"NetStream.Codec.Error" record RTMFP

I record RTMFP Stream. Use this code

....

NetGroup ng

.....

application.recordStream[nick + "multicast"] = Stream.get("mp4:multicast-ingest" + nick +"_record" +".mp4");

if ( application.recordStream[nick + "ingest"] != null )

{

          application.recordStream[nick + "ingest"].close();

}

application.recordStream[nick + "ingest"] = ng.getMulticastStreamIngest(nick);

application.recordStream[nick + "multicast"].record("append");

application.recordStream[nick + "multicast"].playFromGroup(application.recordStream[nick + "ingest"]);

Video published in H264 format.

As a result, I get an error : "NetStream.Codec.Error".

As a result, the sound recording was successful.

But in place of the video image I see a black screen

Help me, please/