Converting 6 channel audio to 2 channel stereo- Help needed
Reply #2 –
Is there anyway i can re-encode this audio 5.1 and downmix it to 2 channel stereo without dialogues getting suppressed retaining the same video quality of Blueray rip?
Let's assume you have a mkv-file with a H.264 video-stream, 2 DTS audiotracks and it's the 2nd DTS audiotrack you want to downmix to a, let's say, stereo AC3 audio-stream.
You could use eac3to...
eac3to.exe "movie.mkv" 3: "soundtrack.ac3" -downDpl -192
...to create a 192kbps Dolby Pro Logic II AC3-file, which you will have to mux manually afterwards.
You could also use FFmpeg...
ffmpeg.exe -i "movie.mkv" -map 0:0 -map 0:2 -c:v copy -c:a ac3 -ab 192k -ac 2 -af "aresample=matrix_encoding=dplii" "movie(downmix).mkv"
...to do it all at once; downmix (DPLII), encode to 192kbps AC3, mux video and the newly created AC3-stream (without the 1st DTS audio-stream) in a mkv-container.