width(); video.height();
// Configured FPS video.fps();
// Total frames of the video video.length();
// Seek to specific frame video.seekToFrame(1020);
// Or just to the 50% point of the video video.seekToFrameRatio(0.5d);
// Return the number of the current frame video.currentFrame();
// Read the next frame as matrice (lower level access) Mat mat = video.frameToMat();
// Read the next frame as image (mat gets automatically converted to image) BufferedImage image = video.frameToImage();
// Read the frame and resize it to a width of 256 pixel. BufferedImage image2 = video.boxedFrameToImage(256);
// Display the frame in a window ImageUtils.show(image); }
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