使用FFmpeg从RSTP流中抓图花屏问题
目录
使用FFmpeg从RSTP流中抓图花屏问题
场景:随着设备的数量的增加,视频流的质量逐渐降低,掉帧非常严重。在使用FFmpeg抓图花屏率也越来越高,经过网上查阅资料,基本上都是修改FFmpeg框架底层源码之类的。翻阅国外资料后,可以通过设置参数来过滤坏掉的帧
grabber.setVideoOption("skip_frame", "nokey");
使用FFmpeg
<dependency>
<groupId>org.bytedeco</groupId>
<artifactId>ffmpeg-platform</artifactId>
<version>6.0-1.5.9</version>
<exclusions>
<exclusion>
<artifactId>javacpp</artifactId>
<groupId>org.bytedeco</groupId>
</exclusion>
<exclusion>
<artifactId>javacpp-platform</artifactId>
<groupId>org.bytedeco</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.bytedeco</groupId>
<artifactId>javacv-platform</artifactId>
<version>1.5.9</version>
</dependency>
抓图工具类
public class VideoUtils {
private static final Logger log = LoggerFactory.getLogger(VideoUtils.class);
private static String rtspTransportType = "tcp";
/**
* * 视频帧率
*
*/
private static int frameRate = 144;
/**
* 视频宽度
*/
private static int frameWidth = 1920;
/**
* 视频高度
*/
private static int frameHeight = 1080;
/**
* 解析视频地址并截图
* @param path rstp 流地址
* @param picPath 图片存放地址
* @throws Exception
*/
public static void getVideoImagePathByRSTP(String path, String picPath) throws Exception {
//创建rstp流对象
FFmpegFrameGrabber grabber = createGrabber(path);
try {
//开启流获取
grabber.start();
Frame frame = null;
while ((frame = grabber.grabFrame()) == null){
frame = grabber.grabFrame();
}
//转换图像
Java2DFrameConverter converter = new Java2DFrameConverter();
BufferedImage srcImage = converter.getBufferedImage(frame);
if (srcImage!=null) {
//创建文件
File file = new File(picPath);
//输出文件
ImageIO.write(srcImage, "jpg", file);
}
}catch (Exception e){
e.printStackTrace();
}finally {
grabber.stop();
grabber.close();
}
}
/**
* 构造视频抓取器
*
* @param rtsp 拉流地址
* @return
*/
private static FFmpegFrameGrabber createGrabber(String rtsp) {
// 获取视频源
try {
FFmpegFrameGrabber grabber = FFmpegFrameGrabber.createDefault(rtsp);
//设置传输方式 TCP | UDP
grabber.setOption("rtsp_transport", rtspTransportType);
//设置帧率
grabber.setFrameRate(frameRate);
grabber.setOption("stimeout", "2000000000");
// 设置缓冲区大小为1MB
grabber.setOption("buffer_size", "1024000");
// 过滤坏掉的帧
grabber.setVideoOption("skip_frame", "nokey");
//设置获取的视频宽度
grabber.setImageWidth(frameWidth);
// //设置获取的视频高度
grabber.setImageHeight(frameHeight);
// 设置采集器构造超时时间(单位微秒,1秒=1000000微秒)
// grabber.setOption("stimeout", "2000000000");
//设置视频bit率
// grabber.setVideoBitrate(2000000);
return grabber;
} catch (FrameGrabber.Exception e) {
log.error("创建解析rtsp FFmpegFrameGrabber 失败");
log.error("create rtsp FFmpegFrameGrabber exception: ", e);
return null;
}
}
public static void main(String[] args) throws IOException {
String rstp = "rtsp://10.15.10.94:5554/RealTime/100001013/1/mainstream";
try {
//参数1 rtsp 地址自行获取 参数2 截取图片存放地址
VideoUtils.getVideoImagePathByRSTP(rstp, "/Users/wuhuaming/springboot/MyPractices/springboot-test/src/main/resources/static/1000.jpg");
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
}