Currently I am building a stream that I am using to stream audio from the App, mediasoup client, to the nodejs API via
Mediasoup server. I am using the audio processing library using Gstreamer and have a problem that I cannot solve: balancing the sound between the phone’s microphone and the mp4 beat when exporting to the app has 2 problems:

• The delay when playing back to the app is 100 milliseconds compared to the actual request of the app which is <=20 milliseconds.
• Sound balance between mp4 music and sound from the phone’s microphone.
  I want to order a rewrite of part 2 above and add audio customization on the Flutter app including customization bars:

• Echo.
  • Sound volume.
  • Music volume
• Reverb:
  • Mix.
  • Room Size.
    *Damp.
• Band Equalizers
• Noise Reduce
  Send to API server for processing through Gstreamser library.
  Can anyone help me?