Audio transcoding

To transcode audio from AC-3 to AAC while keeping the video stream unchanged, you can use the ffmpeg profile

Setup Instructions

Step 1: Adding a profile

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

1. Start adding a new profile.

2. In the profile command input, 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. Start adding a new stream

2. Set the input and output stream variables.

3. Save and start the stream.