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JavaCV异常汇总 JavaCV异常汇总

问题描述

在使用javaCV推拉流时，出现如下报错：

org.bytedeco.javacv.FrameRecorder$Exception: avformat_write_header error() error -40: Could not write header to 'null'
	at org.bytedeco.javacv.FFmpegFrameRecorder.startUnsafe(FFmpegFrameRecorder.java:952)
	at org.bytedeco.javacv.FFmpegFrameRecorder.start(FFmpegFrameRecorder.java:431)
	at org.bytedeco.javacv.FFmpegFrameRecorder.start(FFmpegFrameRecorder.java:426)
	at com.banmajio.push.RtmpPush.push(RtmpPush.java:138)
	at com.banmajio.push.RealPlay.play(RealPlay.java:59)
	at com.banmajio.controller.HcSDKController.openstream(HcSDKController.java:44)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190)
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793)
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:748)

解决思路

首先确保视频时h264编码的，javacv貌似不支持h265编码的视频数据。
检验方式：

在FFmpegFrameGrabber.start()之前设置FFmpeg日志级别

			avutil.av_log_set_level(avutil.AV_LOG_ERROR);
			FFmpegLogCallback.set();

其中AV_LOG_ERROR可以根据需要设置DEBUG,INFO日志级别获取更详细的信息。

观察控制台打印信息确认视频编码格式

Debug: [mpeg @ 0000000026017a40] After avformat_find_stream_info() pos: 2730320 bytes read:2731008 seeks:0 frames:2

Info: Input #0, mpeg, from 'java.io.BufferedInputStream@259bb828':

Info:   Duration: 
Info: N/A
Info: , start: 
Info: 7943.742044
Info: , bitrate: 
Info: 64 kb/s
Info: 

Info:     Stream #0:0
Info: [0x1e0]
Debug: , 1, 1/90000
Info: : Video: hevc (Main), 1 reference frame, yuvj420p(pc, bt709), 1920x1080, 0/1
Info: , 
Info: 90k tbr, 
Info: 90k tbn
Info: 

Info:     Stream #0:1
Info: [0x1c0]
Debug: , 1, 1/90000
Info: : Audio: pcm_alaw, 8000 Hz, mono, s16, 64 kb/s
Info: 

如上所示，Input为avformat_find_stream_info()函数探测出来的流信息。Info: : Video: hevc (Main), 1 reference frame, yuvj420p(pc, bt709), 1920x1080, 0/1 hevc(Main)说明该视频流为h265编码。故而报错。

解决方法

如果是本地视频文件，请更换h264编码的视频。
如果是海康设备，请在nvr中更改视频编码为h264