Handbrake is a popular open-source transcoder that works on Windows, Mac, and Linux. It is highly effective for converting DTS to AC3 or AAC.
"Copy" mode for video allows you to change only the audio track, making the process incredibly fast. 2. Handbrake (User-Friendly & Multi-Platform)
Simply go to Media > Convert / Save , add your file, and choose a profile with your desired audio settings. 4. FFmpeg (For Advanced Users)
To convert a DTS track to a 640kbps AC3 track within an MKV file, you might use: ffmpeg -i input.mkv -map 0:v -map 0:a -c:v copy -c:a ac3 -b:a 640k output.mkv