Audio transcoding

To transcode audio from AC-3 to AAC while keeping the video stream unchanged, you can use the ffmpeg profile “Transcode audio to AAC”:
https://github.com/cesbo/senta-streamer-profiles/blob/master/profiles/audio-to-acc.profile

Setup Instructions

First, you need to add a profile for audio transcoding.

1. Go to the Profiles tab.
2. Click Add Profile.
3. In the window that appears, paste the following command and save:

ffmpeg -re -i ${i} \
  -c:v copy \
  -map 0:a -c:a aac -b:a 128k \
  -f mpegts ${o}

Where:

• ${i} - input stream/file
• ${o} - output stream/file
• -c:v copy - copy video without re-encoding
• -map 0:a - map all audio tracks
• -c:a aac - transcode audio to AAC codec
• -b:a 128k - set audio bitrate to 128 kbps

Step 2: Assign Profile to Stream

1. Go to the Streams section.
2. Click the Add Stream button.
3. Set the input and output stream variables.
4. Save and start the stream.