当我使用JavaCV库（FFmpegFrameGrabber + FFmpegFrameRecorde）尝试将dhav码流转为rtsp的时候，出现了以下报错：

Error: [rtsp @ 0000002318df7c30] AAC with no global headers is currently not supported.Exception in thread "pool-1-thread-2" java.lang.RuntimeException: org.bytedeco.javacv.FFmpegFrameRecorder$Exception: avformat_write_header error() error -1094995529: Could not write header to 'rtsp://127.0.0.1:8554/myapp/orange2' (For more details, make sure FFmpegLogCallback.set() has been called.)at org.jfjy.jvc.GetBytes2PipedStreamAndPushRTMP$2.run(GetBytes2PipedStreamAndPushRTMP.java:116)at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: org.bytedeco.javacv.FFmpegFrameRecorder$Exception: avformat_write_header error() error -1094995529: Could not write header to 'rtsp://127.0.0.1:8554/myapp/orange2' (For more details, make sure FFmpegLogCallback.set() has been called.)at org.bytedeco.javacv.FFmpegFrameRecorder.startUnsafe(FFmpegFrameRecorder.java:969)at org.bytedeco.javacv.FFmpegFrameRecorder.start(FFmpegFrameRecorder.java:437)at org.bytedeco.javacv.FFmpegFrameRecorder.start(FFmpegFrameRecorder.java:432)at org.jfjy.jvc.GetBytes2PipedStreamAndPushRTMP.grabAndPush(GetBytes2PipedStreamAndPushRTMP.java:215)at org.jfjy.jvc.GetBytes2PipedStreamAndPushRTMP$2.run(GetBytes2PipedStreamAndPushRTMP.java:100)... 3 more

意思就是缺少全局头部信息的AAC编码器不被支持，那么給它添加一些配置信息即可。

//我在这个的基础上recorder.setAudioCodec(AV_CODEC_ID_AAC);

//添加了这行配置就好了recorder.setAudioBitrate(grabber.getAudioBitrate());