在此基础上增加水印换行
时间: 2024-04-22 17:24:31 浏览: 115
要在之前的示例中添加水印的换行功能,您可以使用OpenCV的cvPutText函数来控制水印文本的换行。以下是修改后的示例代码:
```java
import org.bytedeco.javacv.*;
import org.bytedeco.opencv.opencv_core.*;
import org.bytedeco.opencv.opencv_imgproc.*;
public class AddWatermarkToVideo {
public static void main(String[] args) {
String videoPath = "path/to/video.mp4";
String outputPath = "path/to/output.mp4";
String watermarkText = "Your Watermark Text";
FrameGrabber grabber = new FFmpegFrameGrabber(videoPath);
FrameRecorder recorder = new FFmpegFrameRecorder(outputPath, grabber.getAudioChannels());
try {
grabber.start();
recorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);
recorder.setFormat("mp4");
recorder.setFrameRate(grabber.getFrameRate());
recorder.setVideoBitrate((int) grabber.getVideoBitrate());
recorder.start();
OpenCVFrameConverter.ToIplImage converter = new OpenCVFrameConverter.ToIplImage();
Frame frame;
while ((frame = grabber.grab()) != null) {
IplImage image = converter.convert(frame.clone());
addWatermark(image, watermarkText);
recorder.record(converter.convert(image));
}
recorder.stop();
grabber.stop();
} catch (FrameGrabber.Exception | FrameRecorder.Exception e) {
e.printStackTrace();
}
}
private static void addWatermark(IplImage image, String text) {
CvFont font = new CvFont();
cvInitFont(font, CV_FONT_HERSHEY_SIMPLEX, 1.0, 1.0, 0, 2, CV_AA);
CvPoint position = new CvPoint(20, 40);
CvScalar color = CV_RGB(255, 255, 255);
// 水印换行
String[] lines = text.split("\n");
int lineHeight = 30;
for (int i = 0; i < lines.length; i++) {
int yOffset = lineHeight * (i + 1);
cvPutText(image, lines[i], cvPoint(position.x(), position.y() + yOffset), font, color);
}
}
}
```
在这个修改后的示例中,我假设水印文本中使用换行符来标记每行的换行。通过使用String的split方法,将文本分割为多行,并使用cvPoint函数来计算每行水印文本的位置。然后使用cvPutText函数将每行文本添加到图像中。
希望这次的修改能满足您的需求!
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