Consumers outgoing audio format

Hi community

Please help

Has anyone tried to implement the following audio output?

1. Source (file or stream) 2 audio channels, the output must be a video stream with 2 audio tracks using the same sounds but with different codecs, for example:

-codec:a aac -b:a 192k -filter:a pan=stereo|c0=c0|c1=c1
-codec:a mp2 -b:a 192k -filter:a pan=stereo|c0=c0|c1=c1

In this case, I get one audio track as output in Consumers > FFmpeg multicast

2. Source (file or stream) 4 audio channels, you need to make a video stream at the output with 2 audio tracks with the AAC codec, for example:

-codec:a aac -b:a 192k -filter:a pan=stereo|c0=c0|c1=c1
-codec:a mp2 -b:a 192k -filter:a pan=stereo|c2=c2|c3=c3

In this case, the flow does not work at all in Consumers > FFmpeg

Please tell me which direction to move in and perhaps show me an example of implementation

Thanks