Verify your operating system's audio settings to ensure everything is connected and working properly.

Make sure the correct audio sources are selected and added to your encoder.

Confirm that the audio sources are enabled and not muted.

Many encoders, like OBS, have an animated audio meter indicating whether any sound is being picked up and produced by your audio sources.

If your encoder supports multiple channel outputs, make sure your audio devices are enabled for the tracks you're using for your stream.

Try streaming and recording locally with your equipment.

If the local recording does not have audio, your audio sources (e.g., microphone or mixer) may not be set up correctly or may be malfunctioning.

If your stream has no audio but the local recording does, double-check the type of content you're streaming. Some platforms may mute your stream if they detect copyright issues, like broadcasting music you don't own.